Alaska Airlines Seattle to London Flights

Cheapflightsplus.com will find cheap Alaska Airlines flights from Seattle to London. Compare airline ticket prices and book air tickets starting from $262 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — London by Alaska Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in november: one-way - $262, two-way – $449.
Direct flights
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Below is a detailed 2024 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
1:45 pm — 7:10 am
+1 day
1:45 pm — 7:10 am AS5272 Alaska Airlines
Seattle — London
9h 25m
Find flight
from$604
6:50 pm — 12:15 pm
+1 day
6:50 pm — 12:15 pm AS5270 Alaska Airlines
Seattle — London
9h 25m
Find flight
from$535
3:36 pm — 12:50 pm
+1 day
3:36 pm — 6:10 pm AS2226 Alaska Airlines
Seattle — Calgary
3h 1m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
13h 14m
including layover
Find flight
from$343
3:45 pm — 7:55 am
+2 days
3:40 pm — 11:59 pm AS460 Alaska Airlines
Seattle — Boston
20h 11m stop
8:10 pm — 7:55 am VS158 Virgin Atlantic Airways
Boston — London
32h 10m
including layover
Find flight
from$341
4:32 pm — 10:35 am
+2 days
4:32 pm — 7:04 pm AS734 Alaska Airlines
Seattle — Las Vegas
21h 41m stop
4:45 pm — 10:35 am Z0778 Z0
Las Vegas — London
34h 3m
including layover
Find flight
from$339
6:15 am — 6:00 am
+1 day
6:05 am — 2:29 pm AS280 Alaska Airlines
Seattle — New York
3h 42m stop
6:15 pm — 6:00 am Z0702 Z0
New York — London
15h 45m
including layover
Find flight
from$331
6:31 pm — 10:35 am
+2 days
6:28 pm — 9:00 pm AS339 Alaska Airlines
Seattle — Las Vegas
19h 45m stop
4:45 pm — 10:35 am Z0778 Z0
Las Vegas — London
32h 4m
including layover
Find flight
from$262
10:51 pm — 10:35 am
+3 days
10:51 pm — 11:43 pm AS957 Alaska Airlines
Seattle — Portland
14h 44m stop
2:27 pm — 4:40 pm AS778 Alaska Airlines
Portland — Las Vegas
24h 5m stop
4:45 pm — 10:35 am Z0778 Z0
Las Vegas — London
51h 44m
including layover
Find flight
from$327
10:51 pm — 12:50 pm
+2 days
10:51 pm — 11:55 pm AS3306 Alaska Airlines
Seattle — Vancouver
16h 50m stop
4:45 pm — 7:16 pm WS120 WestJet
Vancouver — Calgary
1h 54m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
29h 59m
including layover
Find flight
from$332
11:23 am — 12:50 pm
+1 day
11:23 am — 12:29 pm AS3334 Alaska Airlines
Seattle — Vancouver
5h 16m stop
5:45 pm — 8:16 pm WS122 WestJet
Vancouver — Calgary
54m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
17h 27m
including layover
Find flight
from$332
11:23 am — 12:50 pm
+1 day
11:23 am — 12:29 pm AS3334 Alaska Airlines
Seattle — Vancouver
3h 11m stop
3:40 pm — 6:11 pm WS118 WestJet
Vancouver — Calgary
2h 59m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
17h 27m
including layover
Find flight
from$340
1:59 pm — 2:25 pm
+2 days
1:59 pm — 4:16 pm AS1304 Alaska Airlines
Seattle — San Francisco
3h 39m stop
7:55 pm — 3:30 pm BF711 Bluebird Cargo
San Francisco — Paris
22h 40m stop
2:10 pm — 2:25 pm U22440 EasyJet
Paris — London
40h 26m
including layover
Find flight
from$518
1:59 pm — 10:15 am
+2 days
1:59 pm — 4:16 pm AS1304 Alaska Airlines
Seattle — San Francisco
3h 39m stop
7:55 pm — 3:30 pm BF711 Bluebird Cargo
San Francisco — Paris
18h 25m stop
9:55 am — 10:15 am U22436 EasyJet
Paris — London
36h 16m
including layover
Find flight
from$523
2:40 pm — 11:00 am
+2 days
2:40 pm — 10:59 pm AS16 Alaska Airlines
Seattle — New York
17h 46m stop
4:45 pm — 7:05 am AZ609 Alitalia
New York — Rome
2h 25m stop
9:30 am — 11:00 am AZ212 Alitalia
Rome — London
36h 20m
including layover
Find flight
from$467
4:05 pm — 1:20 pm
+2 days
4:05 pm — 11:59 pm AS348 Alaska Airlines
Seattle — Baltimore
18h 11m stop
6:10 pm — 5:00 am OG102 Air Onix
Baltimore — Reykjavik
5h 20m stop
10:20 am — 1:20 pm U22644 EasyJet
Reykjavik — London
37h 15m
including layover
Find flight
from$532
5:55 pm — 12:50 pm
+3 days
5:55 pm — 9:43 pm AS632 Alaska Airlines
Seattle — Phoenix
23h 22m stop
9:05 pm — 0:16 am WS1539 WestJet
Phoenix — Calgary
20h 54m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
58h 55m
including layover
Find flight
from$297
7:00 am — 11:05 pm
+1 day
7:00 am — 3:13 pm AS306 Alaska Airlines
Seattle — Boston
3h 7m stop
6:20 pm — 4:45 am OG112 Air Onix
Boston — Reykjavik
15h 5m stop
7:50 pm — 11:05 pm U28844 EasyJet
Reykjavik — London
32h 5m
including layover
Find flight
from$327
7:58 pm — 12:50 pm
+2 days
7:58 pm — 10:43 pm AS1223 Alaska Airlines
Seattle — Los Angeles
8h 17m stop
7:00 am — 11:13 am WS1513 WestJet
Los Angeles — Calgary
9h 57m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
32h 52m
including layover
Find flight
from$302
8:10 pm — 12:50 pm
+2 days
8:10 pm — 11:59 pm AS644 Alaska Airlines
Seattle — Phoenix
12h 6m stop
12:05 pm — 3:22 pm WS1403 WestJet
Phoenix — Calgary
5h 48m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
32h 40m
including layover
Find flight
from$297
8:31 am — 12:50 pm
+1 day
8:31 am — 11:06 am AS612 Alaska Airlines
Seattle — Las Vegas
2h 14m stop
1:20 pm — 5:20 pm WS1401 WestJet
Las Vegas — Calgary
3h 50m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
20h 19m
including layover
Find flight
from$330
9:01 am — 9:40 pm
+1 day
9:01 am — 5:29 pm AS398 Alaska Airlines
Seattle — Newark
5h 31m stop
11:00 pm — 12:00 pm BF721 Bluebird Cargo
Newark — Paris
9h 25m stop
9:25 pm — 9:40 pm U22442 EasyJet
Paris — London
28h 39m
including layover
Find flight
from$343
9:16 pm — 10:35 am
+2 days
9:16 pm — 11:59 pm AS1164 Alaska Airlines
Seattle — San Diego
8h 21m stop
8:20 am — 9:45 am AS3342 Alaska Airlines
San Diego — Las Vegas
7h stop
4:45 pm — 10:35 am Z0778 Z0
Las Vegas — London
29h 19m
including layover
Find flight
from$328
*Departure and arrival times are local. Last updated on 11/18/2024

Flight Information

There are 2 flights by Alaska Airlines from Seattle to London every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at Gatwick, London City, Heathrow, Luton, Stansted, Stratford International Rail St, Ebbsfleet International Rail St, London Biggin Hill, London-Waterloo, British Rail Terminal.

Departures start from 10:00 am to 9:59 pm. Nonstop flight is 9h 25m. The time difference between Seattle and London is 8h.

  • The fastest flight 9h 25m
  • Average flight time 9h 25m
  • The earliest flight 10:00 am
  • The latest flight 9:59 pm
  • Distance 4794 ml

The cheapest months for traveling to London are january (from 262 $), february (from 297 $), november (from 317 $).

The most expensive and popular months are december (from 327 $), november (from 317 $), february (from 297 $).

The cheapest flight by Alaska Airlines that our users were able to find is $262. This airfare is economy class on one-way AS339 flight for January 22, 2025 leaving Seattle-Tacoma Intl in Seattle at 6:31 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Alaska Airlines there are other 22 airline carriers between Seattle and London. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to London.

Nonstop flights

There are 9 direct flights every day from Seattle. Airlines and fares are below:

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Connecting Flights

List of flights with layovers (1 and more stops):

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How to book an air 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 airfare.
  • 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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