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

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

Book cheap flights from London Heathrow to Seattle/Tacoma Intl

(Round-trip)
Depart: Wed 11 Mar 2015 Return: Wed 18 Mar 2015 Trip spans 8 days
£479
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Multiple Airlines
Multiple Airlines
LHR
09:00
SEA
19:26
10h 26m
nonstop
SEA
13:48
LHR
04:25
14h 37m
1 stop
Depart: Sun 8 Mar 2015 Return: Sun 22 Mar 2015 Trip spans 15 days
£489
Select
Delta
Delta
LHR
11:00
SEA
12:59
25h 59m
1 stop
SEA
19:55
LHR
21:45
25h 50m
1 stop
Depart: Tue 17 Mar 2015 Return: Wed 25 Mar 2015 Trip spans 9 days
£519
Select
Iberia
Iberia
LHR
05:55
SEA
02:25
20h 30m
1 stop
SEA
04:51
LHR
21:40
16h 49m
1 stop
Depart: Wed 4 Mar 2015 Return: Wed 11 Mar 2015 Trip spans 7 days
£556
Select
SAS
SAS
LHR
01:40
SEA
00:13
22h 33m
2 stops
SEA
04:10
LHR
05:00
24h 50m
2 stops
Depart: Mon 16 Mar 2015 Return: Thu 19 Mar 2015 Trip spans 4 days
£582
Select
US Airways
US Airways
LHR
09:20
SEA
15:20
30h 00m
1 stop
SEA
02:35
LHR
19:55
17h 20m
1 stop
Depart: Sun 19 Apr 2015 Return: Sun 3 May 2015 Trip spans 15 days
£606
Select
Virgin Atlantic
Virgin Atlantic
LHR
09:00
SEA
02:40
17h 40m
1 stop
SEA
17:15
LHR
08:10
14h 55m
1 stop
Depart: Thu 26 Mar 2015 Return: Thu 16 Apr 2015 Trip spans 22 days
£627
Select
United
United
LHR
05:25
SEA
02:57
21h 32m
2 stops
SEA
07:30
LHR
00:20
16h 50m
1 stop
Depart: Thu 10 Sep 2015 Return: Fri 2 Oct 2015 Trip spans 23 days
£633
Select
Icelandair
Icelandair
LHR
09:00
SEA
21:45
12h 45m
1 stop
SEA
12:30
LHR
08:10
19h 40m
1 stop
Depart: Sat 9 May 2015 Return: Sat 23 May 2015 Trip spans 15 days
£667
Select
American Airlines
American Airlines
LHR
08:50
SEA
01:25
16h 35m
1 stop
SEA
03:00
LHR
18:50
15h 50m
1 stop
Depart: Fri 27 Mar 2015 Return: Mon 6 Apr 2015 Trip spans 11 days
£779
Select
Lufthansa
Lufthansa
LHR
02:30
SEA
16:15
13h 45m
1 stop
SEA
12:10
LHR
23:50
11h 40m
1 stop
Depart: Thu 30 Jul 2015 Return: Sun 9 Aug 2015 Trip spans 11 days
£988
Select
Aeroflot
Aeroflot
LHR
18:45
SEA
04:30
33h 45m
2 stops
SEA
19:55
LHR
00:05
52h 10m
2 stops
Change your search
Direct flights LHR - SEA on British Airways
Flight No. Departure LHR Arrival SEA Mon Tue Wed Thu Fri Sat Sun Valid between
53 08:50 10:25 2 Apr - 22 Oct
53 09:20 12:05 8 Mar - 27 Mar
53 09:40 11:15 3 Apr - 23 Oct
53 09:55 11:30 29 Mar - 24 Oct
49 14:15 17:05 8 Mar - 28 Mar
49 15:30 17:05 30 Mar - 18 Oct
49 15:30 17:05 29 Mar - 29 Mar
Airports
Origin

London
£479
Destination

Seattle
£479