Air Canada Seattle to London Flights

Cheapflightsplus.com will find cheap Air Canada flights from Seattle to London. Compare airline ticket prices and book air tickets starting from $304 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Air Canada, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — London by Air Canada

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 december: one-way - $304, two-way – $521.
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Below is a detailed 2025 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
6:05 am — 11:50 am
+1 day
6:05 am — 1:50 pm AC540 Air Canada
Seattle — Toronto
9h 50m stop
11:40 pm — 11:50 am AC858 Air Canada
Toronto — London
21h 45m
including layover
Find flight
from$432
6:05 am — 8:30 am
+1 day
6:05 am — 1:50 pm AC540 Air Canada
Seattle — Toronto
6h 20m stop
8:10 pm — 8:30 am AC856 Air Canada
Toronto — London
18h 25m
including layover
Find flight
from$432
10:35 am — 12:50 pm
+1 day
10:35 am — 11:42 am AC8803 Air Canada
Seattle — Vancouver
1h 28m stop
1:10 pm — 3:40 pm AC212 Air Canada
Vancouver — Calgary
5h 30m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
18h 15m
including layover
Find flight
from$304
10:35 am — 12:50 pm
+1 day
10:35 am — 11:42 am AC8803 Air Canada
Seattle — Vancouver
3h 58m stop
3:40 pm — 6:10 pm WS118 WestJet
Vancouver — Calgary
3h stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
18h 15m
including layover
Find flight
from$380
3:05 pm — 12:50 pm
+1 day
3:05 pm — 4:15 pm AC8807 Air Canada
Seattle — Vancouver
1h 33m stop
5:45 pm — 8:16 pm WS122 WestJet
Vancouver — Calgary
54m stop
9:10 pm — 12:50 pm WS18 WestJet
Calgary — London
13h 45m
including layover
Find flight
from$384
5:45 am — 9:20 am
+1 day
5:45 am — 6:56 am AC8801 Air Canada
Seattle — Vancouver
2h 38m stop
9:30 am — 11:55 am AC7766 Air Canada
Vancouver — Calgary
5h 35m stop
5:30 pm — 9:20 am AC850 Air Canada
Calgary — London
19h 35m
including layover
Find flight
from$426
5:45 am — 9:20 am
+1 day
5:45 am — 6:56 am AC8801 Air Canada
Seattle — Vancouver
1h 18m stop
8:10 am — 10:40 am AC202 Air Canada
Vancouver — Calgary
6h 50m stop
5:30 pm — 9:20 am AC850 Air Canada
Calgary — London
19h 35m
including layover
Find flight
from$426
7:05 pm — 6:30 am
+2 days
7:05 pm — 8:12 pm AC8811 Air Canada
Seattle — Vancouver
3h 8m stop
11:20 pm — 6:52 am AC126 Air Canada
Vancouver — Toronto
11h 18m stop
6:10 pm — 6:30 am AC854 Air Canada
Toronto — London
27h 25m
including layover
Find flight
from$432
7:05 pm — 6:30 am
+2 days
7:05 pm — 8:12 pm AC8811 Air Canada
Seattle — Vancouver
12h 58m stop
9:10 am — 4:39 pm AC34 Air Canada
Vancouver — Toronto
1h 31m stop
6:10 pm — 6:30 am AC854 Air Canada
Toronto — London
27h 25m
including layover
Find flight
from$454
*Departure and arrival times are local. Last updated on 12/21/2024

Flight Information

There are 32 flights by Air Canada 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 10:35 am to 7:05 pm. Nonstop flight is 13h 45m. The time difference between Seattle and London is 8h.

  • The fastest flight 13h 45m
  • Average flight time 18h 45m
  • The earliest flight 10:35 am
  • The latest flight 7:05 pm
  • Distance 4794 ml

The cheapest months for traveling to London are january (from 304 $), february (from 380 $), december (from 438 $).

The most expensive and popular months are november (from 472 $), december (from 438 $), february (from 380 $).

The cheapest flight by Air Canada that our users were able to find is $304. This airfare is economy class on one-way AC8803 flight for January 22, 2025 leaving Seattle-Tacoma Intl in Seattle at 10:35 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Air Canada there are other 20 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 8 direct flights every day from Seattle. Airlines and fares are below:

  • from $539
    Find
  • AY - Finnair
    from $562
    Find
  • IB - Iberia
    from $438
    Find
  • BA - British Airways
    from $409
    Find
See more direct flights

Connecting Flights

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

See more connecting flights

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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