Return flight: Seattle – London

On Cheapflightsplus.com you will find 7 direct and 136 connecting flights from London to Seattle. You can compare airfare deals from 25 airlines and multiple travel sites from $360, 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

Cheapest flights in

september

: $ 360 (one-way), $ 617 (round-trip).
One-way
Two-way
October
400 $
November
December
January
February
March
April
May
June
July
August
September
October
600 $
November
December
January
February
March
April
May
June
July
August
September

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 22:15 from 10 London airports and arrive 06:00 to 22:15 to 3 Seattle airports. Average flight time is 9h 45m.

  • The fastest flight 9h 45m
  • Average flight time 9h 45m
  • Distance 4794 ml

Best Flights from London to Seattle Today

Take a look at the list of non stop flights and flights with layovers from London to Seattle with the lowest price of $360. The fastest direct flight takes 9h 45m and the fastest connecting – 12h 25m.
09:50 — 11:35
9h 45m flight time
direct
Find Flight
from$524
09:50 — 11:35
9h 45m flight time
direct
Find Flight
from$524
09:50 — 11:35
9h 45m flight time
direct
Find Flight
from$983
13:05 — 19:54+1 день
38h 49m flight time
24h 45m stop
Find Flight
from$433
13:25 — 17:50
12h 25m flight time
1h 20m stop
Find Flight
from$540
21:20 — 21:36+1 день
32h 16m flight time
14h 10m stop
Find Flight
from$360
19:40 — 08:54+2 дня
45h 14m flight time
29h 30m stop
Find Flight
from$379
Show All Flights
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on October 02, 2025

The cheapest months to travel to Seattle are august (from 360 $), september (from 379 $), june (from 440 $).

The most expensive months are november (from 825 $), february (from 755 $), december (from 755 $).

What is the lowest airfare London to Seattle?

The cheapest plane ticket found by our users is $360. This airfare is for economy class on one-way W46004 flight by Aero Services Executive for September 18, 2025 which leaves Gatwick in London at 21:20 am and arrives at Seattle Seattle-Tacoma Intl at 21:36.

Economy class
$360
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Business class
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First class
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Flight Schedule London to Seattle (Washington)

09:50 — 11:35
9h 45m flight time
Find flight
from$524
London — Seattle
BA53 British Airways
09:50 — 11:35
9h 45m flight time
Find flight
from$524
London — Seattle
IB3509 Iberia
09:50 — 11:35
9h 45m flight time
Find flight
from$983
London — Seattle
AY5451 Finnair
09:50 — 11:35
9h 45m flight time
Find flight
from$1030
London — Seattle
EI8753 Aer Lingus
13:55 — 19:32+1day
37h 37m flight time
Find flight
from$416
13:55 — 19:45 London — Athens
W95747 Wizz Air UK
14h stop
09:45 — 13:15 Athens — Los Angeles
N0511 N0
3h 26m stop
16:41 — 19:32 Los Angeles — Seattle
F91177 Frontier Airlines
14:40 — 20:35+1day
37h 55m flight time
Find flight
from$396
14:40 — 17:05 London — Paris
VY8947 Vueling
3h 10m stop
20:15 — 22:15 Paris — Newark
N0301 N0
19h 15m stop
17:30 — 20:35 Newark — Seattle
HA4901 Hawaiian Airlines
14:40 — 19:54+1day
37h 14m flight time
Find flight
from$417
14:40 — 17:05 London — Paris
VY8947 Vueling
3h 10m stop
20:15 — 22:15 Paris — New York
N0301 N0
18h 25m stop
16:40 — 19:54 New York — Seattle
HA4926 Hawaiian Airlines
16:30 — 18:20
9h 50m flight time
Find flight
from$524
London — Seattle
BA49 British Airways
16:30 — 18:20
9h 50m flight time
Find flight
from$985
London — Seattle
IB3507 Iberia
16:30 — 18:20
9h 50m flight time
Find flight
from$1046
London — Seattle
AY5449 Finnair
19:40 — 08:54+2days
45h 14m flight time
Find flight
from$379
19:40 — 22:05 London — Paris
VY8945 Vueling
18h 35m stop
16:40 — 19:05 Paris — Los Angeles
N0311 N0
10h 55m stop
06:00 — 08:54 Los Angeles — Seattle
HA6202 Hawaiian Airlines
19:40 — 21:18+2days
57h 38m flight time
Find flight
from$402
19:40 — 22:05 London — Paris
VY8945 Vueling
20h 45m stop
18:50 — 21:00 Paris — Newark
BF720 Bluebird Cargo
21h 13m stop
18:13 — 21:18 Newark — Seattle
HA4901 Hawaiian Airlines
19:40 — 08:54+2days
45h 14m flight time
Find flight
from$409
19:40 — 22:05 London — Paris
VY8945 Vueling
16h 45m stop
14:50 — 17:30 Paris — Los Angeles
BF730 Bluebird Cargo
12h 30m stop
06:00 — 08:54 Los Angeles — Seattle
HA6202 Hawaiian Airlines
21:20 — 21:36+1day
32h 16m flight time
Find flight
from$360
21:20 — 00:55 London — Rome
W46004 Aero Services Executive
10h 40m stop
11:35 — 15:15 Rome — Los Angeles
N0411 N0
3h 30m stop
18:45 — 21:36 Los Angeles — Seattle
HA6198 Hawaiian Airlines
21:20 — 21:18+2days
55h 58m flight time
Find flight
from$384
21:20 — 00:55 London — Rome
W46004 Aero Services Executive
18h 10m stop
19:05 — 22:30 Rome — Newark
N0401 N0
19h 43m stop
18:13 — 21:18 Newark — Seattle
HA4901 Hawaiian Airlines
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 and arrival times - local. Updated on October 2, 2025.

Popular Airlines on the Route

The flight London — Seattle is served by 25 regular airlines and 8 low-cost airlines. Most of the flights on this route are operated by Wizz Air UK - 3 departures per week at the price of from $416. And the most expensive tickets are offered by Lufthansa airline - from $1128.

Direct flights

There are 7 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 $524.
  • EI - Aer Lingus
    from $1030
  • AY - Finnair
    from $983
  • IB - Iberia
    from $524
  • BA - British Airways
    from $524
See more direct flights

Connecting Flights

There are 136 flights with layovers on the route. The fastest connecting flight is EI163 by Aer Lingus takes 12h 25m and the cheapest is W46004 by Aero Services Executive for $360.
  • W9 - Wizz Air UK
    from $416
  • VY - Vueling
    from $379
  • FI - Icelandair
    from $653
  • EI - Aer Lingus
    from $540
  • AF - Air France
    from $708
  • FR - Ryanair
    from $608
  • UA - United Airlines
    from $742
  • A3 - Aegean Airlines
    from $495
  • EW - Eurowings AG
    from $650
  • D8 - Djibouti Airlines
    from $495
  • DY - Norwegian
    from $621
  • Z0 - Z0
    from $424
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 $612
  • London-Waterloo-QQW
  • Heathrow-LHR
    from $495
  • Luton-LTN
    from $493
  • British Rail Terminal-ZLX
  • London Biggin Hill-BQH
  • Stansted-STN
    from $587
  • Gatwick-LGW
    from $360
  • Ebbsfleet International Rail St-XQE
  • Stratford International Rail St-XOF

Seattle airports

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

Airplanes

There are flights to Seattle from London by 25 airlines that use 1 aircraft brands. They range from huge modern airplanes to small-sized.

  • Boeing 767-300 (winglets)
    from $657

Top International Destinations from London

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

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.

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