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LON - SEA

€271 Find cheap flights from London to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Seattle departing on 28/8. 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.
1 adult
0 bags
Tue 9/7
Tue 16/7

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,898,604 times on KAYAK, and here's why:

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Cheap flight deals from London to Seattle (LON-SEA)

 
These are the cheapest deals for flights from London to Seattle currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from London to Seattle

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to Seattle.

Recent one-way flight deals from London to Seattle

Only flying one-way? Below are some of the best one-way flight deals from London to Seattle found on KAYAK recently.

Recent last-minute flight deals from London to Seattle

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from London to Seattle.

Recent direct flight deals from London to Seattle

The latest deals for direct flights from London to Seattle so you can sit back and relax without the need for a layover.

Cheap bus & train deals from London to Seattle

Find recent round-trip train or bus tickets from London to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:00 - 17:00LGW-SEA
13h 00m1 stop
14:35 - 10:55SEA-LGW
12h 20m1 stop
€603Icelandair
Find Deal
Tue, 5 Nov - Wed, 5 Feb
12:15 - 17:00LHR-SEA
12h 45m1 stop
14:35 - 10:55SEA-LHR
12h 20m1 stop
€605Icelandair
Find Deal
Mon, 4 Nov - Thu, 14 Nov
06:30 - 14:30LHR-SEA
16h 00m2 stops
07:00 - 05:55SEA-LHR
14h 55m1 stop
€606Lufthansa
Find Deal
Mon, 16 Sep - Mon, 30 Sep
06:30 - 14:30LHR-SEA
16h 00m2 stops
14:13 - 11:45SEA-LHR
13h 32m1 stop
€608Lufthansa
Find Deal
Wed, 11 Sep - Tue, 24 Sep
06:30 - 14:30LHR-SEA
16h 00m2 stops
08:05 - 06:45SEA-LHR
14h 40m1 stop
€610
Find Deal
Mon, 23 Sep - Mon, 30 Sep
06:15 - 17:50LHR-SEA
19h 35m1 stop
22:59 - 20:10SEA-LHR
13h 11m1 stop
€613Delta
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Wed, 11 Sep - Wed, 25 Sep
06:15 - 11:20LHR-SEA
13h 05m1 stop
22:59 - 20:10SEA-LHR
13h 11m1 stop
€617Delta
Find Deal
Tue, 10 Sep - Sun, 22 Sep
06:30 - 14:30LHR-SEA
16h 00m2 stops
08:10 - 06:45SEA-LHR
14h 35m1 stop
€621
Find Deal
Mon, 9 Sep - Wed, 25 Sep
16:35 - 20:00LHR-SEA
10h 25mdirect
11:15 - 10:30SEA-LHR
15h 15m1 stop
€629KLM
Find Deal
Tue, 29 Oct - Mon, 4 Nov
16:50 - 19:20LHR-SEA
10h 30mdirect
21:15 - 14:50SEA-LHR
9h 35mdirect
€631KLM
Find Deal
Tue, 10 Sep - Mon, 23 Sep
10:45 - 21:48LGW-SEA
19h 03m1 stop
€271
Find Deal
Wed, 28 Aug
10:45 - 21:48LGW-SEA
19h 03m1 stop
€355
Find Deal
Sun, 25 Aug
14:50 - 12:58LHR-SEA
30h 08m2 stops
€596WestJet
Find Deal
Mon, 18 Nov
10:30 - 22:49LGW-SEA
20h 19m1 stop
€698JetBlue
Find Deal
Mon, 21 Oct
21:25 - 11:20LHR-SEA
21h 55m1 stop
€699Icelandair
Find Deal
Wed, 7 Aug
13:00 - 17:55LGW-SEA
12h 55m1 stop
€703Icelandair
Find Deal
Sat, 21 Sep
10:30 - 22:19LGW-SEA
19h 49m1 stop
€714JetBlue
Find Deal
Mon, 26 Aug
10:40 - 21:56LGW-SEA
43h 16m3 stops
€844TAP AIR PORTUGAL
Find Deal
Wed, 4 Dec
08:15 - 21:56LHR-SEA
45h 41m3 stops
€846TAP AIR PORTUGAL
Find Deal
Wed, 4 Dec
09:00 - 20:22LHR-SEA
19h 22m2 stops
€1,057WestJet
Find Deal
Tue, 30 Jul
13:00 - 17:40LGW-SEA
12h 40m1 stop
15:50 - 11:45SEA-LGW
11h 55m1 stop
€848Icelandair
Find Deal
Thu, 13 Jun - Thu, 4 Jul
10:30 - 22:52LHR-SEA
20h 22m2 stops
13:59 - 17:40SEA-LHR
19h 41m2 stops
€880
Find Deal
Thu, 13 Jun - Thu, 4 Jul
08:30 - 22:52LHR-SEA
22h 22m2 stops
13:59 - 17:40SEA-LHR
19h 41m2 stops
€885
Find Deal
Thu, 13 Jun - Thu, 4 Jul
08:25 - 19:20LHR-SEA
18h 55m1 stop
23:30 - 20:45SEA-LHR
13h 15m1 stop
€934JetBlue
Find Deal
Thu, 13 Jun - Thu, 4 Jul
16:50 - 19:10LHR-SEA
10h 20mdirect
00:25 - 07:15SEA-LHR
22h 50m1 stop
€1,072Delta
Find Deal
Tue, 11 Jun - Sun, 23 Jun
16:50 - 19:10LHR-SEA
10h 20mdirect
00:25 - 07:15SEA-LHR
22h 50m1 stop
€1,075Delta
Find Deal
Tue, 11 Jun - Sun, 23 Jun
18:45 - 18:27LGW-SEA
31h 42m2 stops
10:53 - 17:50SEA-LGW
22h 57m2 stops
€1,090SWISS
Find Deal
Wed, 12 Jun - Mon, 17 Jun
12:00 - 10:03LGW-SEA
30h 03m2 stops
06:00 - 10:00SEA-LGW
20h 00m2 stops
€1,108KLM
Find Deal
Tue, 11 Jun - Fri, 12 Jul
16:50 - 19:10LHR-SEA
10h 20mdirect
13:30 - 10:00SEA-LHR
12h 30m1 stop
€1,112KLM
Find Deal
Fri, 14 Jun - Tue, 25 Jun
18:45 - 18:40LGW-SEA
31h 55m2 stops
15:35 - 17:55SEA-LGW
18h 20m2 stops
€1,134SWISS
Find Deal
Fri, 14 Jun - Wed, 17 Jul
16:50 - 19:20LHR-SEA
10h 30mdirect
21:15 - 14:50SEA-LHR
9h 35mdirect
€631KLM
Find Deal
Tue, 10 Sep - Mon, 23 Sep
14:50 - 16:45LHR-SEA
9h 55mdirect
13:35 - 07:00SEA-LHR
9h 25mdirect
€633British Airways
Find Deal
Tue, 5 Nov - Tue, 4 Feb
12:45 - 14:40LHR-SEA
9h 55mdirect
21:15 - 14:50SEA-LHR
9h 35mdirect
€634Delta
Find Deal
Mon, 23 Sep - Mon, 30 Sep
14:50 - 16:45LHR-SEA
9h 55mdirect
18:45 - 12:05SEA-LHR
9h 20mdirect
€649British Airways
Find Deal
Sat, 9 Nov - Mon, 11 Nov
09:25 - 12:25LHR-SEA
10h 00mdirect
18:45 - 12:05SEA-LHR
9h 20mdirect
€650British Airways
Find Deal
Fri, 1 Nov - Wed, 6 Nov
16:35 - 20:00LHR-SEA
10h 25mdirect
18:05 - 11:40SEA-LHR
9h 35mdirect
€654KLM
Find Deal
Thu, 31 Oct - Tue, 5 Nov
16:00 - 17:45LHR-SEA
9h 45mdirect
19:40 - 13:00SEA-LHR
9h 20mdirect
€654British Airways
Find Deal
Thu, 17 Oct - Thu, 24 Oct
16:50 - 19:20LHR-SEA
10h 30mdirect
16:30 - 09:50SEA-LHR
9h 20mdirect
€671Delta
Find Deal
Sun, 8 Sep - Tue, 24 Sep
16:50 - 19:15LHR-SEA
10h 25mdirect
21:15 - 14:50SEA-LHR
9h 35mdirect
€766Virgin Atlantic
Find Deal
Wed, 3 Jul - Thu, 11 Jul
16:50 - 19:15LHR-SEA
10h 25mdirect
21:15 - 14:50SEA-LHR
9h 35mdirect
€773Virgin Atlantic
Find Deal
Wed, 3 Jul - Wed, 10 Jul

Flights from London to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from London to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest London to Seattle flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from London to Seattle.
Our data shows that the cheapest route for a one-way flight from London to Seattle cost €804 and was between London Heathrow Airport and Seattle. On average, the best prices are found if you fly this route. The average price for a return flight for this route is €993.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London to Seattle is November, where tickets cost €527 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is €838 and €799 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 80 days before departure.

Which airlines provide the cheapest flights from London to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Seattle from London were found on WestJet (€596) and JetBlue (€698), and the lowest return tickets were found on Icelandair (€603) and Lufthansa (€606).

Which airlines fly most frequently between London and Seattle?

British Airways connects London to Seattle with up to 2 flights per day. Delta also offers 2 flights per day, while Virgin Atlantic follows with 1 flight per day.

How many flights are there between London and Seattle per day?

Each day, there are between 5 and 7 nonstop flights that take off from London and land in Seattle, with an average flight time of 9h 53m. The most common departure time is 09:00 and most flights take off in the afternoon. Each week, there are 41 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Friday.

Which cabin class options are there for flights between London and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from London to Seattle take?

Direct flights cover the 12,406 km separating London and Seattle in about 9h 45m.

What’s the earliest departure time from London to Seattle?

Early birds can take the earliest flight from London at 09:45 and will be landing in Seattle at 11:30.

What’s the latest departure time from London to Seattle?

If you prefer to fly at night, the latest flight from London to Seattle jets off at 16:50 and lands at 19:10.

Good to know

Low season

January

High season

July
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (29% more expensive on average)

When to book flights from London to Seattle

Are your dates flexible? Find out the best times to travel from London to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Seattle

  • Are there any passenger lounges at Stansted Airport?

    Those flying from London’s Stansted Airport (STN) can relax in style at the Escape Lounge. You can find this lounge in the main departure area once you have passed through security and the duty-free area. You can pre-book your entry into the lounge for £25 per person, however infants younger than 2 years can enter free of charge. The lounge is open from 4:00 – 22:30 daily.

  • How do I travel from Seattle Airport into the city?

    If you would like to use public transport to travel into the city from Seattle Airport, you can catch the Red Line of the Link Light Rail train system from the airport station to Pioneer Square Station in downtown Seattle. The trip takes about 40min. There are also a number of bus services that can take you throughout the greater Seattle area, including the 574 line to Tacoma, taking approximately 30min.

  • How do I get to Gatwick Airport?

    The fastest way to get to London’s Gatwick Airport (LGW) using public transport from Central London is to take the Gatwick Express train. You can catch this train from Victoria Station every day from 5:00 – midnight. This train runs every 15min, stopping at Gatwick Airport’s South Terminal and taking 30min. Alternatively, the Thameslink also runs to Gatwick Airport in 30min from London Bridge Station every 20min.

  • What restaurants are there at Heathrow Airport?

    If you have time before you fly from Heathrow Airport (LHR), you can enjoy a wide range of restaurants and dining options throughout the airport, depending on which terminal you are flying from. If you’re looking for a sit-down meal, you can find the Gorgeous Kitchen in Terminal 2, The Curator or The Cavier House & Prunier in Terminal 3, The Prince of Wales or Comptoir Libanais in Terminal 4 or the Crown Rivers Bar & Food at Terminal 5.

  • What is the cheapest flight from London to Seattle?

    In the last 3 days, the lowest price for a flight from London to Seattle was €293 for a one-way ticket and €651 for a return.

  • Which airlines offer Wi-Fi service onboard planes from London to Seattle?

    KLM, Delta, Air France, and Virgin Atlantic offer inflight Wi-Fi service on the London to Seattle flight route.

  • Which aircraft models fly most regularly from London to Seattle?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the London to Seattle flight route.

  • Which airline alliances offer flights from London to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between London and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from London to Seattle?

    There are direct flights from London to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from London to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London to Seattle

  • Seattle-Tacoma Airport (SEA) is located approximately 20min from downtown Seattle and serves nearby cities in northern Washington state, including Olympia (1h 15min away), Everett (1h 15min away) and Tacoma (45min away).
  • Before your flight from London to Seattle, you will need to register your travel plans. The UK has a visa waiver agreement with the USA and British Passport holders can apply online for the Electronic System for Travel Authorization (ESTA). This grants you entry into the USA and travel for up to 90 days.
  • If you’re not in Seattle long and would like to explore the city without all of your luggage, you can store your bags at Smarte Carte in the baggage claim area in the main terminal of Seattle Airport. Smarte Carte also has copying and postal services and travel convenience items for sale.
  • Those who are a little lost and need some help or advice on airport facilities can find airport volunteers throughout Seattle Airport. The volunteers can point the way to things like restaurants and stores but do not escort passengers to connecting flights.
  • If you’re looking for things to do at Seattle Airport after your flight from London to Seattle, you can go on an art walk through the terminal. To find out information on the individual pieces of art, you can download the STQRY app by following links to the airport website.
See more tips

Prefer to fly direct from London to Seattle/Tacoma Intl?

Find which airlines fly direct from London to Seattle/Tacoma Intl, which days they fly and book direct flights.

Direct departures

London to Seattle/Tacoma Intl

Monday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Tuesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Wednesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Thursday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Friday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Saturday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Sunday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to London

Monday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Tuesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Wednesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Thursday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Friday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Saturday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Sunday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

See more direct flights
See more direct flights

Book cheap flights from London to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Seattle found on KAYAK in the last 72 hours.
28/8Wed
1 stop
19h 03mLGW-SEA
€271
25/8Sun
1 stop
19h 03mLGW-SEA
€355
18/11Mon
2 stopsWestJet
30h 08mLHR-SEA
€596
21/10Mon
1 stopJetBlue
20h 19mLGW-SEA
€698
7/8Wed
1 stopIcelandair
21h 55mLHR-SEA
€699
21/9Sat
1 stopIcelandair
12h 55mLGW-SEA
€703
26/8Mon
1 stopJetBlue
19h 49mLGW-SEA
€714
4/12Wed
3 stopsTAP AIR PORTUGAL
43h 16mLGW-SEA
€844
4/12Wed
3 stopsTAP AIR PORTUGAL
45h 41mLHR-SEA
€846
30/7Tue
2 stopsWestJet
19h 22mLHR-SEA
€1,057

Search by stops

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Last minute flights from London to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Seattle that are departing in the next 10 days.
13/6Thu
multi-stopIcelandair
12h 40mLGW-SEA
4/7Thu
multi-stopIcelandair
11h 55mSEA-LGW
€848
13/6Thu
multi-stop
20h 22mLHR-SEA
4/7Thu
multi-stop
19h 41mSEA-LHR
€880
13/6Thu
multi-stop
22h 22mLHR-SEA
4/7Thu
multi-stop
19h 41mSEA-LHR
€885
13/6Thu
multi-stopJetBlue
18h 55mLHR-SEA
4/7Thu
multi-stopJetBlue
13h 15mSEA-LHR
€934
11/6Tue
directDelta
10h 20mLHR-SEA
23/6Sun
multi-stopDelta
22h 50mSEA-LHR
€1,072
11/6Tue
directDelta
10h 20mLHR-SEA
23/6Sun
multi-stopDelta
22h 50mSEA-LHR
€1,075
12/6Wed
multi-stopSWISS
31h 42mLGW-SEA
17/6Mon
multi-stopSWISS
22h 57mSEA-LGW
€1,090
11/6Tue
multi-stopKLM
30h 03mLGW-SEA
12/7Fri
multi-stopKLM
20h 00mSEA-LGW
€1,108
14/6Fri
directKLM
10h 20mLHR-SEA
25/6Tue
multi-stopKLM
12h 30mSEA-LHR
€1,112
14/6Fri
multi-stopSWISS
31h 55mLGW-SEA
17/7Wed
multi-stopSWISS
18h 20mSEA-LGW
€1,134

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Flights to Seattle

Destination:

Seattle (SEA)United States

Cabin classes:

€3,781
€993

Browse origins:

  • Flights » 
  • London

Browse destinations:

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  • Worldwide » 
  • Seattle