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Find flight deals from Seattle/Tacoma Intl to London (SEA - LON)

Flexible dates? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to London

(Round-trip)
Depart: Mon 14 Sep 2015 Return: Fri 25 Sep 2015 Trip spans 12 days
£659
Select
Aer Lingus
Aer Lingus
SEA
19:14
LGW
20:25
25h 11m
2 stops
LGW
06:40
SEA
02:03
19h 23m
2 stops
Depart: Wed 8 Jul 2015 Return: Wed 22 Jul 2015 Trip spans 15 days
£956
Select
Air Canada
Air Canada
SEA
05:50
LHR
21:35
15h 45m
1 stop
LHR
06:05
SEA
20:48
14h 43m
1 stop
Depart: Wed 24 Jun 2015 Return: Wed 15 Jul 2015 Trip spans 22 days
£979
Select
Air Canada
Air Canada
SEA
02:30
LHR
18:25
15h 55m
2 stops
LHR
07:05
SEA
22:43
15h 38m
2 stops
Depart: Sun 28 Jun 2015 Return: Tue 14 Jul 2015 Trip spans 17 days
£979
Select
Air Canada
Air Canada
SEA
02:30
LHR
19:30
17h 00m
2 stops
LHR
07:05
SEA
22:43
15h 38m
2 stops
Depart: Sat 27 Jun 2015 Return: Tue 14 Jul 2015 Trip spans 18 days
£1007
Select
Air Canada
Air Canada
SEA
05:55
LHR
21:35
15h 40m
1 stop
LHR
07:05
SEA
22:43
15h 38m
2 stops
Depart: Tue 23 Jun 2015 Return: Wed 15 Jul 2015 Trip spans 23 days
£1012
Select
United
United
SEA
20:27
LHR
17:55
21h 28m
1 stop
LHR
06:05
SEA
20:48
14h 43m
1 stop
Depart: Fri 26 Jun 2015 Return: Tue 14 Jul 2015 Trip spans 19 days
£1019
Select
United
United
SEA
20:27
LHR
17:55
21h 28m
1 stop
LHR
06:05
SEA
19:48
13h 43m
1 stop
Depart: Mon 6 Jul 2015 Return: Sat 1 Aug 2015 Trip spans 27 days
£1020
Select
Air Canada
Air Canada
SEA
08:45
LHR
23:50
15h 05m
2 stops
LHR
07:05
SEA
20:48
13h 43m
2 stops
Depart: Sun 13 Sep 2015 Return: Fri 25 Sep 2015 Trip spans 13 days
£1022
Select
American Airlines
American Airlines
SEA
20:15
LGW
18:55
22h 40m
2 stops
LGW
07:55
SEA
04:01
20h 06m
2 stops
Depart: Sun 9 Aug 2015 Return: Mon 10 Aug 2015 Trip spans 2 days
£1095
Select
United
United
SEA
01:25
LHR
18:20
16h 55m
2 stops
LHR
06:05
SEA
00:43
18h 38m
2 stops
Depart: Thu 13 Aug 2015 Return: Sat 19 Sep 2015 Trip spans 38 days
£1155
Select
American Airlines
American Airlines
SEA
20:35
LHR
10:10
13h 35m
1 stop
LHR
08:15
SEA
00:10
15h 55m
1 stop
Depart: Tue 7 Jul 2015 Return: Wed 22 Jul 2015 Trip spans 16 days
£1162
Select
American Airlines
American Airlines
SEA
20:35
LHR
10:10
13h 35m
1 stop
LHR
06:15
SEA
03:36
21h 21m
1 stop
Depart: Sun 5 Jul 2015 Return: Sat 1 Aug 2015 Trip spans 28 days
£1234
Select
US Airways
US Airways
SEA
20:35
LHR
10:10
13h 35m
1 stop
LHR
03:45
SEA
18:39
14h 54m
1 stop
Depart: Fri 14 Aug 2015 Return: Sat 19 Sep 2015 Trip spans 37 days
£1271
Select
Air France
Air France
SEA
15:20
LHR
01:00
9h 40m
nonstop
LHR
09:05
SEA
19:33
10h 28m
nonstop
Depart: Sat 8 Aug 2015 Return: Mon 10 Aug 2015 Trip spans 3 days
£1506
Select
American Airlines
American Airlines
SEA
20:35
LHR
10:10
13h 35m
1 stop
LHR
03:45
SEA
23:49
20h 04m
1 stop
Depart: Wed 10 Jun 2015 Return: Sat 13 Jun 2015 Trip spans 4 days
£1514
Select
Brussels Airlines
Brussels Airlines
SEA
06:41
LHR
05:05
22h 24m
2 stops
LHR
07:05
SEA
00:23
41h 18m
2 stops
Direct flights SEA - LON on British Airways
Flight No. Departure SEA Arrival LHR Mon Tue Wed Thu Fri Sat Sun Valid between
52 13:40 06:55 21 May - 22 Oct
52 14:00 07:10 22 May - 5 Jun
52 14:00 07:15 23 May - 31 May
52 14:00 07:10 6 Jun - 23 Oct
52 14:00 07:15 7 Jun - 18 Oct
48 19:15 12:30 21 May - 23 Oct
Airports
Origin

Seattle
£659
Destination

London
only £956
only £659