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Cheap flights from London Heathrow Airport to Seattle from £274

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LHR — SEA
15 May — 22 May1
1 adult
Wed 15/5
Wed 22/5

The best prices from London Heathrow to Seattle/Tacoma Intl are usually found in November or February, booked 65 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 May 2024.

Popular in

July

Cheapest in

November

Round-trip from

£475

One-way from

£327
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 16% potential price drop
Search Deals
From London Heathrow to Seattle/Tacoma Intl
Search Deals
One-way flight from London Heathrow to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from London Heathrow Airport to Seattle?

Users have found that flying from London Heathrow Airport to Seattle on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from London Heathrow Airport to Seattle?

Find a great deal and save up to 35% by booking at least 44 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London Heathrow Airport to Seattle within the next two weeks, with the cheapest ticket starting at £539.

What is the cheapest month to fly from London Heathrow Airport to Seattle?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to Seattle. Flights to Seattle from London Heathrow Airport in November are about £555 on average during November, but can be found for as low as £306.

When is the cheapest time to fly from London Heathrow Airport to Seattle (LHR - SEA)?

It’s typically best to fly out from London Heathrow Airport to Seattle in the evening. Doing so could potentially save you 7% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Air Canada flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Air Canada for the route between Heathrow and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
Take a peek at the cheapest Air Canada flights we've detected travelling from London to Seattle. Make sure to check back often as deals are often changing.
Tue 5/1114:30LHR - SEA
1 stop11h 56mAir Canada
Mon 11/1115:20SEA - LHR
1 stop12h 30mAir Canada
Deal found 9/5£461
Tue 29/1014:30LHR - SEA
1 stop14h 26mAir Canada
Mon 11/1105:50SEA - LHR
2 stops17h 20mAir Canada
Deal found 9/5£492
Wed 15/509:30LHR - SEA
1 stop20h 01mAir Canada
Wed 22/515:10SEA - LHR
1 stop12h 40mAir Canada
Deal found 8/5£494
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£498
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/510:40SEA - LHR
2 stops17h 10mAir Canada
Deal found 7/5£503
Fri 1/1114:30LHR - SEA
1 stop14h 26mAir Canada
Sun 10/1119:05SEA - LHR
1 stop32h 45mAir Canada
Deal found 9/5£512
Thu 31/1008:50LHR - SEA
2 stops19h 24mAir Canada
Mon 11/1105:50SEA - LHR
2 stops17h 20mAir Canada
Deal found 9/5£513
Thu 16/514:05LHR - SEA
1 stop15h 26mAir Canada
Tue 21/507:40SEA - LHR
1 stop18h 20mAir Canada
Deal found 9/5£522
Thu 16/514:05LHR - SEA
1 stop15h 26mAir Canada
Wed 29/510:40SEA - LHR
2 stops15h 20mAir Canada
Deal found 9/5£554

  • Air Canada is one of the most popular airlines used for those travelling from London Heathrow Airport to Seattle. Flights from Air Canada travelling this route typically cost £712.13 RT. This price is typically 65% more expensive than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £323. The most popular departure airport in London Heathrow Airport when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London Heathrow Airport to Seattle, Air Canada flights are 7% more popular than any other airline flying that same route.

Cheap American Airlines flights from Heathrow to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Heathrow and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
To aid your search, here are some of the cheapest American Airlines flights we've found from London to Seattle. Deals frequently update to provide users with more options.
Wed 15/509:15LHR - SEA
1 stop20h 41mAmerican Airlines
Tue 21/501:15SEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 8/5£522
Tue 14/510:30LHR - SEA
2 stops18h 01mAmerican Airlines
Tue 21/506:00SEA - LHR
2 stops17h 40mAmerican Airlines
Deal found 7/5£526
Tue 14/509:50LHR - SEA
Nonstop9h 45mAmerican Airlines
Tue 21/519:40SEA - LHR
Nonstop9h 20mAmerican Airlines
Deal found 7/5£538
Thu 16/509:45LHR - SEA
1 stop20h 05mAmerican Airlines
Sun 19/523:59SEA - LHR
1 stop14h 11mAmerican Airlines
Deal found 8/5£540
Fri 17/508:10LHR - SEA
2 stops16h 41mAmerican Airlines
Tue 21/501:15SEA - LHR
1 stop29h 10mAmerican Airlines
Deal found 9/5£543
Thu 16/510:30LHR - SEA
2 stops17h 59mAmerican Airlines
Sun 19/523:59SEA - LHR
1 stop14h 11mAmerican Airlines
Deal found 8/5£545
Wed 5/612:15LHR - SEA
1 stop16h 25mAmerican Airlines
Wed 19/613:25SEA - LHR
1 stop14h 50mAmerican Airlines
Deal found 9/5£567
Tue 4/613:05LHR - SEA
1 stop15h 59mAmerican Airlines
Wed 19/622:52SEA - LHR
1 stop15h 18mAmerican Airlines
Deal found 9/5£580
Sat 18/509:50LHR - SEA
Nonstop9h 45mAmerican Airlines
Fri 24/523:59SEA - LHR
1 stop14h 11mAmerican Airlines
Deal found 8/5£631

  • One of the most popular airlines travelling from London Heathrow Airport to Seattle is American Airlines. Flights from American Airlines travelling this route typically cost £780.47 RT. This price is typically 67% cheaper than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £560. The most popular departure airport in London Heathrow Airport when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London Heathrow Airport to Seattle, American Airlines flights are 4% more popular than any other airline flying that same route.

Cheap Heathrow to Seattle flights in May & June 2024

Find cheap flight options from Heathrow to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 876,925 searches. Prices were last updated on 10 May 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Sat 25/516:15LHR - SEA
1 stop26h 25mLufthansa
Mon 27/507:00SEA - LHR
1 stop14h 55mLufthansa
Deal found 9/5£477
Mon 3/613:05LHR - SEA
1 stop15h 30mIcelandair
Mon 17/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 9/5£492
Sat 25/516:15LHR - SEA
1 stop26h 25mUnited Airlines
Mon 27/507:40SEA - LHR
1 stop14h 50mUnited Airlines
Deal found 9/5£494
Mon 17/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 1/723:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 8/5£495
Mon 10/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 17/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 8/5£498
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£498
Tue 28/521:25LHR - SEA
1 stop28h 15mIcelandair
Tue 4/615:50SEA - LHR
1 stop20h 30mIcelandair
Deal found 7/5£499
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/510:40SEA - LHR
2 stops17h 10mAir Canada
Deal found 7/5£503
Tue 4/621:25LHR - SEA
1 stop28h 15mIcelandair
Tue 11/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 7/5£504

Heathrow to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Heathrow and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Tue 5/1106:20LHR - SEA
1 stop14h 00mVirgin Atlantic
Mon 11/1118:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 9/5£447
Tue 5/1111:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 11/1115:20SEA - LHR
Nonstop9h 25mVirgin Atlantic
Deal found 9/5£449
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/922:55SEA - LHR
1 stop13h 15mVirgin Atlantic
Deal found 9/5£454
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 9/5£457
Tue 5/1114:30LHR - SEA
1 stop11h 56mAir Canada
Mon 11/1115:20SEA - LHR
1 stop12h 30mAir Canada
Deal found 9/5£461
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/907:20SEA - LHR
1 stop15h 45mVirgin Atlantic
Deal found 9/5£464
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 9/5£466
Mon 16/913:05LHR - SEA
1 stop15h 30mIcelandair
Mon 23/915:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 9/5£474
Mon 16/909:30LHR - SEA
2 stops16h 56mMultiple Airlines
Mon 23/907:40SEA - LHR
1 stop18h 20mMultiple Airlines
Deal found 9/5£477

Direct flights to Seattle from Heathrow

Discover direct flight options from Heathrow to Seattle. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
Consider booking one of these non-stop flights heading from London to Seattle. If you're looking for other options for flights from London to Seattle, make sure to update the search form at the top of page.
Tue 5/1111:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 11/1115:20SEA - LHR
Nonstop9h 25mVirgin Atlantic
Deal found 9/5£449
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 9/5£457
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 9/5£466
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 8/5£482
Tue 29/1014:50LHR - SEA
Nonstop9h 55mBritish Airways
Tue 12/1118:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 9/5£497
Mon 16/916:50LHR - SEA
Nonstop10h 30mKLM
Mon 23/921:15SEA - LHR
Nonstop9h 35mKLM
Deal found 9/5£506
Thu 26/916:00LHR - SEA
Nonstop9h 45mBritish Airways
Wed 2/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5£507
Wed 30/1014:50LHR - SEA
Nonstop9h 55mIberia
Wed 13/1118:45SEA - LHR
Nonstop9h 20mIberia
Deal found 9/5£509
Thu 31/1014:50LHR - SEA
Nonstop9h 55mBritish Airways
Thu 7/1118:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 9/5£526

Heathrow to Seattle flights leaving soon

Find last-minute flight options from Heathrow to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
Have a look at some of the flights available from London to Seattle departing last-minute. Users should examine the flight details to ensure there are no surprises.
Wed 15/509:30LHR - SEA
1 stop20h 01mAir Canada
Wed 22/515:10SEA - LHR
1 stop12h 40mAir Canada
Deal found 8/5£494
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£498
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/510:40SEA - LHR
2 stops17h 10mAir Canada
Deal found 7/5£503
Tue 14/516:55LHR - SEA
1 stop37h 56mFinnair
Sun 19/513:22SEA - LHR
1 stop24h 48mFinnair
Deal found 9/5£507
Wed 15/511:15LHR - SEA
1 stop19h 36mFinnair
Sun 19/513:22SEA - LHR
1 stop24h 48mFinnair
Deal found 9/5£508
Wed 15/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Wed 22/513:22SEA - LHR
1 stop13h 53mBritish Airways
Deal found 8/5£509
Tue 14/516:55LHR - SEA
1 stop37h 56mFinnair
Sun 19/513:22SEA - LHR
1 stop24h 48mFinnair
Deal found 8/5£510
Fri 17/514:05LHR - SEA
1 stop15h 11mAir Canada
Wed 22/511:40SEA - LHR
1 stop12h 55mAir Canada
Deal found 9/5£513
Wed 15/510:30LHR - SEA
2 stops19h 01mMultiple Airlines
Wed 22/510:40SEA - LHR
2 stops17h 10mMultiple Airlines
Deal found 8/5£515

One-way flights to Seattle from Heathrow

Search for one-way flight options from Heathrow to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
If you're seeking multiple options on one-way flights from London to Seattle, be sure to check out these deals, which are updated often. Those needing a return flight from London to Seattle can use the search form above.
Fri 31/507:45LHR - SEA
3 stops33h 00mMultiple Airlines
Deal found 9/5£274
Sun 19/507:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 9/5£279
Fri 17/521:25LHR - SEA
2 stops30h 55mMultiple Airlines
Deal found 9/5£285
Mon 16/920:50LHR - SEA
2 stops43h 25mMultiple Airlines
Deal found 9/5£296
Sun 2/607:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 9/5£316
Sun 19/514:35LHR - SEA
3 stops30h 21mMultiple Airlines
Deal found 9/5£323
Wed 29/521:25LHR - SEA
2 stops30h 55mMultiple Airlines
Deal found 9/5£325
Fri 17/514:10LHR - SEA
1 stop30h 46mWestJet
Deal found 9/5£327
Wed 19/621:25LHR - SEA
2 stops30h 56mMultiple Airlines
Deal found 9/5£333

Find flights from Heathrow to Seattle within your budget

Customise your flight search to find flights from Heathrow to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£447 - £495

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 5/11

1 stop14h 00m

Seattle/Tacoma Intl

Mon 11/11

Nonstop9h 35m

£447

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 5/11

1 stop11h 56m

Seattle/Tacoma Intl

Mon 11/11

1 stop12h 30m

£461

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

1 stop15h 30m

Seattle/Tacoma Intl

Mon 23/9

1 stop12h 05m

£474

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

2 stops16h 56m

Seattle/Tacoma Intl

Mon 23/9

1 stop18h 20m

£477

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 29/10

1 stop13h 55m

Seattle/Tacoma Intl

Tue 12/11

1 stop12h 30m

£484

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 4/11

2 stops31h 34m

Seattle/Tacoma Intl

Tue 12/11

1 stop20h 44m

£487

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 23/9

1 stop20h 33m

£488

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 25/5

1 stop26h 25m

Seattle/Tacoma Intl

Mon 27/5

1 stop14h 50m

£494

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 4/11

1 stop14h 00m

Seattle/Tacoma Intl

Tue 12/11

Nonstop9h 25m

£495

Flights are sorted by cheapest first

Deals found on 9/5

When is the best time to book a flight from London Heathrow Airport to Seattle?

Use this chart to determine the optimal time to book a return flight from Heathrow to Seattle. Price data was last updated on 3 May 2024.
The best time to book flights from London Heathrow Airport to Seattle is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly from London Heathrow Airport to Seattle?

Use this chart to determine the cheapest time to fly return from Heathrow to Seattle. Price data was last updated on 5 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London Heathrow Airport to Seattle flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Seattle by month

Plan your trip from Heathrow to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Heathrow to Seattle is currently £306 while a return flight costs £479. Price data was last updated on 5 May 2024.

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of £594). Flying from London Heathrow Airport to Seattle in July is currently the most expensive (average of £800). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

£489

February

£475

March

£506

April

£521

May

£546

June

£613

July

£640

August

£611

September

£549

October

£525

November

£479

December

£475

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

5 - 19 °C

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 10 May 2024.
Get a feel of what it's like to fly with Air Canada, American Airlines and United Airlines from London to Seattle by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very Good
10,768 reviews
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,590 reviews
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

SWISS
7.8
Good
2,008 reviews
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Finnair
7.8
Good
1,378 reviews
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Austrian Airlines
7.7
Good
1,062 reviews
Delta
8.0
Very Good
10,768 reviews
Check prices

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London Heathrow?

    If you book a flight to Seattle from London Heathrow, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 21 flights from London Heathrow to Seattle/Tacoma Intl per day from 14 different airlines.

  • Can I find flights from London Heathrow Airport to Seattle for under £500 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under £500. The cheapest flight booked recently is on Virgin Atlantic for just £447, but on average you can expect to pay £474.

  • Are there nonstop flights from London Heathrow Airport to Seattle for under £500 on Cheapflights?

    Cheapflights has at least 20 direct flights from London Heathrow Airport to Seattle under £500. A good price for a nonstop flight from London Heathrow Airport to Seattle is less than £518.

  • Are there last-minute flights available from London Heathrow Airport to Seattle for under £500?

    There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than £500.

  • What days are direct flights available from London Heathrow Airport to Seattle?

    Direct flights can be found on the following days: Tuesday.

  • How many flights depart from London Heathrow Airport to Seattle on average per day?

    On average, you can expect to see 3 flights from London Heathrow Airport to Seattle a day.
    Afternoon (Midday - 6pm) - 100% of flight departures

  • How long is the flight from London Heathrow Airport to Seattle?

    Departing from London Heathrow Airport to Seattle will take you 11h 56m. The distance from London Heathrow Airport to Seattle is about 4812 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Seattle round-trip?

    According to our current data, Virgin Atlantic (£447), Air Canada (£461), and Icelandair (£474) offers the cheapest pricing from London Heathrow Airport to Seattle. Virgin Atlantic is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular airlines that fly from London Heathrow Airport to Seattle?

    When booking a flight from London Heathrow Airport to Seattle, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

  • What are the most reliable airlines from London Heathrow Airport to Seattle?

    Consider Air France (77%), Delta (77%) or Virgin Atlantic (77%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Seattle.

  • What are the cheapest flights from London Heathrow Airport to Seattle?

    The cheapest flight price from London Heathrow Airport to Seattle is £509. On average you can expect to pay £2,161. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for £447.

  • What does LHR to SEA mean?

    This is defined as London Heathrow Airport (LHR) and Seattle/Tacoma Intl Airport (SEA). Codes like Seattle/Tacoma Intl Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Heathrow to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Heathrow to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Heathrow to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Heathrow to Seattle that include hotel bookings?

    Yes. In addition to deals on Heathrow to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Seattle.

  • Can I find deals for business class flights from Heathrow to Seattle?

    Yes. Cheapflights offers flight deals from Heathrow to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Heathrow to Seattle that allow pets onboard?

    Many airlines flying from Heathrow to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Heathrow to Seattle?

    Yes, you can often find last-minute deals on Heathrow to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London Heathrow Airport to Seattle flight deals updated?

    The London Heathrow Airport to Seattle flight deals you see on this page were last updated on 9/5.

See more FAQs

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Fly from Heathrow to Seattle on these airlines
Choose from the following airlines for your flight from Heathrow to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 10 May 2024.

Virgin Atlantic flights from London Heathrow to Seattle/Tacoma Intl
British Airways flights from London Heathrow to Seattle/Tacoma Intl
Finnair flights from London Heathrow to Seattle/Tacoma Intl

Top 10 airlines flying from Heathrow to Seattle

Discover the top 10 airlines that operate flights from Heathrow to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 876,925 searches. Data last updated 10 May 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£258Average£570FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Virgin AtlanticCheapest£394Average£575FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£421Average£570FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£423Average£570FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£433Average£511FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£436Average£587FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£443Average£581FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£448Average£624FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£449Average£515FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£451Average£602FlexibilityNo cancel feeOn-time76%
Search Finnair flights
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Search flights from Heathrow to Seattle by cabin class

Find flights from Heathrow to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Heathrow to Seattle

Find hourly flight availability from Heathrow to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
52%of flight departuresMorning6 am to noon
47%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Heathrow to Seattle

Explore weekly flight availability from Heathrow to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 May 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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How does Cheapflights help users find flights from Heathrow to Seattle?

Deals for Heathrow to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Seattle?

Cheapflights helps you find that perfect flight to Seattle from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Seattle become cheaper?

Yes! Start tracking prices for Heathrow to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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