Find Cheap Flights from Seattle to London

Depart
Return
1 adult
Adults
18-64
Seniors
65+
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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Book cheap flights from Seattle to London

(Round-trip)
Depart: Sun Oct 1 2017 Return: Mon Oct 9 2017 Trip spans 9 days
Norwegian
Norwegian
SEA
LGW
9h 20m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Sun Oct 1 2017 Return: Mon Oct 9 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
LHR
9h 10m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Sun Aug 6 2017 Return: Wed Aug 30 2017 Trip spans 25 days
Air Canada
Air Canada
SEA
LHR
17h 45m
1 stop
LHR
SEA
22h 09m
2 stops
Depart: Thu Nov 2 2017 Return: Fri Nov 10 2017 Trip spans 9 days
Icelandair
Icelandair
SEA
LGW
11h 25m
1 stop
LGW
SEA
12h 40m
1 stop
Depart: Tue Aug 15 2017 Return: Tue Aug 29 2017 Trip spans 15 days
Lufthansa
Lufthansa
SEA
STN
16h 10m
1 stop
STN
SEA
14h 10m
1 stop
Depart: Mon Sep 11 2017 Return: Thu Sep 21 2017 Trip spans 11 days
SWISS
SWISS
SEA
LCY
32h 26m
2 stops
LCY
SEA
22h 09m
2 stops
Depart: Tue Aug 15 2017 Return: Wed Aug 30 2017 Trip spans 16 days
Virgin Atlantic
Virgin Atlantic
SEA
LGW
17h 15m
1 stop
LGW
SEA
18h 44m
1 stop
Depart: Sat Dec 30 2017 Return: Mon Jan 8 2018 Trip spans 10 days
United
United
SEA
LHR
22h 50m
1 stop
LHR
SEA
17h 48m
1 stop
Depart: Sun Dec 24 2017 Return: Fri Jan 5 2018 Trip spans 13 days
Austrian Airlines
Austrian Airlines
SEA
LHR
14h 40m
1 stop
LHR
SEA
20h 55m
1 stop
Depart: Mon Aug 14 2017 Return: Mon Aug 28 2017 Trip spans 15 days
British Airways
British Airways
SEA
LCY
28h 26m
2 stops
LCY
SEA
34h 50m
2 stops
Depart: Mon Oct 2 2017 Return: Wed Oct 25 2017 Trip spans 24 days
Norwegian
Norwegian
SEA
LGW
9h 20m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Wed Nov 1 2017 Return: Wed Nov 8 2017 Trip spans 8 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Thu Jul 20 2017 Return: Mon Jul 31 2017 Trip spans 12 days
$1022
Select
American Airlines
American Airlines
SEA
LHR
16h 55m
1 stop
LHR
SEA
16h 52m
1 stop
Depart: Sun Nov 5 2017 Return: Fri Nov 24 2017 Trip spans 20 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Nov 6 2017 Return: Fri Nov 17 2017 Trip spans 12 days
Major Airline
Major Airline
SEA
LHR
9h 30m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Wed Nov 22 2017 Return: Fri Dec 1 2017 Trip spans 10 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Nov 20 2017 Return: Sun Nov 26 2017 Trip spans 7 days
Major Airline
Major Airline
SEA
LHR
9h 30m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Tue Aug 15 2017 Return: Wed Aug 30 2017 Trip spans 16 days
Air Canada
Air Canada
SEA
LHR
17h 45m
1 stop
LHR
SEA
22h 09m
2 stops
Depart: Sun Aug 27 2017 Return: Mon Sep 4 2017 Trip spans 9 days
$1256
Select
Delta
Delta
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Thu Nov 2 2017 Return: Fri Nov 10 2017 Trip spans 9 days
Icelandair
Icelandair
SEA
LHR
11h 50m
1 stop
LHR
SEA
12h 25m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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Airports
Origin

Seattle
$450
Destination

London
only $550
only $674
only $450
only $641
Airlines Airline reviews

2 travelers who booked a flight from Seattle to London rated their chosen airlines with an average of 8.3.

Overall
9.0
Boarding
9.0
Crew
7.0
Comfort
9.0
Food
10.0
Entertainment
6.0