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Find Flight Deals from Seattle/Tacoma Intl to London Heathrow (SEA - LHR)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to London Heathrow

(Round-trip)
Depart: Tue Mar 24 2015 Return: Wed May 6 2015 Trip spans 44 days
Delta
Delta
SEA
1:48p
LHR
4:25a
14h 37m
1 stop
LHR
8:35a
SEA
1:25a
16h 50m
1 stop
Depart: Wed Mar 25 2015 Return: Wed Apr 15 2015 Trip spans 22 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
6:35a
SEA
9:57p
15h 22m
1 stop
Depart: Sat May 2 2015 Return: Mon May 4 2015 Trip spans 3 days
Air Canada
Air Canada
SEA
3:30a
LHR
4:00a
24h 30m
2 stops
LHR
6:05a
SEA
6:01p
11h 56m
1 stop
Depart: Mon Mar 23 2015 Return: Wed Apr 29 2015 Trip spans 38 days
Delta
Delta
SEA
12:29p
LHR
4:25a
15h 56m
1 stop
LHR
8:35a
SEA
2:40a
18h 05m
1 stop
Depart: Tue Mar 17 2015 Return: Thu Mar 19 2015 Trip spans 3 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
2:57a
21h 27m
1 stop
Depart: Sun Mar 22 2015 Return: Wed Apr 15 2015 Trip spans 25 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
6:35a
SEA
9:57p
15h 22m
1 stop
Depart: Sun Mar 29 2015 Return: Wed Apr 15 2015 Trip spans 18 days
United
United
SEA
8:45a
LHR
12:20a
15h 35m
1 stop
LHR
6:35a
SEA
9:57p
15h 22m
1 stop
Depart: Thu Mar 12 2015 Return: Mon Apr 13 2015 Trip spans 33 days
Delta
Delta
SEA
1:48p
LHR
4:25a
14h 37m
1 stop
LHR
8:35a
SEA
2:40a
18h 05m
1 stop
Depart: Wed Mar 11 2015 Return: Mon Mar 30 2015 Trip spans 20 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
6:35a
SEA
3:58a
21h 23m
1 stop
Depart: Mon Mar 9 2015 Return: Tue Mar 17 2015 Trip spans 9 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
2:58a
21h 28m
1 stop
Depart: Tue Mar 10 2015 Return: Tue Mar 17 2015 Trip spans 8 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
12:25a
18h 55m
2 stops
Depart: Mon Mar 16 2015 Return: Thu Mar 19 2015 Trip spans 4 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
12:25a
18h 55m
2 stops
Depart: Wed Mar 18 2015 Return: Mon Mar 23 2015 Trip spans 6 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
12:25a
18h 55m
2 stops
Depart: Sun Mar 8 2015 Return: Tue Mar 17 2015 Trip spans 10 days
United
United
SEA
8:45a
LHR
12:30a
15h 45m
1 stop
LHR
5:30a
SEA
2:58a
21h 28m
1 stop
Depart: Fri Mar 20 2015 Return: Mon Mar 23 2015 Trip spans 4 days
United
United
SEA
5:14a
LHR
12:30a
19h 16m
2 stops
LHR
5:30a
SEA
2:58a
21h 28m
1 stop
Depart: Sun Apr 26 2015 Return: Wed May 6 2015 Trip spans 11 days
$1025
Select
Icelandair
Icelandair
SEA
12:30p
LHR
8:10a
19h 40m
1 stop
LHR
9:00a
SEA
9:45p
12h 45m
1 stop
Depart: Fri May 22 2015 Return: Sat May 23 2015 Trip spans 2 days
$1133
Select
British Airways
British Airways
SEA
3:15p
LHR
12:30a
9h 15m
nonstop
LHR
2:50p
SEA
3:22a
36h 32m
2 stops
Depart: Fri Jul 24 2015 Return: Sat Aug 8 2015 Trip spans 16 days
$1278
Select
Lufthansa
Lufthansa
SEA
12:15p
LHR
11:40p
11h 25m
1 stop
LHR
7:05a
SEA
3:30p
32h 25m
2 stops
Depart: Wed Jun 17 2015 Return: Wed Jul 1 2015 Trip spans 15 days
$1396
Select
American Airlines
American Airlines
SEA
2:05p
LHR
10:45a
20h 40m
1 stop
LHR
8:15a
SEA
1:29a
17h 14m
1 stop
Depart: Sun Aug 2 2015 Return: Thu Aug 6 2015 Trip spans 5 days
$1456
Select
Aeroflot
Aeroflot
SEA
7:55p
LHR
9:25a
37h 30m
2 stops
LHR
6:45p
SEA
4:30a
33h 45m
2 stops
Change your search
Direct flights SEA to LHR on Delta
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
37 6:32 pm 11:05 am Mar 18 - Mar 18
37 6:52 pm 12:25 pm Mar 1 - Mar 7
37 7:10 pm 1:00 pm Apr 1 - Apr 30
37 7:10 pm 1:00 pm Mar 28 - Mar 28
37 7:16 pm 1:00 pm Mar 29 - Mar 31
37 7:52 pm 12:25 pm Mar 19 - Mar 27
37 7:52 pm 12:25 pm Mar 8 - Mar 17
Airports
Origin

Seattle
$916
Destination

London
$916