Find Deals on Flights from Seattle/Tacoma Intl to London Airport (SEA - YXU)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Seattle/Tacoma Intl to London Airport

(Round-trip)
Depart: Thu Mar 2 2017 Return: Mon Mar 6 2017 Trip spans 5 days
WestJet
WestJet
SEA
4:35a
YXU
11:58a
7h 23m
1 stop
YXU
1:45a
SEA
12:05p
10h 20m
1 stop
Depart: Thu Mar 23 2017 Return: Sun Mar 26 2017 Trip spans 4 days
Major Airline
Major Airline
SEA
1:00a
YXU
1:59a
0h 59m
2 stops
YXU
1:00a
SEA
7:59a
6h 59m
2 stops
Depart: Sat Dec 17 2016 Return: Tue Jan 10 2017 Trip spans 25 days
Delta
Delta
SEA
7:30p
YXU
6:31a
11h 01m
2 stops
YXU
10:05a
SEA
7:53p
9h 48m
2 stops
Depart: Fri Dec 30 2016 Return: Sat Dec 31 2016 Trip spans 2 days
$1044
Select
Air Canada
Air Canada
SEA
3:10a
YXU
12:12p
9h 02m
1 stop
YXU
1:15a
SEA
8:34a
7h 19m
1 stop
Depart: Sat Mar 4 2017 Return: Mon Mar 6 2017 Trip spans 3 days
WestJet
WestJet
SEA
4:35a
YXU
11:58a
7h 23m
1 stop
YXU
1:45a
SEA
12:05p
10h 20m
1 stop
Depart: Fri Mar 3 2017 Return: Mon Mar 6 2017 Trip spans 4 days
WestJet
WestJet
SEA
4:35a
YXU
11:58a
7h 23m
1 stop
YXU
1:45a
SEA
12:05p
10h 20m
1 stop
Depart: Fri Dec 9 2016 Return: Sun Dec 11 2016 Trip spans 3 days
WestJet
WestJet
SEA
2:40a
YXU
11:59a
9h 19m
2 stops
YXU
1:45a
SEA
6:03p
16h 18m
2 stops
Depart: Sat Dec 10 2016 Return: Mon Dec 12 2016 Trip spans 3 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:22p
10h 37m
1 stop
Depart: Fri Dec 16 2016 Return: Mon Jan 9 2017 Trip spans 25 days
$1045
Select
Delta
Delta
SEA
7:30p
YXU
6:31a
11h 01m
2 stops
YXU
10:05a
SEA
7:53p
9h 48m
2 stops
Depart: Sun Dec 11 2016 Return: Mon Dec 12 2016 Trip spans 2 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:22p
10h 37m
1 stop
Depart: Wed Dec 28 2016 Return: Thu Dec 29 2016 Trip spans 2 days
$1061
Select
Air Canada
Air Canada
SEA
3:10a
YXU
12:12p
9h 02m
1 stop
YXU
10:35a
SEA
7:24p
8h 49m
1 stop
Depart: Thu Dec 29 2016 Return: Fri Dec 30 2016 Trip spans 2 days
$1093
Select
Air Canada
Air Canada
SEA
3:10a
YXU
10:48a
7h 38m
1 stop
YXU
1:15a
SEA
8:34a
7h 19m
1 stop
Depart: Wed Dec 7 2016 Return: Sat Dec 10 2016 Trip spans 4 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:20p
10h 35m
1 stop
Depart: Thu Dec 8 2016 Return: Sat Dec 10 2016 Trip spans 3 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:20p
10h 35m
1 stop
Depart: Mon Dec 12 2016 Return: Tue Dec 13 2016 Trip spans 2 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:22p
10h 37m
1 stop
Depart: Tue Dec 6 2016 Return: Sat Dec 10 2016 Trip spans 5 days
WestJet
WestJet
SEA
4:45a
YXU
11:59a
7h 14m
1 stop
YXU
1:45a
SEA
12:20p
10h 35m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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Airports
Origin

Seattle
$615
Destination

London
$615