Find Cheap 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
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: Tue Jul 11 2017 Return: Thu Jul 20 2017 Trip spans 10 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Wed Jul 19 2017 Return: Tue Aug 8 2017 Trip spans 21 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: Sun Jul 2 2017 Return: Tue Jul 18 2017 Trip spans 17 days
WestJet
WestJet
SEA
6:40p
YXU
9:35a
14h 55m
1 stop
YXU
4:47p
SEA
7:38a
14h 51m
1 stop
Depart: Thu Jul 13 2017 Return: Thu Jul 20 2017 Trip spans 8 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Mon Jul 10 2017 Return: Wed Jul 19 2017 Trip spans 10 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 Jul 22 2017 Return: Mon Jul 31 2017 Trip spans 10 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Tue Jul 18 2017 Return: Mon Jul 31 2017 Trip spans 14 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Wed Jul 12 2017 Return: Thu Jul 20 2017 Trip spans 9 days
Air Canada
Air Canada
SEA
7:00a
YXU
1:26p
6h 26m
1 stop
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Tue Jul 4 2017 Return: Thu Jul 20 2017 Trip spans 17 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Wed Jul 5 2017 Return: Thu Jul 20 2017 Trip spans 16 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Fri Jun 23 2017 Return: Fri Jun 30 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
2:00a
YXU
2:59a
0h 59m
nonstop
YXU
2:00a
SEA
8:59a
6h 59m
nonstop
Depart: Thu Jul 6 2017 Return: Thu Jul 20 2017 Trip spans 15 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Sun Jul 16 2017 Return: Mon Jul 31 2017 Trip spans 16 days
Air Canada
Air Canada
SEA
2:30a
YXU
9:41a
7h 11m
1 stop
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Mon Jul 17 2017 Return: Sat Aug 5 2017 Trip spans 20 days
Air Canada
Air Canada
SEA
7:00a
YXU
1:26p
6h 26m
1 stop
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Thu Jul 20 2017 Return: Tue Aug 1 2017 Trip spans 13 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
3:05p
SEA
7:28a
16h 23m
2 stops
Depart: Fri Jul 21 2017 Return: Wed Aug 2 2017 Trip spans 13 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Sat Jul 8 2017 Return: Thu Jul 20 2017 Trip spans 13 days
Air Canada
Air Canada
SEA
3:05p
YXU
1:21a
10h 16m
2 stops
YXU
11:30a
SEA
8:49p
9h 19m
1 stop
Depart: Fri Jul 7 2017 Return: Tue Jul 18 2017 Trip spans 12 days
Air Canada
Air Canada
SEA
6:05a
YXU
1:21a
19h 16m
2 stops
YXU
5:00p
SEA
7:28a
14h 28m
2 stops
Depart: Sun Jul 9 2017 Return: Tue Jul 18 2017 Trip spans 10 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
5:00p
SEA
7:28a
14h 28m
2 stops
Depart: Mon Jul 3 2017 Return: Tue Jul 18 2017 Trip spans 16 days
Air Canada
Air Canada
SEA
6:05a
YXU
5:11p
11h 06m
2 stops
YXU
3:05p
SEA
7:28a
16h 23m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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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
$537
Destination

London
$537