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

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/Tacoma Intl to London

(Round-trip)
Depart: Thu Feb 1 2018 Return: Sat Mar 17 2018 Trip spans 44 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
25h 15m
1 stop
Depart: Sun Jan 14 2018 Return: Thu Jan 25 2018 Trip spans 12 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
12h 50m
1 stop
Depart: Sun Apr 8 2018 Return: Wed Apr 18 2018 Trip spans 11 days
Norwegian
Norwegian
SEA
LGW
9h 15m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Fri Feb 9 2018 Return: Mon Feb 19 2018 Trip spans 11 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
26h 45m
1 stop
Depart: Fri Jan 19 2018 Return: Thu Feb 15 2018 Trip spans 28 days
Icelandair
Icelandair
SEA
LGW
11h 50m
1 stop
LGW
SEA
28h 15m
1 stop
Depart: Thu Jan 18 2018 Return: Thu Feb 1 2018 Trip spans 15 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
22h 40m
1 stop
Depart: Wed Apr 11 2018 Return: Wed Apr 25 2018 Trip spans 15 days
Norwegian
Norwegian
SEA
LGW
9h 15m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Sat Jan 20 2018 Return: Thu Feb 15 2018 Trip spans 27 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 15m
1 stop
Depart: Sat Jan 20 2018 Return: Sat Feb 10 2018 Trip spans 22 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
22h 40m
1 stop
Depart: Mon Nov 6 2017 Return: Wed Nov 22 2017 Trip spans 17 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Sun Jan 21 2018 Return: Thu Feb 15 2018 Trip spans 26 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 15m
1 stop
Depart: Fri Feb 9 2018 Return: Sun Feb 18 2018 Trip spans 10 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
22h 40m
1 stop
Depart: Sun Nov 12 2017 Return: Wed Dec 13 2017 Trip spans 32 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Wed Jan 24 2018 Return: Sun Feb 4 2018 Trip spans 12 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
12h 50m
1 stop
Depart: Wed Feb 21 2018 Return: Sun Mar 4 2018 Trip spans 12 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
22h 40m
1 stop
Depart: Mon Nov 13 2017 Return: Wed Dec 13 2017 Trip spans 31 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Thu Jan 25 2018 Return: Mon Feb 5 2018 Trip spans 12 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
12h 50m
1 stop
Depart: Thu Mar 1 2018 Return: Thu Mar 22 2018 Trip spans 21 days
Multiple Airlines
Multiple Airlines
SEA
LHR
9h 30m
nonstop
LHR
SEA
21h 10m
1 stop
Depart: Wed Nov 22 2017 Return: Wed Nov 29 2017 Trip spans 8 days
Norwegian
Norwegian
SEA
LGW
9h 30m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Fri Jan 26 2018 Return: Tue Feb 6 2018 Trip spans 12 days
Icelandair
Icelandair
SEA
LGW
11h 50m
1 stop
LGW
SEA
12h 50m
1 stop
Direct flights SEA to LON on American Airlines
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
6232 1:20 pm 5:50 am Oct 28 - Oct 28
6232 1:30 pm 7:00 am Oct 8 - Oct 27
6232 1:40 pm 7:05 am Nov 9 - Nov 18
6232 1:40 pm 7:05 am Nov 25 - Mar 10
6232 2:40 pm 7:05 am Nov 2 - Nov 4
6127 6:20 pm 11:45 am Nov 5 - Mar 10
6127 6:35 pm 12:00 pm Nov 10 - Mar 9
6127 7:15 pm 12:25 pm Oct 7 - Oct 27
6127 7:20 pm 11:45 am Oct 28 - Nov 4
6127 7:35 pm 12:00 pm Nov 3 - Nov 3
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Seattle
$373
Destination

London
only $373
only $419
Airlines Airline reviews

4 travelers who booked a flight from Seattle to London rated their chosen airlines with an average of 6.6.

Overall
7.5
Boarding
7.5
Crew
7.5
Comfort
6.0
Food
5.5
Entertainment
6.0