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

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

Book cheap flights from Seattle/Tacoma Intl to London

(Round-trip)
Depart: Tue Mar 24 2015 Return: Wed Apr 15 2015 Trip spans 23 days
Multiple Airlines
Multiple Airlines
SEA
12:30p
LTN
3:30a
15h 00m
1 stop
LTN
3:35a
SEA
9:45p
18h 10m
1 stop
Depart: Tue Feb 10 2015 Return: Fri Apr 10 2015 Trip spans 59 days
Icelandair
Icelandair
SEA
10:30a
LHR
10:30p
12h 00m
1 stop
LHR
9:00a
SEA
9:45p
12h 45m
1 stop
Depart: Sat Feb 28 2015 Return: Sun Mar 1 2015 Trip spans 2 days
Air Canada
Air Canada
SEA
3:00a
LHR
12:05a
21h 05m
2 stops
LHR
1:00p
SEA
12:21a
35h 21m
1 stop
Depart: Sat Jan 24 2015 Return: Mon Feb 2 2015 Trip spans 10 days
Icelandair
Icelandair
SEA
10:30a
LGW
10:15p
11h 45m
1 stop
LGW
7:30a
SEA
7:40p
12h 10m
1 stop
Depart: Wed Jan 21 2015 Return: Thu Jan 29 2015 Trip spans 9 days
Iberia
Iberia
SEA
1:00p
LHR
10:30p
9h 30m
nonstop
LHR
9:15a
SEA
7:05p
9h 50m
nonstop
Depart: Fri Feb 13 2015 Return: Mon Feb 23 2015 Trip spans 11 days
Multiple Airlines
Multiple Airlines
SEA
10:30a
LGW
9:15a
22h 45m
1 stop
LGW
10:15a
SEA
7:40p
33h 25m
1 stop
Depart: Wed Jan 14 2015 Return: Tue Jan 20 2015 Trip spans 7 days
United
United
SEA
7:03a
LHR
10:30p
15h 27m
1 stop
LHR
5:30a
SEA
11:59p
18h 29m
1 stop
Depart: Wed Feb 4 2015 Return: Mon Feb 23 2015 Trip spans 20 days
Multiple Airlines
Multiple Airlines
SEA
6:10a
LHR
9:40p
15h 30m
1 stop
LHR
10:30a
SEA
11:48a
25h 18m
1 stop
Depart: Fri Jan 9 2015 Return: Sun Jan 18 2015 Trip spans 10 days
Delta
Delta
SEA
5:40p
LHR
7:10a
13h 30m
1 stop
LHR
4:55a
SEA
12:42a
19h 47m
1 stop
Depart: Sat Jun 6 2015 Return: Mon Jun 8 2015 Trip spans 3 days
Lufthansa
Lufthansa
SEA
12:15p
LHR
11:40p
11h 25m
1 stop
LHR
2:50a
SEA
12:25a
21h 35m
2 stops
Depart: Wed Dec 31 2014 Return: Fri Jan 9 2015 Trip spans 10 days
American Airlines
American Airlines
SEA
1:35a
LHR
8:25p
18h 50m
1 stop
LHR
7:35a
SEA
12:59a
17h 24m
1 stop
Depart: Wed May 27 2015 Return: Wed Jun 3 2015 Trip spans 8 days
Aeroflot
Aeroflot
SEA
6:45p
LHR
9:45p
27h 00m
2 stops
LHR
6:45p
SEA
1:55a
31h 10m
2 stops
Depart: Thu May 14 2015 Return: Sat Jun 6 2015 Trip spans 24 days
US Airways
US Airways
SEA
8:45p
LHR
10:10a
13h 25m
1 stop
LHR
7:20a
SEA
3:13a
19h 53m
2 stops
Change your search
Direct flights SEA to LON on Delta
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
37 5:17 pm 11:05 am Jan 19 - Jan 23
37 5:17 pm 11:05 am Jan 27 - Jan 27
37 5:22 pm 11:05 am Dec 28 - Dec 28
37 6:37 pm 12:25 pm Jan 20 - Jan 26
37 6:37 pm 12:25 pm Jan 5 - Jan 18
37 6:42 pm 12:25 pm Dec 29 - Jan 4
37 6:42 pm 12:25 pm Dec 18 - Dec 27
Airports
Origin

Seattle
$754
Destination

London
only $754
only $832
only $914