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: Sat Oct 21 2017 Return: Fri Nov 3 2017 Trip spans 14 days
Icelandair
Icelandair
SEA
LHR
11h 25m
1 stop
LHR
SEA
12h 25m
1 stop
Depart: Sun Sep 24 2017 Return: Mon Oct 9 2017 Trip spans 16 days
Norwegian
Norwegian
SEA
LGW
9h 10m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Dec 4 2017 Return: Wed Dec 13 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
SEA
LTN
15h 25m
1 stop
LTN
SEA
17h 00m
1 stop
Depart: Fri Oct 13 2017 Return: Wed Oct 25 2017 Trip spans 13 days
British Airways
British Airways
SEA
LHR
9h 10m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Thu Sep 14 2017 Return: Fri Sep 22 2017 Trip spans 9 days
Virgin Atlantic
Virgin Atlantic
SEA
LGW
17h 00m
1 stop
LGW
SEA
18h 25m
1 stop
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
Iberia
Iberia
SEA
LHR
14h 45m
1 stop
LHR
SEA
19h 18m
1 stop
Depart: Mon Oct 23 2017 Return: Tue Oct 31 2017 Trip spans 9 days
SWISS
SWISS
SEA
LCY
39h 40m
2 stops
LCY
SEA
34h 56m
2 stops
Depart: Mon Dec 11 2017 Return: Mon Dec 25 2017 Trip spans 15 days
KLM
KLM
SEA
LCY
20h 57m
1 stop
LCY
SEA
20h 49m
2 stops
Depart: Mon Jan 1 2018 Return: Wed Jan 10 2018 Trip spans 10 days
Lufthansa
Lufthansa
SEA
LCY
19h 40m
1 stop
LCY
SEA
20h 10m
2 stops
Depart: Tue Dec 19 2017 Return: Tue Dec 26 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
LHR
14h 35m
1 stop
LHR
SEA
16h 59m
1 stop
Depart: Sat Feb 10 2018 Return: Sun Feb 25 2018 Trip spans 16 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 05m
1 stop
Depart: Wed Sep 27 2017 Return: Wed Nov 1 2017 Trip spans 36 days
Norwegian
Norwegian
SEA
LGW
9h 10m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Nov 20 2017 Return: Sun Nov 26 2017 Trip spans 7 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 05m
1 stop
Depart: Mon Oct 2 2017 Return: Wed Oct 18 2017 Trip spans 17 days
Norwegian
Norwegian
SEA
LGW
9h 20m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Jan 15 2018 Return: Sat Jan 20 2018 Trip spans 6 days
Icelandair
Icelandair
SEA
LHR
12h 00m
1 stop
LHR
SEA
12h 25m
1 stop
Depart: Fri Oct 13 2017 Return: Wed Oct 25 2017 Trip spans 13 days
Norwegian
Norwegian
SEA
LGW
9h 20m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Wed Jan 17 2018 Return: Sun Jan 21 2018 Trip spans 5 days
Icelandair
Icelandair
SEA
LHR
12h 00m
1 stop
LHR
SEA
12h 25m
1 stop
Depart: Wed Jan 17 2018 Return: Sun Jan 21 2018 Trip spans 5 days
Multiple Airlines
Multiple Airlines
SEA
LTN
15h 25m
1 stop
LTN
SEA
32h 40m
1 stop
Depart: Wed Nov 8 2017 Return: Sun Nov 19 2017 Trip spans 12 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Feb 5 2018 Return: Sun Feb 18 2018 Trip spans 14 days
Icelandair
Icelandair
SEA
LHR
20h 20m
1 stop
LHR
SEA
28h 15m
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
$402
Destination

London
only $402
only $589
only $696
only $404
Airlines Airline reviews

75 travelers who booked a flight from Seattle to London rated their chosen airlines with an average of 7.9.

Overall
8.0
Boarding
8.3
Crew
8.5
Comfort
7.4
Food
7.6
Entertainment
8.0