Find Deals on Flights from Seattle to London Heathrow

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
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 Heathrow

(Round-trip)
Depart: Sat Jan 21 2017 Return: Mon Jan 23 2017 Trip spans 3 days
British Airways
British Airways
SEA
LHR
27h 45m
2 stops
LHR
SEA
22h 16m
2 stops
Depart: Tue Mar 7 2017 Return: Sun Mar 12 2017 Trip spans 6 days
Icelandair
Icelandair
SEA
LHR
20h 00m
1 stop
LHR
SEA
12h 00m
1 stop
Depart: Tue Jan 17 2017 Return: Sat Jan 21 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
LHR
25h 25m
2 stops
LHR
SEA
21h 37m
2 stops
Depart: Thu Feb 16 2017 Return: Tue Feb 28 2017 Trip spans 13 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 57m
nonstop
LHR
SEA
10h 29m
nonstop
Depart: Thu Feb 2 2017 Return: Mon Feb 13 2017 Trip spans 12 days
Finnair
Finnair
SEA
LHR
9h 30m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Fri Dec 9 2016 Return: Fri Dec 16 2016 Trip spans 8 days
Iberia
Iberia
SEA
LHR
9h 20m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Thu Mar 23 2017 Return: Thu Mar 30 2017 Trip spans 8 days
British Airways
British Airways
SEA
LHR
9h 20m
nonstop
LHR
SEA
17h 43m
2 stops
Depart: Tue Jan 31 2017 Return: Tue Feb 7 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
LHR
40h 05m
2 stops
LHR
SEA
21h 37m
2 stops
Depart: Sat Feb 18 2017 Return: Fri Feb 24 2017 Trip spans 7 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 57m
nonstop
LHR
SEA
10h 29m
nonstop
Depart: Mon Feb 13 2017 Return: Tue Feb 21 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
LHR
21h 45m
2 stops
LHR
SEA
34h 12m
2 stops
Depart: Tue Mar 21 2017 Return: Wed Mar 29 2017 Trip spans 9 days
British Airways
British Airways
SEA
LHR
9h 30m
nonstop
LHR
SEA
33h 43m
2 stops
Depart: Thu Feb 16 2017 Return: Fri Feb 24 2017 Trip spans 9 days
Finnair
Finnair
SEA
LHR
9h 20m
nonstop
LHR
SEA
9h 50m
nonstop
Depart: Thu Apr 6 2017 Return: Fri Apr 21 2017 Trip spans 16 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Sun May 7 2017 Return: Mon Jun 19 2017 Trip spans 44 days
Major Airline
Major Airline
SEA
LHR
13h 45m
2 stops
LHR
SEA
16h 35m
2 stops
Depart: Tue May 9 2017 Return: Tue Jun 6 2017 Trip spans 29 days
British Airways
British Airways
SEA
LHR
9h 15m
nonstop
LHR
SEA
33h 54m
2 stops
Depart: Wed Apr 5 2017 Return: Wed Apr 12 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
15h 45m
1 stop
Depart: Sun May 7 2017 Return: Sat May 20 2017 Trip spans 14 days
British Airways
British Airways
SEA
LHR
19h 40m
2 stops
LHR
SEA
9h 35m
nonstop
Depart: Mon May 8 2017 Return: Thu May 18 2017 Trip spans 11 days
Major Airline
Major Airline
SEA
LHR
14h 00m
2 stops
LHR
SEA
16h 36m
2 stops
Depart: Sat Mar 25 2017 Return: Sun Apr 2 2017 Trip spans 9 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
10h 01m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Thu Apr 6 2017 Return: Fri Apr 21 2017 Trip spans 16 days
Major Airline
Major Airline
SEA
LHR
14h 55m
2 stops
LHR
SEA
17h 30m
2 stops
* 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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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

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
$461
Destination

London
$461
Airlines Airline reviews

56 travelers who booked a flight from Seattle to London rated their chosen airlines with an average of 7.8.

Overall
7.9
Boarding
8.2
Crew
8.4
Comfort
7.2
Food
7.4
Entertainment
7.8