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

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

Book cheap flights from London to Seattle/Tacoma Intl

(Round-trip)
Depart: Tue 2 Jun 2015 Return: Tue 16 Jun 2015 Trip spans 15 days
£436
Select
Delta
Delta
LHR
09:00
SEA
01:32
16h 32m
1 stop
SEA
15:15
LHR
01:00
9h 45m
nonstop
Depart: Fri 20 Nov 2015 Return: Fri 4 Dec 2015 Trip spans 15 days
£448
Select
Icelandair
Icelandair
LGW
07:30
SEA
19:40
12h 10m
1 stop
SEA
10:30
LGW
22:15
11h 45m
1 stop
Depart: Wed 18 Nov 2015 Return: Fri 20 Nov 2015 Trip spans 3 days
£488
Select
Icelandair
Icelandair
LHR
08:00
SEA
19:40
11h 40m
1 stop
SEA
10:30
LHR
06:30
20h 00m
1 stop
Depart: Thu 18 Jun 2015 Return: Sun 5 Jul 2015 Trip spans 18 days
£499
Select
Virgin Atlantic
Virgin Atlantic
LHR
07:15
SEA
01:11
17h 56m
1 stop
SEA
15:20
LHR
01:00
9h 40m
nonstop
Depart: Mon 1 Jun 2015 Return: Sat 20 Jun 2015 Trip spans 20 days
£602
Select
Iberia
Iberia
LHR
13:15
SEA
23:50
34h 35m
1 stop
SEA
01:00
LHR
10:45
33h 45m
1 stop
Depart: Mon 15 Jun 2015 Return: Mon 22 Jun 2015 Trip spans 8 days
£610
Select
American Airlines
American Airlines
LHR
08:25
SEA
01:09
16h 44m
1 stop
SEA
09:05
LHR
23:25
14h 20m
1 stop
Depart: Thu 4 Jun 2015 Return: Tue 16 Jun 2015 Trip spans 13 days
£617
Select
British Airways
British Airways
LHR
04:50
SEA
14:25
9h 35m
nonstop
SEA
19:59
LHR
10:45
14h 46m
1 stop
Depart: Thu 28 May 2015 Return: Wed 3 Jun 2015 Trip spans 7 days
£648
Select
Air France
Air France
LHR
09:05
SEA
19:18
10h 13m
nonstop
SEA
15:13
LHR
01:00
9h 47m
nonstop
Depart: Tue 15 Sep 2015 Return: Tue 29 Sep 2015 Trip spans 15 days
£666
Select
SAS
SAS
LHR
03:05
SEA
23:37
20h 32m
2 stops
SEA
04:05
LHR
01:05
21h 00m
2 stops
Depart: Tue 1 Sep 2015 Return: Wed 30 Sep 2015 Trip spans 30 days
£667
Select
Aer Lingus
Aer Lingus
LGW
05:10
SEA
03:52
22h 42m
2 stops
SEA
06:53
LGW
00:05
17h 12m
2 stops
Depart: Sun 31 May 2015 Return: Mon 8 Jun 2015 Trip spans 9 days
£668
Select
KLM Royal Dutch
KLM Royal Dutch
LHR
09:05
SEA
19:18
10h 13m
nonstop
SEA
07:40
LHR
23:05
15h 25m
1 stop
Depart: Sat 29 Aug 2015 Return: Mon 21 Sep 2015 Trip spans 24 days
£695
Select
United
United
LHR
08:00
SEA
02:11
18h 11m
1 stop
SEA
08:09
LHR
01:30
17h 21m
2 stops
Depart: Fri 17 Jul 2015 Return: Tue 28 Jul 2015 Trip spans 12 days
£1053
Select
LOT Polish Air
LOT Polish Air
LHR
06:15
SEA
01:44
43h 29m
2 stops
SEA
09:56
LHR
05:00
19h 04m
2 stops
Depart: Tue 4 Aug 2015 Return: Thu 27 Aug 2015 Trip spans 24 days
£1079
Select
Lufthansa
Lufthansa
LHR
02:30
SEA
15:30
13h 00m
1 stop
SEA
10:30
LHR
23:40
13h 10m
1 stop
Depart: Wed 24 Jun 2015 Return: Mon 6 Jul 2015 Trip spans 13 days
£1096
Select
Air Canada
Air Canada
LHR
04:30
SEA
01:23
20h 53m
2 stops
SEA
19:05
LHR
09:00
13h 55m
1 stop
Depart: Thu 9 Jul 2015 Return: Mon 17 Aug 2015 Trip spans 40 days
£1218
Select
Lufthansa
Lufthansa
LCY
05:10
SEA
05:10
24h 00m
2 stops
SEA
09:40
LCY
06:40
21h 00m
1 stop
Direct flights LON - SEA on British Airways
Flight No. Departure LHR Arrival SEA Mon Tue Wed Thu Fri Sat Sun Valid between
53 08:50 10:25 21 May - 22 Oct
53 09:40 11:15 22 May - 23 Oct
53 09:55 11:30 23 May - 24 Oct
49 15:30 17:05 21 May - 24 Oct
Airports
Origin

London
only £436
only £1218
only £448
Destination

Seattle
£436