Find Cheap Flights from London to Seattle

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 London to Seattle

(Round-trip)
Depart: Wed Nov 22 2017 Return: Sun Nov 26 2017 Trip spans 5 days
Norwegian
Norwegian
LGW
SEA
9h 55m
nonstop
SEA
LGW
9h 30m
nonstop
Depart: Thu Sep 21 2017 Return: Sun Sep 24 2017 Trip spans 4 days
Lufthansa
Lufthansa
LCY
SEA
24h 35m
1 stop
SEA
LCY
18h 20m
1 stop
Depart: Tue Nov 21 2017 Return: Mon Nov 27 2017 Trip spans 7 days
Major Airline
Major Airline
LHR
SEA
9h 50m
3 stops
SEA
LHR
9h 30m
3 stops
Depart: Fri Dec 29 2017 Return: Sun Jan 7 2018 Trip spans 10 days
Multiple Airlines
Multiple Airlines
LHR
SEA
9h 50m
nonstop
SEA
LHR
15h 45m
1 stop
Depart: Fri Dec 8 2017 Return: Fri Dec 29 2017 Trip spans 22 days
KLM
KLM
LHR
SEA
12h 58m
1 stop
SEA
LHR
12h 57m
1 stop
Depart: Wed Nov 22 2017 Return: Fri Dec 8 2017 Trip spans 17 days
Icelandair
Icelandair
LGW
SEA
12h 10m
1 stop
SEA
LGW
11h 45m
1 stop
Depart: Mon Dec 18 2017 Return: Wed Jan 3 2018 Trip spans 17 days
Air France
Air France
LHR
SEA
13h 35m
1 stop
SEA
LHR
17h 32m
1 stop
Depart: Fri Oct 6 2017 Return: Fri Oct 13 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
LGW
SEA
15h 29m
1 stop
SEA
LGW
17h 25m
1 stop
Depart: Mon Aug 28 2017 Return: Mon Sep 18 2017 Trip spans 22 days
Austrian Airlines
Austrian Airlines
LHR
SEA
34h 09m
1 stop
SEA
LHR
15h 59m
1 stop
Depart: Wed Sep 20 2017 Return: Wed Sep 27 2017 Trip spans 8 days
Norwegian
Norwegian
LGW
SEA
9h 55m
nonstop
SEA
LGW
9h 10m
nonstop
Depart: Sun Sep 17 2017 Return: Wed Sep 27 2017 Trip spans 11 days
Multiple Airlines
Multiple Airlines
LHR
SEA
16h 38m
1 stop
SEA
LHR
16h 20m
1 stop
Depart: Fri Oct 6 2017 Return: Sun Oct 15 2017 Trip spans 10 days
Lufthansa
Lufthansa
LCY
SEA
18h 50m
2 stops
SEA
LCY
18h 20m
1 stop
Depart: Wed Nov 22 2017 Return: Fri Dec 8 2017 Trip spans 17 days
KLM
KLM
LCY
SEA
17h 37m
2 stops
SEA
LCY
15h 05m
2 stops
Depart: Fri Oct 6 2017 Return: Sun Oct 15 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
LHR
SEA
12h 45m
1 stop
SEA
LHR
16h 34m
1 stop
Depart: Sun Jul 2 2017 Return: Sun Jul 9 2017 Trip spans 8 days
$1157
Select
WestJet
WestJet
LGW
SEA
26h 05m
1 stop
SEA
LGW
16h 29m
1 stop
Depart: Wed Aug 23 2017 Return: Wed Aug 30 2017 Trip spans 8 days
$1163
Select
SWISS
SWISS
LCY
SEA
20h 21m
2 stops
SEA
LCY
32h 15m
2 stops
Depart: Mon Dec 11 2017 Return: Wed Jan 3 2018 Trip spans 24 days
Lufthansa
Lufthansa
LCY
SEA
20h 10m
2 stops
SEA
LCY
19h 40m
1 stop
Depart: Fri Nov 17 2017 Return: Sat Nov 25 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
LHR
SEA
16h 19m
1 stop
SEA
LHR
22h 50m
1 stop
Depart: Fri Dec 8 2017 Return: Fri Dec 29 2017 Trip spans 22 days
KLM
KLM
LCY
SEA
18h 17m
2 stops
SEA
LCY
12h 02m
1 stop
Depart: Fri Dec 15 2017 Return: Mon Dec 25 2017 Trip spans 11 days
Norwegian
Norwegian
LGW
SEA
9h 55m
nonstop
SEA
LGW
9h 30m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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

London
only $508
only $508
only $478
Destination

Seattle
$478
Airlines Airline reviews

3 travelers who booked a flight from London to Seattle rated their chosen airlines with an average of 8.8.

Overall
8.7
Boarding
8.0
Crew
10.0
Comfort
8.0
Food
8.7
Entertainment
9.3