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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: Thu 29 Oct 2015 Return: Mon 2 Nov 2015 Trip spans 5 days
£496
Select
Icelandair
Icelandair
LHR
16:35
SEA
20:40
28h 05m
1 stop
SEA
10:30
LHR
22:30
12h 00m
1 stop
Depart: Wed 6 May 2015 Return: Wed 20 May 2015 Trip spans 15 days
£639
Select
American Airlines
American Airlines
LHR
10:00
SEA
03:03
17h 03m
1 stop
SEA
06:20
LHR
02:20
20h 00m
1 stop
Depart: Mon 11 May 2015 Return: Tue 19 May 2015 Trip spans 9 days
£651
Select
Delta
Delta
LHR
09:00
SEA
01:32
16h 32m
1 stop
SEA
11:47
LHR
00:15
12h 28m
1 stop
Depart: Tue 28 Apr 2015 Return: Wed 3 Jun 2015 Trip spans 37 days
£666
Select
SAS
SAS
LHR
03:05
SEA
00:16
21h 11m
2 stops
SEA
02:40
LHR
05:50
27h 10m
2 stops
Depart: Fri 24 Apr 2015 Return: Mon 27 Apr 2015 Trip spans 4 days
£719
Select
Aeroflot
Aeroflot
LHR
18:45
SEA
01:57
31h 12m
2 stops
SEA
03:20
LHR
09:25
30h 05m
2 stops
Depart: Fri 19 Jun 2015 Return: Sat 27 Jun 2015 Trip spans 9 days
£765
Select
KLM Royal Dutch
KLM Royal Dutch
LHR
02:30
SEA
15:09
12h 39m
1 stop
SEA
14:01
LHR
04:15
14h 14m
1 stop
Depart: Fri 8 May 2015 Return: Tue 19 May 2015 Trip spans 12 days
£828
Select
Air Canada
Air Canada
LHR
08:05
SEA
01:26
17h 21m
2 stops
SEA
03:30
LHR
23:05
19h 35m
1 stop
Depart: Thu 24 Sep 2015 Return: Thu 1 Oct 2015 Trip spans 8 days
£890
Select
Finnair
Finnair
LHR
11:30
SEA
21:05
9h 35m
nonstop
SEA
15:15
LHR
00:30
9h 15m
nonstop
Depart: Tue 5 May 2015 Return: Tue 19 May 2015 Trip spans 15 days
£900
Select
Iberia
Iberia
LHR
03:35
SEA
23:48
20h 13m
2 stops
SEA
01:00
LHR
18:35
17h 35m
1 stop
Depart: Sat 20 Jun 2015 Return: Wed 24 Jun 2015 Trip spans 5 days
£911
Select
US Airways
US Airways
LHR
06:15
SEA
22:54
16h 39m
1 stop
SEA
09:05
LHR
23:25
14h 20m
1 stop
Depart: Mon 25 May 2015 Return: Mon 1 Jun 2015 Trip spans 8 days
£914
Select
Air France
Air France
LHR
09:05
SEA
19:18
10h 13m
nonstop
SEA
15:13
LHR
01:00
9h 47m
nonstop
Depart: Sun 16 Aug 2015 Return: Thu 27 Aug 2015 Trip spans 12 days
£1015
Select
Brussels Airlines
Brussels Airlines
LHR
07:05
SEA
00:25
41h 20m
2 stops
SEA
04:05
LHR
05:05
25h 00m
2 stops
Depart: Fri 24 Jul 2015 Return: Sun 26 Jul 2015 Trip spans 3 days
£1047
Select
United
United
LHR
14:00
SEA
15:02
25h 02m
1 stop
SEA
02:30
LHR
23:40
21h 10m
1 stop
Depart: Tue 4 Aug 2015 Return: Mon 10 Aug 2015 Trip spans 7 days
£1085
Select
Virgin Atlantic
Virgin Atlantic
LHR
07:50
SEA
23:34
15h 44m
1 stop
SEA
09:45
LHR
23:05
13h 20m
1 stop
Depart: Wed 29 Jul 2015 Return: Fri 14 Aug 2015 Trip spans 17 days
£1109
Select
LOT Polish Air
LOT Polish Air
LHR
02:30
SEA
02:03
23h 33m
2 stops
SEA
09:45
LHR
05:00
19h 15m
2 stops
Depart: Mon 22 Jun 2015 Return: Mon 29 Jun 2015 Trip spans 8 days
£1208
Select
British Airways
British Airways
LHR
11:30
SEA
21:05
9h 35m
nonstop
SEA
15:15
LHR
00:30
9h 15m
nonstop
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 9 Apr - 22 Oct
53 09:40 11:15 10 Apr - 23 Oct
53 09:55 11:30 11 Apr - 24 Oct
49 15:30 17:05 7 Apr - 24 Oct
Airports
Origin

London
£496
Destination

Seattle
£496