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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: Wed, 22 Oct, 2014 Return: Wed, 19 Nov, 2014 Trip spans 29 days
Air Canada
Air Canada
LHR
11:00
SEA
22:46
11h 46m
1 stop
SEA
10:45
LHR
22:50
12h 05m
1 stop
Depart: Sat, 1 Nov, 2014 Return: Wed, 12 Nov, 2014 Trip spans 12 days
Air Canada
Air Canada
LHR
10:25
SEA
11:54
26h 29m
1 stop
SEA
10:45
LHR
22:50
12h 05m
1 stop
Depart: Thu, 9 Oct, 2014 Return: Tue, 21 Oct, 2014 Trip spans 13 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: Tue, 14 Oct, 2014 Return: Tue, 21 Oct, 2014 Trip spans 8 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: Tue, 7 Oct, 2014 Return: Sat, 11 Oct, 2014 Trip spans 5 days
US Airways
US Airways
LHR
06:05
SEA
00:47
18h 42m
1 stop
SEA
06:59
LHR
19:50
36h 51m
1 stop
Depart: Sun, 5 Oct, 2014 Return: Sun, 26 Oct, 2014 Trip spans 22 days
US Airways
US Airways
LHR
10:25
SEA
16:07
29h 42m
1 stop
SEA
04:35
LHR
22:25
17h 50m
1 stop
Depart: Sat, 4 Oct, 2014 Return: Fri, 24 Oct, 2014 Trip spans 21 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: Sat, 25 Oct, 2014 Trip spans 15 days
US Airways
US Airways
LHR
10:25
SEA
16:07
29h 42m
1 stop
SEA
06:59
LHR
22:35
15h 36m
1 stop
Depart: Fri, 10 Oct, 2014 Return: Wed, 15 Oct, 2014 Trip spans 6 days
US Airways
US Airways
LHR
08:15
SEA
00:59
16h 44m
1 stop
SEA
09:10
LHR
23:25
14h 15m
1 stop
Depart: Mon, 22 Sep, 2014 Return: Mon, 13 Oct, 2014 Trip spans 22 days
United
United
LHR
08:05
SEA
00:56
16h 51m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Depart: Sat, 20 Sep, 2014 Return: Thu, 25 Sep, 2014 Trip spans 6 days
United
United
LHR
06:05
SEA
22:37
16h 32m
2 stops
SEA
02:15
LHR
18:45
16h 30m
2 stops
Depart: Fri, 26 Sep, 2014 Return: Sun, 28 Sep, 2014 Trip spans 3 days
United
United
LHR
06:05
SEA
02:52
20h 47m
1 stop
SEA
17:32
LHR
09:20
15h 48m
1 stop
Depart: Tue, 9 Sep, 2014 Return: Wed, 1 Oct, 2014 Trip spans 23 days
Delta
Delta
LHR
08:35
SEA
18:50
10h 15m
1 stop
SEA
09:15
LHR
04:35
19h 20m
1 stop
Depart: Sat, 13 Sep, 2014 Return: Mon, 22 Sep, 2014 Trip spans 10 days
Delta
Delta
LHR
07:15
SEA
00:33
17h 18m
direct
SEA
14:33
LHR
00:05
9h 32m
direct
Depart: Wed, 10 Sep, 2014 Return: Sun, 14 Sep, 2014 Trip spans 5 days
Delta
Delta
LHR
09:00
SEA
01:23
16h 23m
direct
SEA
14:33
LHR
00:05
9h 32m
direct
Depart: Fri, 12 Sep, 2014 Return: Wed, 17 Sep, 2014 Trip spans 6 days
Delta
Delta
LHR
08:35
SEA
18:50
10h 15m
1 stop
SEA
12:30
LHR
04:35
16h 05m
1 stop
Depart: Thu, 11 Sep, 2014 Return: Tue, 30 Sep, 2014 Trip spans 20 days
United
United
LHR
06:05
SEA
22:16
16h 11m
2 stops
SEA
04:27
LHR
19:40
15h 13m
2 stops
Depart: Wed, 24 Sep, 2014 Return: Sat, 27 Sep, 2014 Trip spans 4 days
US Airways
US Airways
LHR
06:05
SEA
00:47
18h 42m
1 stop
SEA
06:59
LHR
19:50
36h 51m
1 stop
Depart: Mon, 27 Oct, 2014 Return: Fri, 31 Oct, 2014 Trip spans 5 days
Aeroflot
Aeroflot
LHR
18:30
SEA
13:08
42h 38m
2 stops
SEA
09:45
LHR
22:45
37h 00m
2 stops
Depart: Sun, 26 Oct, 2014 Return: Thu, 30 Oct, 2014 Trip spans 5 days
Icelandair
Icelandair
LHR
16:35
SEA
20:40
28h 05m
1 stop
SEA
12:30
LHR
08:30
20h 00m
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 2 Oct - 2 Oct
53 09:40 11:15 3 Oct - 3 Oct
53 09:40 11:15 5 Oct - 12 Oct
53 09:45 11:20 4 Oct - 25 Oct
53 09:55 11:30 11 Sep - 26 Sep
53 09:55 11:30 6 Sep - 28 Sep
49 15:05 16:40 2 Oct - 7 Oct
49 15:05 16:40 30 Sep - 1 Oct
49 15:05 16:40 23 Sep - 23 Sep
49 15:05 16:40 17 Sep - 29 Sep
49 15:05 16:40 3 Sep - 10 Sep
49 15:05 16:40 8 Oct - 25 Oct
49 15:05 16:40 1 Sep - 16 Sep
Airports
Origin

London
£679
Destination

Seattle
£679