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Cheap flights from London Heathrow Airport to Seattle from £268

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 30/5. 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
13 May — 20 May1
1 adult
Mon 13/5
Mon 20/5

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 8 May 2024.

Popular in

July

Cheapest in

November

Round-trip from

£475

One-way from

£388
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 £540.

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 £556 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 KLM flights from Heathrow to Seattle

Explore cheap flight options specifically provided by KLM 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 881,145 searches. Data last updated 8 May 2024.
Take a peek at the cheapest KLM flights we've detected travelling from London to Seattle. Make sure to check back often as deals are often changing.
Mon 16/916:50LHR - SEA
Nonstop10h 30mKLM
Mon 23/909:53SEA - LHR
1 stop12h 52mKLM
Deal found 7/5£492
Tue 14/509:55LHR - SEA
1 stop14h 45mKLM
Wed 22/513:30SEA - LHR
1 stop12h 30mKLM
Deal found 7/5£498
Tue 14/511:45LHR - SEA
1 stop12h 55mKLM
Wed 22/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 7/5£500
Tue 14/516:50LHR - SEA
Nonstop10h 30mKLM
Wed 22/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 7/5£508
Thu 16/516:50LHR - SEA
Nonstop10h 30mKLM
Sun 19/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 8/5£571
Wed 29/511:45LHR - SEA
1 stop12h 55mKLM
Wed 5/621:10SEA - LHR
Nonstop9h 40mKLM
Deal found 8/5£572
Thu 16/516:50LHR - SEA
Nonstop10h 30mKLM
Wed 29/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 8/5£574
Tue 25/616:50LHR - SEA
Nonstop10h 20mKLM
Tue 9/713:30SEA - LHR
1 stop12h 30mKLM
Deal found 8/5£586
Mon 24/616:50LHR - SEA
Nonstop10h 20mKLM
Mon 15/721:15SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5£594

  • One of the most popular airlines travelling from London Heathrow Airport to Seattle is KLM. Flights on this route from KLM typically cost £712.13 RT, a price that is 69% cheaper than the average London Heathrow Airport to Seattle flight. The cheapest flight found was £323 RT. 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, KLM flights are 7% more popular than any other airline flying that same route.

Cheap Iberia flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Iberia 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 881,145 searches. Data last updated 8 May 2024.
To aid your search, here are some of the cheapest Iberia flights we've found from London to Seattle. Deals frequently update to provide users with more options.
Thu 12/916:00LHR - SEA
Nonstop9h 45mIberia
Tue 24/906:36SEA - LHR
2 stops19h 14mIberia
Deal found 8/5£494
Tue 14/509:50LHR - SEA
Nonstop9h 45mIberia
Sun 19/513:40SEA - LHR
Nonstop9h 20mIberia
Deal found 7/5£542
Tue 11/609:50LHR - SEA
Nonstop9h 45mIberia
Tue 9/710:02SEA - LHR
1 stop13h 58mIberia
Deal found 8/5£580
Tue 11/609:50LHR - SEA
Nonstop9h 45mIberia
Fri 12/713:40SEA - LHR
1 stop15h 05mIberia
Deal found 8/5£612
Sat 18/509:50LHR - SEA
Nonstop9h 45mIberia
Fri 24/513:30SEA - LHR
Nonstop9h 20mIberia
Deal found 8/5£1,080
Sat 18/509:50LHR - SEA
Nonstop9h 45mIberia
Fri 24/513:30SEA - LHR
Nonstop9h 20mIberia
Deal found 7/5£1,082

  • One of the most popular airlines travelling from London Heathrow Airport to Seattle is Iberia. Flights on this route from Iberia typically cost £780.47 RT, a price that is 63% more expensive than the average London Heathrow Airport to Seattle flight. The cheapest flight found was £560 RT. 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, Iberia 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 881,145 searches. Prices were last updated on 8 May 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/515:10SEA - LHR
1 stop14h 10mAir Canada
Deal found 6/5£493
Mon 17/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 1/723:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 8/5£496
Tue 18/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 25/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 7/5£497
Tue 14/509:55LHR - SEA
1 stop14h 45mKLM
Wed 22/513:30SEA - LHR
1 stop12h 30mKLM
Deal found 7/5£498
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£499
Tue 14/510:25LHR - SEA
1 stop16h 16mUnited Airlines
Sun 19/523:45SEA - LHR
1 stop22h 10mUnited Airlines
Deal found 7/5£500
Tue 14/511:45LHR - SEA
1 stop12h 55mKLM
Wed 22/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 7/5£500
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Wed 22/505:50SEA - LHR
2 stops18h 45mAir Canada
Deal found 7/5£504
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 881,145 searches. Data last updated 8 May 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Tue 5/1108:45LHR - SEA
1 stop16h 20mLufthansa
Mon 11/1114:07SEA - LHR
1 stop13h 08mLufthansa
Deal found 7/5£468
Wed 18/914:05LHR - SEA
1 stop15h 10mAir Canada
Wed 9/1013:10SEA - LHR
1 stop16h 10mAir Canada
Deal found 7/5£473
Wed 18/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Wed 9/1013:35SEA - LHR
1 stop12h 25mVirgin Atlantic
Deal found 7/5£475
Tue 29/1020:25LHR - SEA
1 stop28h 35mIcelandair
Sat 25/114:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 7/5£476
Wed 18/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 9/1016:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£477
Mon 16/909:30LHR - SEA
2 stops16h 56mMultiple Airlines
Mon 23/910:40SEA - LHR
2 stops15h 20mMultiple Airlines
Deal found 8/5£479
Mon 16/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/909:53SEA - LHR
1 stop12h 52mVirgin Atlantic
Deal found 8/5£480
Tue 5/1111:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 11/1118:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 7/5£481
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 8/5£482

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 881,145 searches. Data last updated 8 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.
Wed 18/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 9/1016:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£477
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 23/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 8/5£482
Tue 29/1011:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Sat 25/115:20SEA - LHR
Nonstop9h 25mVirgin Atlantic
Deal found 7/5£499
Thu 26/916:00LHR - SEA
Nonstop9h 45mBritish Airways
Wed 2/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5£508
Wed 4/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£524
Tue 17/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Fri 27/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 8/5£531
Tue 17/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Fri 27/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£532
Tue 22/1016:50LHR - SEA
Nonstop10h 25mVirgin Atlantic
Sat 2/1119:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 7/5£537
Thu 12/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Tue 24/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 8/5£543

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 881,145 searches. Data last updated 8 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.
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/515:10SEA - LHR
1 stop14h 10mAir Canada
Deal found 6/5£493
Tue 14/509:55LHR - SEA
1 stop14h 45mKLM
Wed 22/513:30SEA - LHR
1 stop12h 30mKLM
Deal found 7/5£498
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£499
Tue 14/510:25LHR - SEA
1 stop16h 16mUnited Airlines
Sun 19/523:45SEA - LHR
1 stop22h 10mUnited Airlines
Deal found 7/5£500
Tue 14/511:45LHR - SEA
1 stop12h 55mKLM
Wed 22/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 7/5£500
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Wed 22/505:50SEA - LHR
2 stops18h 45mAir Canada
Deal found 7/5£504
Tue 14/516:50LHR - SEA
Nonstop10h 30mKLM
Wed 22/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 7/5£508
Tue 14/509:50LHR - SEA
Nonstop9h 45mAmerican Airlines
Sun 19/523:59SEA - LHR
1 stop14h 11mAmerican Airlines
Deal found 7/5£510
Mon 13/512:15LHR - SEA
1 stop17h 41mAmerican Airlines
Mon 20/513:30SEA - LHR
Nonstop9h 20mAmerican Airlines
Deal found 6/5£511

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 881,145 searches. Data last updated 8 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.
Thu 30/520:20LHR - SEA
3 stops44h 25mMultiple Airlines
Deal found 8/5£268
Mon 3/619:30LHR - SEA
3 stops45h 02mMultiple Airlines
Deal found 8/5£269
Sun 19/507:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 8/5£280
Thu 6/620:20LHR - SEA
3 stops43h 37mMultiple Airlines
Deal found 8/5£324
Fri 7/607:05LHR - SEA
3 stops32h 52mMultiple Airlines
Deal found 8/5£327
Fri 17/521:25LHR - SEA
2 stops30h 55mMultiple Airlines
Deal found 8/5£327
Wed 5/621:25LHR - SEA
2 stops30h 55mMultiple Airlines
Deal found 8/5£329
Tue 4/620:15LHR - SEA
2 stops32h 20mMultiple Airlines
Deal found 8/5£331
Fri 7/621:25LHR - SEA
2 stops23h 31mMultiple Airlines
Deal found 8/5£334

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 881,145 searches. Data last updated 8 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£477 - £508

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

2 stops16h 56m

Seattle/Tacoma Intl

Mon 23/9

2 stops15h 20m

£477

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 23/9

1 stop12h 52m

£480

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 21/9

1 stop28h 51m

Seattle/Tacoma Intl

Sat 5/10

1 stop14h 20m

£491

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 16/9

Nonstop10h 30m

Seattle/Tacoma Intl

Mon 23/9

1 stop12h 52m

£492

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 12/9

Nonstop9h 45m

Seattle/Tacoma Intl

Tue 24/9

2 stops19h 14m

£494

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 17/6

1 stop21h 55m

Seattle/Tacoma Intl

Mon 1/7

1 stop13h 20m

£496

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 26/9

2 stops16h 11m

Seattle/Tacoma Intl

Wed 2/10

2 stops14h 40m

£502

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 26/9

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 2/10

Nonstop9h 20m

£508

Flights are sorted by cheapest first

Deals found on 8/5

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 £310 while a return flight costs £492. 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

£476

March

£506

April

£521

May

£546

June

£613

July

£640

August

£612

September

£549

October

£525

November

£480

December

£476

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 8 May 2024.
Get a feel of what it's like to fly with KLM, Iberia and Icelandair 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
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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
8.1
Very Good
10,789 reviews
Delta
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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
1,592 reviews
Delta
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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
2,013 reviews
Delta
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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
1,379 reviews
Delta
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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.

Virgin Atlantic
7.7
Good
739 reviews
Delta
8.1
Very Good
10,789 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.1

Entertainment

8.0

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 Multiple Airlines for just £477, but on average you can expect to pay £494.

  • 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 £542.

  • 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: Wednesday, Saturday.

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

    On average, you can expect to see 4 flights from London Heathrow Airport to Seattle a day.
    Morning (6am - Midday) - 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 9h 45m. 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 (£480), Finnair (£488), and Lufthansa (£491) offers the cheapest pricing from London Heathrow Airport to Seattle. Virgin Atlantic is priced at 15% 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 £2,163. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for £468.

  • 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 8/5.

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 8 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 881,145 searches. Data last updated 8 May 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£258Average£570FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Virgin AtlanticCheapest£395Average£576FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£421Average£570FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£424Average£571FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£433Average£511FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£437Average£588FlexibilityNo cancel feeOn-time71%
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LufthansaCheapest£443Average£582FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£448Average£625FlexibilityNo 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.
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 8 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
59%of flight departuresMorning6 am to noon
40%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 8 May 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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