Cheap Flights from Seattle, WA to London from $217
On Cheapflightsplus.com you will find 7 direct and 184 connecting flights from Seattle to London. You can compare airfare deals from 17 airlines and multiple travel sites from $217, book and save on cheap plane tickets and last minute offers. Also check out SEA-LON flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Seattle to London Flight Deals
Best Flights from Seattle to London Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $456 | 13:45 Seattle Seattle-Tacoma Intl | 07:10+1 день London Heathrow | 9h 25m | British Airways | BA52 |
from $497 | 18:50 Seattle Seattle-Tacoma Intl | 12:15+1 день London Heathrow | 9h 25m | Iberia | IB3506 |
from $606 | 18:50 Seattle Seattle-Tacoma Intl | 12:15+1 день London Heathrow | 9h 25m | Alaska Airlines | AS5270 |
from $623 | 13:45 Seattle Seattle-Tacoma Intl | 07:10+1 день London Heathrow | 9h 25m | Finnair | AY5450 |
from $270 | 14:35 Seattle Seattle-Tacoma Intl | 10:50+1 день London Heathrow | 12h 15m layover 1h 20m - Reykjavik | Icelandair | FI680 FI450 |
from $364 | 06:15 Seattle Seattle-Tacoma Intl | 06:00+1 день London Gatwick | 15h 45m layover 3h 42m - New York | Alaska Airlines | AS280 Z0702 |
from $393 | 15:15 Seattle Seattle-Tacoma Intl | 12:50+1 день London Heathrow | 13h 35m layover 3h 15m - Calgary | WestJet | WS1553 WS18 |
from $217 | 07:25 Seattle Seattle-Tacoma Intl | 12:40+1 день London Heathrow | 21h 15m layover 1h 55m - Newark 4h 25m - Lisbon | TAP Portugal | TP8561 TP202 TP1352 |
from $326 | 19:51 Seattle Seattle-Tacoma Intl | 12:50+3 дня London Heathrow | 56h 59m layover 19h 56m - Las Vegas 22h 45m - Calgary | Frontier Airlines | F94830 WS1585 WS18 |
from $348 | 11:30 Seattle Seattle-Tacoma Intl | 12:50+1 день London Heathrow | 17h 20m layover 1h 4m - Kelowna 5h 17m - Calgary | WestJet | WS3731 WS3810 WS18 |
from $368 | 09:37 Seattle Seattle-Tacoma Intl | 10:50+1 день London Heathrow | 17h 13m layover 2h 15m - Denver 1h 30m - Reykjavik | Frontier Airlines | F93406 FI670 FI450 |
from $368 | 09:37 Seattle Seattle-Tacoma Intl | 10:55+1 день London Gatwick | 17h 18m layover 2h 15m - Denver 1h 35m - Reykjavik | Frontier Airlines | F93406 FI670 FI470 |
from $368 | 22:08 Seattle Seattle-Tacoma Intl | 10:55+2 дня London Gatwick | 28h 47m layover 13h 49m - Denver 1h 35m - Reykjavik | Frontier Airlines | F91176 FI670 FI470 |
from $369 | 22:08 Seattle Seattle-Tacoma Intl | 10:50+2 дня London Heathrow | 28h 42m layover 13h 49m - Denver 1h 30m - Reykjavik | Frontier Airlines | F91176 FI670 FI450 |
from $377 | 22:47 Seattle Seattle-Tacoma Intl | 12:50+3 дня London Heathrow | 54h 3m layover 19h 43m - Vancouver 23h 4m - Calgary | Alaska Airlines | AS3307 WS126 WS18 |
from $412 | 07:55 Seattle Seattle-Tacoma Intl | 10:50+1 день London Heathrow | 18h 55m layover 3h 58m - Denver 1h 30m - Reykjavik | Alaska Airlines | AS682 FI670 FI450 |
Flight Schedule Seattle (Washington) to London
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
13:45 — 07:10
+1 day
|
13:45 — 07:10
BA52
British Airways
Seattle — London
|
9h 25m |
Find flight
from$456 |
|
13:45 — 07:10
+1 day
|
13:45 — 07:10
AS5272
Alaska Airlines
Seattle — London
|
9h 25m |
Find flight
from$608 |
|
13:45 — 07:10
+1 day
|
13:45 — 07:10
AY5450
Finnair
Seattle — London
|
9h 25m |
Find flight
from$623 |
|
18:50 — 12:15
+1 day
|
18:50 — 12:15
BA48
British Airways
Seattle — London
|
9h 25m |
Find flight
from$456 |
|
18:50 — 12:15
+1 day
|
18:50 — 12:15
IB3506
Iberia
Seattle — London
|
9h 25m |
Find flight
from$497 |
|
18:50 — 12:15
+1 day
|
18:50 — 12:15
AS5270
Alaska Airlines
Seattle — London
|
9h 25m |
Find flight
from$606 |
|
18:50 — 12:15
+1 day
|
18:50 — 12:15
AY5448
Finnair
Seattle — London
|
9h 25m |
Find flight
from$623 |
|
06:15 — 06:00
+1 day
|
06:05 — 14:29
AS280
Alaska Airlines
Seattle — New York
3h 42m stop
18:15 — 06:00
Z0702
Z0
New York — London
|
15h 45m including layover |
Find flight
from$364 |
|
13:42 — 11:30
+1 day
|
13:35 — 19:39
BA5593
British Airways
Seattle — Chicago
2h 5m stop
21:45 — 11:30
BA296
British Airways
Chicago — London
|
13h 48m including layover |
Find flight
from$461 |
|
14:35 — 10:50
+1 day
|
14:30 — 06:10
FI680
Icelandair
Seattle — Reykjavik
1h 20m stop
07:40 — 10:50
FI450
Icelandair
Reykjavik — London
|
12h 15m including layover |
Find flight
from$270 |
|
15:15 — 12:50
+1 day
|
15:15 — 17:55
WS1553
WestJet
Seattle — Calgary
3h 15m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
13h 35m including layover |
Find flight
from$393 |
|
15:45 — 07:55
+2 days
|
15:40 — 23:59
AS460
Alaska Airlines
Seattle — Boston
20h 11m stop
20:10 — 07:55
VS158
Virgin Atlantic Airways
Boston — London
|
32h 10m including layover |
Find flight
from$455 |
|
05:45 — 07:10
+1 day
|
05:45 — 06:56
AC8801
Air Canada
Seattle — Vancouver
2h 28m stop
09:20 — 16:59
AC304
Air Canada
Vancouver — Montreal
2h 12m stop
19:15 — 07:10
AC866
Air Canada
Montreal — London
|
17h 25m including layover |
Find flight
from$476 |
|
05:45 — 09:20
+1 day
|
05:45 — 06:56
AC8801
Air Canada
Seattle — Vancouver
1h 18m stop
08:10 — 10:40
AC202
Air Canada
Vancouver — Calgary
6h 50m stop
17:30 — 09:20
AC850
Air Canada
Calgary — London
|
19h 35m including layover |
Find flight
from$476 |
|
06:15 — 07:20
+2 days
|
06:15 — 14:33
AS280
Alaska Airlines
Seattle — Newark
8h 27m stop
23:00 — 12:00
BF721
Bluebird Cargo
Newark — Paris
19h stop
07:00 — 07:20
U24639
EasyJet
Paris — London
|
41h 5m including layover |
Find flight
from$419 |
|
07:25 — 12:40
+1 day
|
07:12 — 15:32
TP8561
TAP Portugal
Seattle — Newark
1h 55m stop
17:45 — 05:55
TP202
TAP Portugal
Newark — Lisbon
4h 25m stop
09:45 — 12:40
TP1352
TAP Portugal
Lisbon — London
|
21h 15m including layover |
Find flight
from$217 |
|
07:25 — 22:40
+1 day
|
07:12 — 15:32
TP8561
TAP Portugal
Seattle — Newark
1h 55m stop
19:55 — 07:45
TP202
TAP Portugal
Newark — Lisbon
14h 25m stop
20:20 — 22:55
TP1366
TAP Portugal
Lisbon — London
|
31h 15m including layover |
Find flight
from$217 |
|
08:07 — 12:50
+1 day
|
08:07 — 11:00
AS2106
Alaska Airlines
Seattle — Edmonton
6h 59m stop
18:05 — 19:05
WS3352
WestJet
Edmonton — Calgary
2h 5m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
20h 43m including layover |
Find flight
from$450 |
|
08:55 — 10:55
+1 day
|
07:55 — 14:03
AS408
Alaska Airlines
Seattle — Chicago
3h 20m stop
18:30 — 06:40
FI852
Icelandair
Chicago — Reykjavik
1h stop
07:40 — 10:55
FI470
Icelandair
Reykjavik — London
|
18h including layover |
Find flight
from$461 |
|
09:37 — 10:50
+1 day
|
09:19 — 13:04
F93406
Frontier Airlines
Seattle — Denver
2h 15m stop
15:40 — 06:05
FI670
Icelandair
Denver — Reykjavik
1h 30m stop
07:35 — 10:50
FI450
Icelandair
Reykjavik — London
|
17h 13m including layover |
Find flight
from$368 |
|
09:37 — 10:55
+1 day
|
09:19 — 13:04
F93406
Frontier Airlines
Seattle — Denver
2h 15m stop
15:40 — 06:05
FI670
Icelandair
Denver — Reykjavik
1h 35m stop
07:40 — 10:55
FI470
Icelandair
Reykjavik — London
|
17h 18m including layover |
Find flight
from$368 |
|
10:11 — 14:25
+1 day
|
10:10 — 18:29
AS398
Alaska Airlines
Seattle — Newark
4h 31m stop
23:00 — 12:00
BF721
Bluebird Cargo
Newark — Paris
2h 10m stop
14:10 — 14:25
VY8960
Vueling
Paris — London
|
20h 14m including layover |
Find flight
from$450 |
|
10:35 — 12:50
+1 day
|
10:35 — 11:42
AC8803
Air Canada
Seattle — Vancouver
6h 3m stop
17:45 — 20:16
WS122
WestJet
Vancouver — Calgary
54m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
18h 15m including layover |
Find flight
from$464 |
|
11:30 — 12:50
+1 day
|
11:30 — 12:36
WS3731
WestJet
Seattle — Kelowna
1h 4m stop
13:40 — 15:53
WS3810
WestJet
Kelowna — Calgary
5h 17m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
17h 20m including layover |
Find flight
from$348 |
|
11:30 — 12:50
+1 day
|
11:30 — 12:36
WS3731
WestJet
Seattle — Kelowna
2h 44m stop
15:20 — 17:28
WS460
WestJet
Kelowna — Calgary
3h 42m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
17h 20m including layover |
Find flight
from$436 |
|
14:35 — 15:25
+1 day
|
14:35 — 06:15
FI680
Icelandair
Seattle — Reykjavik
1h 20m stop
07:35 — 09:55
FI430
Icelandair
Reykjavik — Glasgow
4h stop
14:45 — 16:15
U2866
EasyJet
Glasgow — London
|
16h 50m including layover |
Find flight
from$436 |
|
19:05 — 06:30
+2 days
|
19:05 — 20:12
AC8811
Air Canada
Seattle — Vancouver
3h 8m stop
23:20 — 06:52
AC126
Air Canada
Vancouver — Toronto
11h 18m stop
18:10 — 06:30
AC854
Air Canada
Toronto — London
|
27h 25m including layover |
Find flight
from$482 |
|
19:51 — 12:50
+3 days
|
19:51 — 22:34
F94830
Frontier Airlines
Seattle — Las Vegas
19h 56m stop
18:30 — 22:25
WS1585
WestJet
Las Vegas — Calgary
22h 45m stop
21:10 — 12:50
WS18
WestJet
Calgary — London
|
56h 59m including layover |
Find flight
from$326 |
|
22:08 — 10:55
+2 days
|
20:19 — 00:05
F91176
Frontier Airlines
Seattle — Denver
13h 49m stop
15:40 — 06:05
FI670
Icelandair
Denver — Reykjavik
1h 35m stop
07:40 — 10:55
FI470
Icelandair
Reykjavik — London
|
28h 47m including layover |
Find flight
from$368 |
|
22:08 — 10:50
+2 days
|
20:19 — 00:05
F91176
Frontier Airlines
Seattle — Denver
13h 49m stop
15:40 — 06:05
FI670
Icelandair
Denver — Reykjavik
1h 30m stop
07:35 — 10:50
FI450
Icelandair
Reykjavik — London
|
28h 42m including layover |
Find flight
from$369 |
|
23:59 — 10:55
+2 days
|
23:59 — 05:53
AS461
Alaska Airlines
Seattle — Chicago
12h 37m stop
18:30 — 06:40
FI852
Icelandair
Chicago — Reykjavik
1h stop
07:40 — 10:55
FI470
Icelandair
Reykjavik — London
|
26h 56m including layover |
Find flight
from$438 |
|
23:59 — 10:50
+2 days
|
23:59 — 05:53
AS461
Alaska Airlines
Seattle — Chicago
12h 37m stop
18:30 — 06:40
FI852
Icelandair
Chicago — Reykjavik
55m stop
07:35 — 10:50
FI450
Icelandair
Reykjavik — London
|
26h 51m including layover |
Find flight
from$439 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to London depends on and how to choose the most interesting flight option for you.
Distance between Seattle and London is 7714 miles. Time difference between the cities is 8h. Airplanes depart 05:02 to 23:59 from 3 Seattle airports and arrive 05:02 to 23:59 to 10 London airports. Average flight time is 9h 25m.
- The fastest flight 9h 25m
- Average flight time 9h 25m
- The earliest flight 05:02
- The latest flight 23:59
- Distance 4794 ml
The cheapest months to travel to London are january (from 212 $), february (from 217 $), november (from 226 $).
The most expensive months are december (from 294 $), november (from 226 $), february (from 217 $).
What is the lowest airfare Seattle to London?
The cheapest plane ticket found by our users is $217. This airfare is for economy class on one-way TP8561 flight by TAP Portugal for February 10, 2025 which leaves Seattle-Tacoma Intl in Seattle at 07:25 am and arrives at London Heathrow at 22:40.
Popular Airlines on the Route
The flight Seattle — London is served by 17 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Air Canada - 24 departures per week at the price of from $ 464 . And the most expensive tickets are offered by All Nippon Airways airline - from $ 11098.
Direct flights
There are 7 nonstop flights on the route. The fastest direct flight is BA52 by British Airways takes 9h 25m and the cheapest is TP8561 by TAP Portugal for $456.
- from $606Find
- AY - Finnairfrom $623Find
- IB - Iberiafrom $497Find
- BA - British Airwaysfrom $456Find
Connecting Flights
There are 184 flights with layovers on the route. The fastest connecting flight is BA6148 by British Airways takes 11h 35m and the cheapest is TP8561 by TAP Portugal for $217.
- from $464Find
- from $557Find
- from $515Find
- from $364Find
- from $474Find
- FI - Icelandairfrom $270Find
- OS - Austrian Airlinesfrom $595Find
- OZ - Asiana Airlinesfrom $6205Find
- F9 - Frontier Airlinesfrom $326Find
- TK - Turkish Airlinesfrom $903Find
- KE - Korean Airfrom $3471Find
- NH - All Nippon Airwaysfrom $11098Find
Airports
You can fly from Seattle to London from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAfrom $217Find
- Kenmore Air Harbor SPB-LKEFind
London airports
- London City-LCYFind
- London-Waterloo-QQWFind
- Heathrow-LHRFind
- Luton-LTNFind
- British Rail Terminal-ZLXFind
- London Biggin Hill-BQHFind
- Stansted-STNFind
- Gatwick-LGWFind
- Ebbsfleet International Rail St-XQEFind
- Stratford International Rail St-XOFFind
Airplanes
There are flights to London from Seattle by 17 airlines that use 2 aircraft brands. They range from huge modern airplanes to small-sized.
- Boeing 737-800from $217Find
- Boeing 757-200 (winglets)from $270Find
Top Domestic Destinations from Seattle
You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.
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Top International Destinations from Seattle
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.
- from $60Find
- from $56Find
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How to book a plane 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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