Cheap Flights from London to Seattle, WA from $270

Return flight: Seattle – London

On Cheapflightsplus.com you will find 13 direct and 762 connecting flights from London to Seattle. You can compare airfare deals from 37 airlines and multiple travel sites from $270, book and save on cheap plane tickets and last minute offers. Also check out LON-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip London to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $270 (one-way), $463 (round-trip).
Direct flights
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Full flight schedule will help you in detecting at what time planes fly from London to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
09:25 — 11:10
09:25 — 11:10 BA53 British Airways
London — Seattle
9h 45m
Find flight
from$394
09:25 — 11:10
09:25 — 11:10 IB3509 Iberia
London — Seattle
9h 45m
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from$413
09:50 — 11:35
09:50 — 11:35 AY5451 Finnair
London — Seattle
9h 45m
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from$785
09:50 — 11:35
09:50 — 11:35 EI8753 Aer Lingus
London — Seattle
9h 45m
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from$813
13:25 — 15:45
13:25 — 15:45 AF9904 Air France
London — Seattle
10h 20m
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from$441
13:25 — 15:45
13:25 — 15:45 KL4818 KLM
London — Seattle
10h 20m
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from$441
13:25 — 15:45
13:25 — 15:45 VS105 Virgin Atlantic Airways
London — Seattle
10h 20m
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from$1413
16:30 — 18:20
16:30 — 18:20 BA49 British Airways
London — Seattle
9h 50m
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from$379
16:30 — 18:20
16:30 — 18:20 IB3507 Iberia
London — Seattle
9h 50m
Find flight
from$777
16:30 — 18:20
16:30 — 18:20 AY5449 Finnair
London — Seattle
9h 50m
Find flight
from$783
17:25 — 19:45
17:25 — 19:45 KL6022 KLM
London — Seattle
10h 20m
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from$456
18:00 — 20:20
18:00 — 20:20 VS4036 Virgin Atlantic Airways
London — Seattle
10h 20m
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from$480
18:30 — 20:50
18:30 — 20:50 AF3586 Air France
London — Seattle
10h 20m
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from$456
08:50 — 17:50
08:50 — 10:15 EI153 Aer Lingus
London — Dublin
5h 55m stop
16:30 — 18:15 EI53 Aer Lingus
Dublin — Seattle
17h
including layover
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from$374
09:50 — 17:50
09:50 — 11:15 EI155 Aer Lingus
London — Dublin
4h 55m stop
16:30 — 18:15 EI53 Aer Lingus
Dublin — Seattle
16h
including layover
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from$374
10:45 — 16:50
+1 day
10:55 — 14:10 Z0711 Z0
London — Los Angeles
24h 3m stop
15:05 — 17:56 HA6197 Hawaiian Airlines
Los Angeles — Seattle
38h 5m
including layover
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from$276
10:45 — 16:50
+1 day
10:45 — 14:00 Z0711 Z0
London — Los Angeles
24h 3m stop
13:58 — 16:53 AS1083 Alaska Airlines
Los Angeles — Seattle
38h 5m
including layover
Find flight
from$279
12:00 — 17:50
12:10 — 13:35 EI159 Aer Lingus
London — Dublin
2h 45m stop
16:30 — 18:15 EI53 Aer Lingus
Dublin — Seattle
13h 50m
including layover
Find flight
from$374
13:05 — 22:32
13:05 — 15:55 Z0701 Z0
London — Newark
3h 34m stop
19:29 — 22:32 HA4813 Hawaiian Airlines
Newark — Seattle
17h 27m
including layover
Find flight
from$338
14:00 — 12:39
+1 day
14:00 — 18:25 Z0783 Z0
London — Orlando
15h 5m stop
09:30 — 12:39 AS917 Alaska Airlines
Orlando — Seattle
30h 39m
including layover
Find flight
from$387
06:15 — 18:38
06:50 — 08:55 U22635 EasyJet
London — Reykjavik
1h 15m stop
09:35 — 10:35 WS39 WestJet
Reykjavik — Calgary
7h 10m stop
17:45 — 18:37 WS1552 WestJet
Calgary — Seattle
20h 23m
including layover
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from$373
06:40 — 16:00
06:40 — 09:30 SK500 SAS
London — Copenhagen
2h 55m stop
12:25 — 14:55 AY966 Finnair
Copenhagen — Helsinki
1h 25m stop
16:20 — 16:00 AY33 Finnair
Helsinki — Seattle
17h 20m
including layover
Find flight
from$369
07:25 — 10:29
+1 day
07:25 — 10:40 VY6008 Vueling
London — Barcelona
7h 50m stop
18:30 — 21:40 VY9797 Vueling
Barcelona — New York
9h 40m stop
07:20 — 10:29 HA4991 Hawaiian Airlines
New York — Seattle
35h 4m
including layover
Find flight
from$328
07:25 — 10:22
+1 day
07:25 — 10:40 VY6008 Vueling
London — Barcelona
7h 50m stop
18:30 — 21:40 VY9797 Vueling
Barcelona — Newark
9h 39m stop
07:19 — 10:22 HA4900 Hawaiian Airlines
Newark — Seattle
34h 57m
including layover
Find flight
from$349
11:00 — 20:40
11:00 — 14:35 D84452 Djibouti Airlines
London — Hagersten
2h 5m stop
16:40 — 17:55 FI309 Icelandair
Hagersten — Reykjavik
1h 50m stop
19:45 — 20:40 FI683 Icelandair
Reykjavik — Seattle
17h 40m
including layover
Find flight
from$390
12:45 — 16:00
+1 day
12:45 — 15:50 RK1394 RK
London — Oslo
16h 45m stop
08:35 — 10:55 AY912 Finnair
Oslo — Helsinki
5h 25m stop
16:20 — 16:00 AY33 Finnair
Helsinki — Seattle
35h 15m
including layover
Find flight
from$374
13:00 — 10:29
+1 day
13:00 — 16:10 VY7833 Vueling
London — Barcelona
2h 20m stop
18:30 — 21:40 VY9797 Vueling
Barcelona — New York
9h 40m stop
07:20 — 10:29 HA4991 Hawaiian Airlines
New York — Seattle
29h 29m
including layover
Find flight
from$337
14:25 — 17:50
+1 day
14:25 — 17:10 U26323 EasyJet
London — Zurich
18h 5m stop
11:15 — 12:35 EI343 Aer Lingus
Zurich — Dublin
3h 35m stop
16:10 — 17:50 EI53 Aer Lingus
Dublin — Seattle
35h 25m
including layover
Find flight
from$360
17:30 — 17:50
+1 day
17:30 — 20:15 U28473 EasyJet
London — Zurich
15h stop
11:15 — 12:35 EI343 Aer Lingus
Zurich — Dublin
3h 35m stop
16:10 — 17:50 EI53 Aer Lingus
Dublin — Seattle
32h 20m
including layover
Find flight
from$359
17:45 — 16:00
+2 days
17:45 — 20:20 U28495 EasyJet
London — Geneva
22h 35m stop
18:55 — 22:50 AY1534 Finnair
Geneva — Helsinki
17h 30m stop
16:20 — 16:00 AY33 Finnair
Helsinki — Seattle
54h 15m
including layover
Find flight
from$389
19:50 — 09:55
+2 days
19:50 — 22:15 VY8945 Vueling
London — Paris
16h 35m stop
14:50 — 17:30 BF730 Bluebird Cargo
Paris — Los Angeles
13h 30m stop
07:00 — 09:55 HA6194 Hawaiian Airlines
Los Angeles — Seattle
46h 5m
including layover
Find flight
from$315
19:50 — 14:49
+2 days
19:50 — 22:15 VY8945 Vueling
London — Paris
16h 35m stop
14:50 — 17:30 BF730 Bluebird Cargo
Paris — Los Angeles
18h 30m stop
12:00 — 14:49 HA6204 Hawaiian Airlines
Los Angeles — Seattle
50h 59m
including layover
Find flight
from$315
20:05 — 17:50
+1 day
20:05 — 22:45 LX339 SWISS International Air Lines
London — Zurich
12h 30m stop
11:15 — 12:35 EI343 Aer Lingus
Zurich — Dublin
3h 35m stop
16:10 — 17:50 EI53 Aer Lingus
Dublin — Seattle
29h 45m
including layover
Find flight
from$378
20:50 — 20:40
+1 day
20:50 — 23:55 DY1311 Norwegian
London — Oslo
16h 50m stop
16:30 — 17:20 FI323 Icelandair
Oslo — Reykjavik
2h 10m stop
19:45 — 20:40 FI683 Icelandair
Reykjavik — Seattle
31h 50m
including layover
Find flight
from$391
21:20 — 08:53
+2 days
21:20 — 00:55 W46004 Aero Services Executive
London — Rome
10h 40m stop
11:35 — 15:15 N0411 N0
Rome — Los Angeles
14h 45m stop
06:00 — 08:53 AS1293 Alaska Airlines
Los Angeles — Seattle
43h 33m
including layover
Find flight
from$270
21:20 — 23:59
+1 day
21:20 — 00:55 W46004 Aero Services Executive
London — Rome
10h 40m stop
11:35 — 15:15 N0411 N0
Rome — Los Angeles
5h 55m stop
21:10 — 23:59 HA4960 Hawaiian Airlines
Los Angeles — Seattle
34h 39m
including layover
Find flight
from$276
*Departure and arrival times - local. Updated on June 22, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from London to Seattle depends on and how to choose the most interesting flight option for you.

Distance between London and Seattle is 7714 miles. Time difference between the cities is 8h. Airplanes depart 06:00 to 23:10 from 10 London airports and arrive 06:00 to 23:10 to 3 Seattle airports. Average flight time is 9h 50m.

  • The fastest flight 9h 45m
  • Average flight time 9h 50m
  • The earliest flight 06:00
  • The latest flight 23:10
  • Distance 4794 ml

The cheapest months to travel to Seattle are august (from 361 $), may (from 393 $), june (from 396 $).

The most expensive months are november (from 868 $), february (from 794 $), december (from 794 $).

What is the lowest airfare London to Seattle?

The cheapest plane ticket found by our users is $270. This airfare is for economy class on one-way W46004 flight by Aero Services Executive for August 28, 2025 which leaves Gatwick in London at 21:20 am and arrives at Seattle Seattle-Tacoma Intl at 08:53.

Economy class
$270
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Business class
?
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First class
?
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Popular Airlines on the Route

The flight London — Seattle is served by 37 regular airlines and 10 low-cost airlines. Most of the flights on this route are operated by British Airways - 97 departures per week at the price of from $ 369 . And the most expensive tickets are offered by SAS airline - from $ 1769.

Direct flights

There are 13 nonstop flights on the route. The fastest direct flight is BA53 by British Airways takes 9h 45m and the cheapest is W46004 by Aero Services Executive for $379.

  • from $379
    Find
  • KL - KLM
    from $441
    Find
  • EI - Aer Lingus
    from $813
    Find
  • AF - Air France
    from $441
    Find
  • AY - Finnair
    from $783
    Find
  • IB - Iberia
    from $413
    Find
  • VS - Virgin Atlantic Airways
    from $480
    Find
See more direct flights

Connecting Flights

There are 762 flights with layovers on the route. The fastest connecting flight is FR339 by Ryanair takes 12h 20m and the cheapest is W46004 by Aero Services Executive for $270.

  • from $369
    Find
  • W9 - Wizz Air UK
    from $521
    Find
  • VY - Vueling
    from $315
    Find
  • FI - Icelandair
    from $366
    Find
  • DN - Senegal Airlines
    from $511
    Find
  • FR - Ryanair
    from $378
    Find
  • LX - SWISS International Air Lines
    from $378
    Find
  • A1 - G2 Switch Works
    from $603
    Find
  • A3 - Aegean Airlines
    from $504
    Find
  • DY - Norwegian
    from $391
    Find
  • Z0 - Z0
    from $276
    Find
  • SK - SAS
    from $369
    Find
See more connecting flights

Airports

You can fly from London to Seattle from 10 airports (London City, London-Waterloo, Heathrow, Luton, British Rail Terminal, London Biggin Hill, Stansted, Gatwick, Ebbsfleet International Rail St, Stratford International Rail St).

London airports

  • London City-LCY
    from $449
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  • London-Waterloo-QQW
    Find
  • Heathrow-LHR
    from $365
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  • Luton-LTN
    from $373
    Find
  • British Rail Terminal-ZLX
    Find
  • London Biggin Hill-BQH
    Find
  • Stansted-STN
    from $374
    Find
  • Gatwick-LGW
    from $270
    Find
  • Ebbsfleet International Rail St-XQE
    Find
  • Stratford International Rail St-XOF
    Find

Seattle airports

  • Boeing Field International Airport-BFI
    Find
  • Seattle-Tacoma Intl-SEA
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  • Kenmore Air Harbor SPB-LKE
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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