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Find flight deals from London Heathrow to Seattle (LHR - SEA)

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

Book cheap flights from London Heathrow to Seattle

(Round-trip)
Depart: Thu, 23 Oct, 2014 Return: Sun, 26 Oct, 2014 Trip spans 4 days
United
United
LHR
11:00
SEA
01:21
14h 21m
1 stop
SEA
17:38
LHR
10:25
16h 47m
1 stop
Depart: Thu, 2 Oct, 2014 Return: Thu, 16 Oct, 2014 Trip spans 15 days
US Airways
US Airways
LHR
10:25
SEA
16:07
29h 42m
1 stop
SEA
09:10
LHR
23:25
14h 15m
1 stop
Depart: Sat, 11 Oct, 2014 Return: Sun, 12 Oct, 2014 Trip spans 2 days
US Airways
US Airways
LHR
10:25
SEA
16:07
29h 42m
1 stop
SEA
18:10
LHR
19:50
25h 40m
1 stop
Depart: Tue, 7 Oct, 2014 Return: Fri, 24 Oct, 2014 Trip spans 18 days
US Airways
US Airways
LHR
10:25
SEA
16:07
29h 42m
1 stop
SEA
09:10
LHR
23:25
14h 15m
1 stop
Depart: Fri, 3 Oct, 2014 Return: Fri, 10 Oct, 2014 Trip spans 8 days
US Airways
US Airways
LHR
10:25
SEA
14:01
27h 36m
1 stop
SEA
09:10
LHR
23:25
14h 15m
1 stop
Depart: Fri, 10 Oct, 2014 Return: Fri, 17 Oct, 2014 Trip spans 8 days
US Airways
US Airways
LHR
06:05
SEA
00:47
18h 42m
1 stop
SEA
09:10
LHR
23:25
14h 15m
1 stop
Depart: Wed, 17 Sep, 2014 Return: Wed, 24 Sep, 2014 Trip spans 8 days
American Airlines
American Airlines
LHR
06:30
SEA
01:55
19h 25m
1 stop
SEA
03:00
LHR
20:35
17h 35m
1 stop
Depart: Sat, 20 Sep, 2014 Return: Thu, 25 Sep, 2014 Trip spans 6 days
American Airlines
American Airlines
LHR
06:30
SEA
01:55
19h 25m
1 stop
SEA
03:00
LHR
18:55
15h 55m
1 stop
Depart: Wed, 1 Oct, 2014 Return: Fri, 10 Oct, 2014 Trip spans 10 days
American Airlines
American Airlines
LHR
06:30
SEA
01:55
19h 25m
1 stop
SEA
03:00
LHR
21:55
18h 55m
1 stop
Depart: Wed, 10 Sep, 2014 Return: Wed, 17 Sep, 2014 Trip spans 8 days
Delta
Delta
LHR
10:25
SEA
03:05
16h 40m
direct
SEA
14:33
LHR
00:05
9h 32m
direct
Depart: Mon, 8 Sep, 2014 Return: Thu, 25 Sep, 2014 Trip spans 18 days
United
United
LHR
14:00
SEA
16:16
26h 16m
2 stops
SEA
04:03
LHR
21:20
17h 17m
2 stops
Depart: Mon, 15 Sep, 2014 Return: Thu, 2 Oct, 2014 Trip spans 18 days
United
United
LHR
08:05
SEA
02:35
18h 30m
2 stops
SEA
04:00
LHR
19:40
15h 40m
2 stops
Depart: Thu, 25 Sep, 2014 Return: Sun, 28 Sep, 2014 Trip spans 4 days
United
United
LHR
04:40
SEA
00:42
20h 02m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Depart: Fri, 19 Sep, 2014 Return: Sun, 12 Oct, 2014 Trip spans 24 days
American Airlines
American Airlines
LHR
06:30
SEA
01:55
19h 25m
1 stop
SEA
03:00
LHR
19:45
16h 45m
1 stop
Depart: Thu, 11 Sep, 2014 Return: Sun, 14 Sep, 2014 Trip spans 4 days
United
United
LHR
06:05
SEA
22:16
16h 11m
2 stops
SEA
14:19
LHR
21:20
31h 01m
2 stops
Depart: Thu, 18 Sep, 2014 Return: Sun, 21 Sep, 2014 Trip spans 4 days
United
United
LHR
06:05
SEA
00:21
18h 16m
1 stop
SEA
17:32
LHR
18:45
25h 13m
1 stop
Depart: Thu, 4 Sep, 2014 Return: Wed, 10 Sep, 2014 Trip spans 7 days
Delta
Delta
LHR
07:15
SEA
00:34
17h 19m
direct
SEA
14:33
LHR
00:05
9h 32m
direct
Depart: Fri, 12 Sep, 2014 Return: Mon, 15 Sep, 2014 Trip spans 4 days
United
United
LHR
08:05
SEA
01:07
17h 02m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Depart: Sat, 13 Sep, 2014 Return: Mon, 22 Sep, 2014 Trip spans 10 days
United
United
LHR
06:05
SEA
23:32
17h 27m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Depart: Tue, 16 Sep, 2014 Return: Sat, 20 Sep, 2014 Trip spans 5 days
United
United
LHR
06:05
SEA
02:31
20h 26m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Change your search
Direct flights LHR - SEA on British Airways
Flight No. Departure LHR Arrival SEA Sun Mon Tue Wed Thu Fri Sat Valid between
53 09:40 11:15 3 Oct - 3 Oct
53 09:40 11:15 5 Oct - 12 Oct
53 09:40 11:15 2 Oct - 2 Oct
53 09:45 11:20 4 Oct - 25 Oct
53 09:55 11:30 6 Sep - 28 Sep
53 09:55 11:30 11 Sep - 26 Sep
53 09:55 11:30 23 Aug - 5 Sep
49 15:05 16:40 3 Sep - 10 Sep
49 15:05 16:40 17 Sep - 29 Sep
49 15:05 16:40 23 Sep - 23 Sep
49 15:05 16:40 30 Sep - 1 Oct
49 15:05 16:40 2 Oct - 7 Oct
49 15:05 16:40 1 Sep - 16 Sep
Airports
Origin

London
£652
Destination

Seattle
£652