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

Depart
Return
1 adult
Adults
18+
Youths
12-17
Children
2-11
Seat infants
under 2
Lap infants
under 2
The price shown for each flight will be the average for all passengers, including any infants.
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Flexible dates? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to London

(Round-trip)
Depart: Fri 13 May 2016 Return: Fri 20 May 2016 Trip spans 8 days
£505
Select
Major Airline
Major Airline
SEA
LGW
14h 55m
1 stop
LGW
SEA
17h 57m
1 stop
Depart: Wed 11 May 2016 Return: Sun 15 May 2016 Trip spans 5 days
£516
Select
WestJet
WestJet
SEA
LGW
29h 38m
1 stop
LGW
SEA
35h 05m
1 stop
Depart: Tue 11 Oct 2016 Return: Thu 20 Oct 2016 Trip spans 10 days
£519
Select
Icelandair
Icelandair
SEA
LGW
12h 10m
1 stop
LGW
SEA
28h 45m
1 stop
Depart: Wed 4 May 2016 Return: Sun 15 May 2016 Trip spans 12 days
£566
Select
Virgin Atlantic
Virgin Atlantic
SEA
LGW
17h 40m
1 stop
LGW
SEA
35h 37m
1 stop
Depart: Sat 17 Sep 2016 Return: Tue 27 Sep 2016 Trip spans 11 days
£618
Select
British Airways
British Airways
SEA
LHR
9h 15m
nonstop
LHR
SEA
9h 35m
nonstop
Depart: Mon 14 Nov 2016 Return: Wed 23 Nov 2016 Trip spans 10 days
£753
Select
Finnair
Finnair
SEA
LHR
9h 30m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Wed 7 Sep 2016 Return: Mon 19 Sep 2016 Trip spans 13 days
£895
Select
SWISS
SWISS
SEA
LCY
23h 28m
2 stops
LCY
SEA
21h 39m
2 stops
Depart: Mon 30 May 2016 Return: Thu 16 Jun 2016 Trip spans 18 days
£963
Select
United
United
SEA
LHR
18h 10m
1 stop
LHR
SEA
18h 51m
2 stops
Depart: Wed 18 May 2016 Return: Wed 25 May 2016 Trip spans 8 days
£519
Select
WestJet
WestJet
SEA
LGW
30h 00m
1 stop
LGW
SEA
16h 05m
1 stop
Depart: Fri 21 Oct 2016 Return: Thu 3 Nov 2016 Trip spans 14 days
£525
Select
Icelandair
Icelandair
SEA
LGW
11h 05m
1 stop
LGW
SEA
12h 10m
1 stop
Depart: Mon 10 Oct 2016 Return: Thu 20 Oct 2016 Trip spans 11 days
£525
Select
Major Airline
Major Airline
SEA
LHR
13h 40m
1 stop
LHR
SEA
14h 02m
1 stop
Depart: Thu 23 Jun 2016 Return: Tue 19 Jul 2016 Trip spans 27 days
£1067
Select
Air France
Air France
SEA
LHR
9h 58m
nonstop
LHR
SEA
10h 22m
nonstop
Depart: Thu 9 Jun 2016 Return: Sat 30 Jul 2016 Trip spans 52 days
£1101
Select
American Airlines
American Airlines
SEA
LGW
25h 45m
2 stops
LGW
SEA
27h 48m
2 stops
Depart: Fri 11 Nov 2016 Return: Sun 27 Nov 2016 Trip spans 17 days
£525
Select
Major Airline
Major Airline
SEA
LHR
12h 45m
1 stop
LHR
SEA
15h 01m
1 stop
Depart: Sat 19 Nov 2016 Return: Sat 26 Nov 2016 Trip spans 8 days
£525
Select
Icelandair
Icelandair
SEA
LGW
11h 45m
1 stop
LGW
SEA
12h 10m
1 stop
Depart: Tue 13 Sep 2016 Return: Wed 28 Sep 2016 Trip spans 16 days
£556
Select
WestJet
WestJet
SEA
LGW
30h 04m
1 stop
LGW
SEA
16h 02m
1 stop
Depart: Sun 29 May 2016 Return: Sat 4 Jun 2016 Trip spans 7 days
£1263
Select
Alitalia
Alitalia
SEA
LCY
42h 29m
2 stops
LCY
SEA
32h 31m
2 stops
Depart: Wed 9 Nov 2016 Return: Thu 24 Nov 2016 Trip spans 16 days
£543
Select
Icelandair
Icelandair
SEA
LHR
12h 00m
1 stop
LHR
SEA
11h 40m
1 stop
Depart: Tue 27 Sep 2016 Return: Tue 18 Oct 2016 Trip spans 22 days
£555
Select
Major Airline
Major Airline
SEA
LHR
24h 45m
2 stops
LHR
SEA
36h 03m
2 stops
Depart: Tue 20 Sep 2016 Return: Tue 4 Oct 2016 Trip spans 15 days
£556
Select
WestJet
WestJet
SEA
LGW
30h 04m
1 stop
LGW
SEA
16h 35m
2 stops
Direct flights SEA - LON on British Airways
Flight # Depart SEA Arrive LHR Mon Tue Wed Thu Fri Sat Sun Valid between
52 13:25 06:45 28 Apr - 2 Jun
52 13:30 06:50 2 May - 30 May
52 13:30 06:50 6 Jun - 24 Oct
52 13:55 07:15 29 Apr - 3 Jun
52 13:55 07:15 5 Jun - 5 Jun
52 13:55 07:15 4 Jun - 11 Jun
48 19:10 12:25 28 Apr - 28 Oct
* We make every attempt to get accurate prices and fees; however, prices and fees are not guaranteed, and may be subject to last minute changes over which we have no control.
Airports
Origin

Seattle
£505
Destination

London
only £525
only £895
only £505