


Find cheap one-way flights from Seattle to London starting at US$173.
Discover our range of affordable one-way and round-trip flights from Seattle to London and kick-start your next adventure today!
- One way
- Round-trip
- Cheapest nonstopSEA19:059h 35mNonstopLHR12:40Sun, Feb 23|Seattle - London|Air FranceUS$356US$47625% OFF25% OFFUS$476US$356
- SEA18:509h 25mNonstopLHR12:15Sun, Feb 23|Seattle - London|IberiaUS$357US$47625% OFF25% OFFUS$476US$357
- SEA23:3022h 25m1 stopLHR05:55Mon, Feb 17|Seattle - London|Alaska AirlinesUS$173US$47664% OFF64% OFFUS$476US$173
- SEA23:4822h 7m1 stopLHR05:55Mon, Feb 17|Seattle - London|Jetblue AirwaysUS$180US$180
- SEA15:1514h 35m1 stopLHR12:50Tue, Mar 11|Seattle - London|WestJetUS$204US$204
- SEA15:1513h 35m1 stopLHR12:50Wed, Mar 5|Seattle - London|WestJetUS$206US$206
- SEA15:1513h 35m1 stopLHR12:50Thu, Feb 27|Seattle - London|WestJetUS$209US$209
- SEA15:1513h 35m1 stopLHR12:50Fri, Feb 21|Seattle - London|WestJetUS$210US$210
- SEA15:1514h 35m1 stopLHR12:50Sun, Mar 9|Seattle - London|WestJetUS$211US$211
- SEA15:1514h 35m1 stopLHR12:50Mon, Mar 17|Seattle - London|WestJetUS$216US$216
- SEA01:00 pm3h 5mNonstopLON02:00 pmSat, Feb 15|Seattle - London|Air FranceFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Seattle to London Flight time & Schedules
DL562
Delta Air Lines
08:20
SEA
16:16
ATL
SMTWTFSVS104
Virgin Atlantic
19:55
ATL
07:50
LHR
SMTWTFSDL536
Delta Air Lines
09:25
SEA
14:45
MSP
SMTWTFSDL010
Delta Air Lines
22:10
MSP
12:15
LHR
SMTWTFSVS1913
Virgin Atlantic
13:30
SEA
16:40
SLC
SMTWTFSVS4020
Virgin Atlantic
17:15
SLC
10:00
LHR
SMT-TF-VS1582
Virgin Atlantic
14:55
SEA
20:25
MSP
SMTWTFSVS4040
Virgin Atlantic
22:10
MSP
12:15
LHR
SMTWTFSWS3613
WestJet
15:15
SEA
18:07
YYC
-----F-WS018
WestJet
20:35
YYC
12:05
LHR
SMTWTFSWS1553
WestJet
15:15
SEA
17:55
YYC
SM-WT-SWS018
WestJet
20:35
YYC
12:05
LHR
SMTWTFSFI680
Icelandair
15:35
SEA
06:15
KEF
SMTWTFSFI470
Icelandair
07:40
KEF
10:55
LGW
S-TWTFSFI680
Icelandair
15:35
SEA
06:15
KEF
SMTWTFSFI450
Icelandair
07:35
KEF
10:50
LHR
SMTWTFSAY5448
Finnair
19:50
SEA
12:15
LHR
SMTWTFSIB3506
IBERIA
19:50
SEA
12:15
LHR
SMTWTFS
When is the cheapest time to book flights from Seattle to London?
These price trend charts carefully monitor and predict how flight prices from Seattle to London will change. Keep a close eye on them to understand when the best time to buy your tickets is.
Cheapest airlines flights from Seattle to London
Frequently Asked Questions
How to find a cheap flight from Seattle to London
Seattle to London Flight Information
Cheapest nonstop flight price | $173 |
---|---|
Cheapest round-trip ticket price | $545 |
Off-season for travel | December |
Peak season for travel | May |
Flight distance | 7,711.56 km |
Average flight time | 9 hours 32 minutes |
Popular airline | Finnair |
Plan Your Trip Around London
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