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

Icelandair, at £488, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Finnair and Virgin Atlantic. Icelandair is priced at 17% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from London to Seattle one-way?

£414 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Aer Lingus and Icelandair, with prices starting from £417 and £451, respectively.

What are the most popular routes from London to Seattle?

When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl as they are the most popular.

What are the cheapest flights from London to Seattle?

On average you can expect to pay £2,071 for a flight from London to Seattle. The cheapest flight overall is £534 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £427.

What are the most reliable airlines from London to Seattle?

Consider Air France (70%), Delta (70%) or Virgin Atlantic (70%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.

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

Before booking your flight from London to Seattle check out the most popular airlines for this route: Air Canada, Air France or Finnair.

What is the cheapest day to fly round-trip from London to Seattle?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 15% on the overall cost on flights from London to Seattle.

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

Travelers have found it’s best to book a flight 44 days in advance to save up to 34% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Seattle 1-2 weeks in advance for as low as £557, or £824 for flights within the next 24 hours.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Seattle. Flights to Seattle from London in January are about £592 on average during January, but can be found for as low as £347.

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

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 10 daily inbound flights from London from 12 different airlines.

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

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

How can I find direct flights from London to Seattle?

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

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

Yes. Cheapflights offers flight deals from London 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.

£414+ Flights from London to Seattle

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

Cheap flight deals from London to Seattle

Round-trip from	£488
One-way from	£414
Popular in	August
Cheapest in	January

Icelandair
7/2-6/3
2 total stops
49h 15m total
London to Seattle

Search Deals

WestJet
24/1
1 total stop
31h 48m total
London to Seattle

Search Deals

High demand for flights, 26% potential price rise

Search Deals

Best time to find cheap flights, 20% potential price drop

Search Deals

Find flight deals from London to Seattle

Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 November 2024.

Sat 23/1113:45LHR - SEA

1 stop37h 28mUnited Airlines

Mon 25/1106:05SEA - LHR

1 stop18h 25mUnited Airlines

Deal found 22/11£499

Wed 4/1208:50LGW - SEA

1 stop17h 25mMultiple Airlines

Sun 8/1223:59SEA - LGW

2 stops24h 21mMultiple Airlines

Deal found 20/11£513

Wed 27/1120:40LHR - SEA

1 stop28h 20mIcelandair

Mon 2/1214:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 21/11£519

Wed 4/1211:55LGW - SEA

1 stop13h 05mIcelandair

Sun 8/1214:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 20/11£531

Fri 6/1205:50LTN - SEA

1 stop20h 25mMultiple Airlines

Sun 15/1207:00SEA - LTN

2 stops17h 50mMultiple Airlines

Deal found 20/11£535

Thu 5/1213:00LHR - SEA

1 stop28h 50mMultiple Airlines

Thu 12/1208:05SEA - LHR

1 stop14h 35mMultiple Airlines

Deal found 21/11£548

Mon 30/1216:00LHR - SEA

1 stop24h 55mDelta

Thu 20/217:45SEA - LHR

Nonstop9h 25mDelta

Deal found 21/11£557

Wed 4/1213:00LHR - SEA

1 stop17h 00mAir Canada

Wed 11/1210:35SEA - LHR

2 stops17h 15mAir Canada

Deal found 21/11£558

Tue 10/1213:15LHR - SEA

Nonstop10h 00mKLM

Tue 7/117:45SEA - LHR

Nonstop9h 25mKLM

Deal found 21/11£566

Tue 31/1208:20LHR - SEA

1 stop16h 57mBritish Airways

Thu 20/218:50SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 21/11£568

Fri 6/1208:15STN - SEA

1 stop18h 00mMultiple Airlines

Sun 15/1207:00SEA - STN

2 stops22h 20mMultiple Airlines

Deal found 20/11£569

Tue 10/1206:20LHR - SEA

1 stop13h 00mVirgin Atlantic

Tue 7/117:45SEA - LHR

Nonstop9h 25mVirgin Atlantic

Deal found 21/11£570

Best flights from London to Seattle
Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 November 2024.

Fri 7/220:40LHR - SEA

1 stop28h 20mIcelandair

Thu 6/314:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 21/11£488

Mon 10/215:15LHR - SEA

2 stops36h 41mMultiple Airlines

Wed 12/215:15SEA - LHR

1 stop13h 35mMultiple Airlines

Deal found 21/11£491

Mon 13/109:25LHR - SEA

1 stop18h 39mFinnair

Wed 29/109:45SEA - LHR

1 stop18h 20mFinnair

Deal found 21/11£516

Mon 13/113:15LHR - SEA

Nonstop10h 00mVirgin Atlantic

Wed 29/117:45SEA - LHR

Nonstop9h 25mVirgin Atlantic

Deal found 21/11£523

Mon 13/114:30LHR - SEA

2 stops27h 20mAir Canada

Wed 29/110:35SEA - LHR

1 stop15h 35mAir Canada

Deal found 21/11£524

Wed 8/118:00LHR - SEA

1 stop35h 30mLufthansa

Mon 13/109:20SEA - LHR

1 stop14h 05mLufthansa

Deal found 21/11£527

Mon 17/213:00LHR - SEA

1 stop13h 25mUnited Airlines

Mon 3/310:35SEA - LHR

1 stop15h 35mUnited Airlines

Deal found 21/11£535

Mon 13/106:30LHR - SEA

1 stop13h 20mDelta

Thu 23/117:45SEA - LHR

Nonstop9h 25mDelta

Deal found 20/11£545

Wed 19/206:20LHR - SEA

1 stop13h 45mKLM

Fri 28/219:30SEA - LHR

Nonstop9h 40mKLM

Deal found 21/11£546

Mon 13/119:25LHR - SEA

2 stops33h 06mAustrian Airlines

Sun 26/108:00SEA - LHR

2 stops39h 55mAustrian Airlines

Deal found 22/11£546

Wed 19/215:00LHR - SEA

Nonstop9h 55mBritish Airways

Wed 26/218:50SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 21/11£554

Mon 17/215:00LHR - SEA

Nonstop9h 55mIberia

Thu 27/218:50SEA - LHR

Nonstop9h 25mIberia

Deal found 21/11£560

Direct flights from London to Seattle
Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 November 2024.

Mon 13/113:15LHR - SEA

Nonstop10h 00mVirgin Atlantic

Wed 29/117:45SEA - LHR

Nonstop9h 25mVirgin Atlantic

Deal found 21/11£523

Wed 15/113:15LHR - SEA

Nonstop10h 00mKLM

Wed 22/117:45SEA - LHR

Nonstop9h 25mKLM

Deal found 21/11£528

Tue 21/115:00LHR - SEA

Nonstop9h 55mBritish Airways

Thu 30/118:50SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 21/11£532

Tue 18/209:25LHR - SEA

Nonstop9h 55mFinnair

Thu 27/218:50SEA - LHR

Nonstop9h 25mFinnair

Deal found 21/11£552

Mon 13/115:00LHR - SEA

Nonstop9h 55mIberia

Thu 23/118:50SEA - LHR

Nonstop9h 25mIberia

Deal found 20/11£558

Sun 12/115:50LHR - SEA

Nonstop10h 35mDelta

Wed 5/217:45SEA - LHR

Nonstop9h 25mDelta

Deal found 22/11£585

Wed 7/517:00LHR - SEA

Nonstop10h 35mAir France

Sun 18/519:55SEA - LHR

Nonstop9h 35mAir France

Deal found 21/11£588

Wed 4/1215:00LHR - SEA

Nonstop9h 55mAmerican Airlines

Wed 11/1218:50SEA - LHR

Nonstop9h 25mAmerican Airlines

Deal found 21/11£607

Fri 13/1209:25LHR - SEA

Nonstop9h 55mMultiple Airlines

Tue 17/1213:35SEA - LHR

Nonstop9h 25mMultiple Airlines

Deal found 21/11£727

Last-minute flights from London to Seattle
Discover last-minute flight deals from London to Seattle. Data last updated 22 November 2024 and is based on user searches.

Sat 23/1113:45LHR - SEA

1 stop37h 28mUnited Airlines

Mon 25/1106:05SEA - LHR

1 stop18h 25mUnited Airlines

Deal found 22/11£499

Wed 27/1120:40LHR - SEA

1 stop28h 20mIcelandair

Mon 2/1214:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 21/11£519

Wed 27/1115:15LHR - SEA

2 stops31h 35mMultiple Airlines

Wed 4/1215:15SEA - LHR

1 stop13h 35mMultiple Airlines

Deal found 21/11£667

Wed 27/1116:45LGW - SEA

1 stop27h 30mMultiple Airlines

Mon 2/1217:28SEA - LGW

1 stop33h 07mMultiple Airlines

Deal found 21/11£676

Wed 27/1118:00LHR - SEA

2 stops28h 30mAir Canada

Wed 4/1205:45SEA - LHR

2 stops17h 25mAir Canada

Deal found 21/11£693

Wed 27/1115:00LHR - SEA

Nonstop9h 55mIberia

Wed 4/1218:50SEA - LHR

Nonstop9h 25mIberia

Deal found 21/11£706

Wed 27/1115:00LHR - SEA

Nonstop9h 55mBritish Airways

Wed 4/1207:20SEA - LHR

1 stop18h 20mBritish Airways

Deal found 21/11£709

Wed 27/1113:15LHR - SEA

Nonstop10h 00mKLM

Mon 2/1217:45SEA - LHR

Nonstop9h 25mKLM

Deal found 21/11£776

Wed 27/1109:25LCY - SEA

2 stops21h 21mMultiple Airlines

Wed 4/1214:00SEA - LCY

1 stop18h 40mMultiple Airlines

Deal found 21/11£786

Thu 28/1111:55LGW - SEA

1 stop13h 05mIcelandair

Thu 5/1214:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 21/11£550

Thu 28/1112:40LHR - SEA

Nonstop10h 00mVirgin Atlantic

Thu 5/1209:00SEA - LHR

1 stop14h 05mVirgin Atlantic

Deal found 20/11£705

Thu 28/1106:30LHR - SEA

1 stop13h 10mDelta

Thu 5/1217:45SEA - LHR

Nonstop9h 25mDelta

Deal found 21/11£723

One-way flights from London to Seattle
Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 22 November 2024.

Fri 24/114:50LHR - SEA

1 stop31h 48mWestJet

Deal found 21/11£414

Wed 15/121:40LTN - SEA

3 stops27h 20mMultiple Airlines

Deal found 22/11£415

Wed 27/1108:50LHR - SEA

1 stop17h 25mAer Lingus

Deal found 21/11£417

Wed 4/1206:50LCY - SEA

1 stop19h 25mAer Lingus

Deal found 21/11£423

Mon 9/1220:40LHR - SEA

2 stops45h 57mMultiple Airlines

Deal found 21/11£432

Sun 8/1212:00LGW - SEA

1 stop28h 57mMultiple Airlines

Deal found 21/11£435

Fri 6/1206:30STN - SEA

2 stops40h 20mMultiple Airlines

Deal found 21/11£438

Sun 12/120:40LHR - SEA

1 stop28h 20mIcelandair

Deal found 21/11£451

Fri 6/1214:20SEN - SEA

2 stops32h 30mMultiple Airlines

Deal found 21/11£458

Sun 19/111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 21/11£460

Sun 12/120:05LCY - SEA

3 stops28h 55mMultiple Airlines

Deal found 21/11£470

Fri 6/1215:50LHR - SEA

Nonstop10h 40mVirgin Atlantic

Deal found 21/11£482

Find flights from London to Seattle within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 7/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Thu 6/3

14:35-10:55

1 stop12h 20m

£488

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 7/2

20:40-17:00

1 stop28h 20m

Seattle/Tacoma Intl

Thu 6/3

14:35-19:30

1 stop20h 55m

£488

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 10/2

15:15-19:56

2 stops36h 41m

Seattle/Tacoma Intl

Wed 12/2

15:15-12:50

1 stop13h 35m

£491

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 21/1

08:15-00:14

3 stops47h 59m

Seattle/Tacoma Intl

Thu 30/1

05:30-10:35

1 stop21h 05m

£493

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 13/1

09:25-20:04

1 stop18h 39m

Seattle/Tacoma Intl

Wed 29/1

09:45-12:05

1 stop18h 20m

£516

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 15/1

06:30-11:50

1 stop13h 20m

Seattle/Tacoma Intl

Wed 22/1

19:00-12:40

Nonstop9h 40m

£519

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 13/1

13:15-15:15

Nonstop10h 00m

Seattle/Tacoma Intl

Wed 29/1

17:45-11:10

Nonstop9h 25m

£523

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 13/1

14:30-09:50

2 stops27h 20m

Seattle/Tacoma Intl

Wed 29/1

10:35-10:10

1 stop15h 35m

£524

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 8/1

18:00-21:30

1 stop35h 30m

Seattle/Tacoma Intl

Mon 13/1

09:20-07:25

1 stop14h 05m

£527

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 17/2

13:00-18:25

1 stop13h 25m

Seattle/Tacoma Intl

Mon 3/3

10:35-10:10

1 stop15h 35m

£535

Flights are sorted by cheapest return flights first.

Deals found on 21/11

Showing 1-10 of 59 results

...

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from London to Seattle

Get recent, data-driven insights about flights from London to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to Seattle?

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Seattle?

Currently, January is the cheapest month in which you can book a flight from London to Seattle (average of £616). Flying from London to Seattle in July is currently the most expensive (average of £841). 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.

What is the cheapest time of day to fly from LON to SEA?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 12% on flights from London to Seattle by exploring options for tickets in the evening.

What is the cheapest day to fly from London to Seattle?

Travellers seeking maximum savings on their London to Seattle flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from London to Seattle, such as Icelandair, Lufthansa and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates

8.1

Very Good

3,484 reviews

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

Air New Zealand

8.1

Very Good

527 reviews

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

Delta

8.0

Very Good

8,747 reviews

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

KLM

7.8

Good

1,346 reviews

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

Finnair

7.7

Good

1,299 reviews

Emirates

8.1

Very Good

3,484 reviews

Check prices

Reviews

1 / 10

Related info for your journey

What airport do you fly into for flights to Seattle from London?
Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 10 daily inbound flights from London from 12 different airlines.
What are the cheapest airlines flying from London to Seattle round-trip?
Icelandair, at £488, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Finnair and Virgin Atlantic. Icelandair is priced at 17% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from London to Seattle one-way?
£414 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Aer Lingus and Icelandair, with prices starting from £417 and £451, respectively.
What are the most popular routes from London to Seattle?
When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl as they are the most popular.
What are the most reliable airlines from London to Seattle?
Consider Air France (70%), Delta (70%) or Virgin Atlantic (70%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.
What are the cheapest flights from London to Seattle?
On average you can expect to pay £2,071 for a flight from London to Seattle. The cheapest flight overall is £534 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £427.
Can I find deals for flights from London to Seattle that include hotel bookings?
Yes. In addition to deals on London to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Seattle.
Can I find deals for business class flights from London to Seattle?
Yes. Cheapflights offers flight deals from London 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.
What is the cheapest month to book a flight from London to Seattle?
Currently, January is the cheapest month in which you can book a flight from London to Seattle (average of £616). Flying from London to Seattle in July is currently the most expensive (average of £841). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from London to Seattle

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£307	Average£566	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Delta	Cheapest£320	Average£639	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Icelandair	Cheapest£389	Average£564	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£408	Average£574	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£421	Average£625	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£438	Average£688	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Air Canada	Cheapest£442	Average£579	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£448	Average£652	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£450	Average£605	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air France	Cheapest£478	Average£628	FlexibilityNo cancel fee	On-time77%	Search Air France flights

Fly with Cheapflights

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

Cheapflights makes it easy to find London to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Seattle from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on London to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London to Seattle from £414

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from London to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Find flight deals from London to Seattle

Cheapest flights from London to SeattleExplore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 November 2024.

Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 November 2024.

Find flights from London to Seattle within your budget

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London with our price prediction graph.

Travel insights for flights from London to Seattle

Get recent, data-driven insights about flights from London to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to Seattle?

Use this chart to determine the optimal time to book a return flight from London to Seattle. Price data was last updated on 15 November 2024.

What is the cheapest month to book a flight from London to Seattle?

What is the cheapest time of day to fly from LON to SEA?

Find hourly flight availability from London 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 22 November 2024.

What is the cheapest day to fly from London to Seattle?

Use this chart to determine the cheapest time to fly return from London to Seattle. Price data was last updated on 18 November 2024.

Rainfall in Seattle by month

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

Temperature in Seattle by month

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

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from London to Seattle, such as Icelandair, Lufthansa and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London 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?

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

What are the cheapest airlines to fly from London to Seattle one-way?

What are the most popular routes from London to Seattle?

What are the most reliable airlines from London to Seattle?

What are the cheapest flights from London to Seattle?

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

How can I find direct flights from London to Seattle?

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

What is the cheapest month to book a flight from London to Seattle?

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Fly from London to Seattle on these airlines

Choose from the following airlines for your flight from London to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 22 November 2024.

Top 10 airlines flying from London to Seattle

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Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 November 2024.