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
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: Sun Apr 2 2017 Return: Fri Apr 14 2017 Trip spans 13 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Tue Apr 18 2017 Return: Tue May 2 2017 Trip spans 15 days
Air Canada
Air Canada
SEA
LHR
13h 25m
1 stop
LHR
SEA
23h 25m
2 stops
Depart: Sat Jun 17 2017 Return: Thu Jun 29 2017 Trip spans 13 days
Major Airline
Major Airline
SEA
LHR
15h 25m
1 stop
LHR
SEA
16h 25m
1 stop
Depart: Tue May 16 2017 Return: Wed May 24 2017 Trip spans 9 days
Icelandair
Icelandair
SEA
LHR
19h 40m
1 stop
LHR
SEA
22h 05m
1 stop
Depart: Thu Jun 1 2017 Return: Tue Jun 13 2017 Trip spans 13 days
British Airways
British Airways
SEA
LHR
9h 10m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Tue Jul 4 2017 Return: Thu Jul 20 2017 Trip spans 17 days
Delta
Delta
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Sun Apr 9 2017 Return: Wed Apr 19 2017 Trip spans 11 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Mon Apr 10 2017 Return: Thu Apr 20 2017 Trip spans 11 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Thu Jul 20 2017 Return: Wed Jul 26 2017 Trip spans 7 days
Major Airline
Major Airline
SEA
LHR
11h 15m
1 stop
LHR
SEA
28h 35m
1 stop
Depart: Sun Apr 23 2017 Return: Fri May 5 2017 Trip spans 13 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Tue Aug 1 2017 Return: Wed Aug 16 2017 Trip spans 16 days
Delta
Delta
SEA
LHR
9h 00m
nonstop
LHR
SEA
18h 41m
1 stop
Depart: Mon Jun 26 2017 Return: Mon Jul 10 2017 Trip spans 15 days
Major Airline
Major Airline
SEA
LHR
11h 45m
1 stop
LHR
SEA
12h 35m
1 stop
Depart: Mon May 1 2017 Return: Wed May 10 2017 Trip spans 10 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Thu Jun 22 2017 Return: Thu Jun 29 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
LHR
15h 55m
1 stop
LHR
SEA
16h 30m
1 stop
Depart: Wed Mar 8 2017 Return: Wed Apr 12 2017 Trip spans 35 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 58m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Wed Mar 29 2017 Return: Wed Apr 12 2017 Trip spans 15 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Tue Feb 28 2017 Return: Wed Mar 8 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
LHR
1h 33m
nonstop
LHR
SEA
17h 33m
nonstop
Depart: Wed May 10 2017 Return: Thu Jun 1 2017 Trip spans 23 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
14h 50m
1 stop
LHR
SEA
15h 15m
1 stop
Depart: Mon May 15 2017 Return: Wed May 31 2017 Trip spans 17 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
Depart: Tue Jun 6 2017 Return: Tue Jun 13 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
SEA
LHR
9h 00m
nonstop
LHR
SEA
9h 40m
nonstop
* 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
$576
Destination

London
$576
Airlines Airline reviews

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

Overall
8.0
Boarding
8.2
Crew
8.6
Comfort
7.3
Food
7.4
Entertainment
8.0