Find Cheap Flights from London Heathrow 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 Heathrow to Seattle

(Round-trip)
Depart: Wed Nov 22 2017 Return: Wed Dec 6 2017 Trip spans 15 days
Icelandair
Icelandair
LHR
SEA
12h 25m
1 stop
SEA
LHR
20h 20m
1 stop
Depart: Fri Oct 27 2017 Return: Sun Nov 5 2017 Trip spans 10 days
British Airways
British Airways
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 25m
nonstop
Depart: Mon Sep 18 2017 Return: Wed Nov 1 2017 Trip spans 45 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
16h 35m
1 stop
SEA
LHR
9h 30m
nonstop
Depart: Fri Sep 29 2017 Return: Fri Oct 20 2017 Trip spans 22 days
Air France
Air France
LHR
SEA
13h 31m
1 stop
SEA
LHR
13h 19m
1 stop
Depart: Mon Sep 18 2017 Return: Wed Nov 1 2017 Trip spans 45 days
Air Canada
Air Canada
LHR
SEA
18h 50m
1 stop
SEA
LHR
18h 10m
1 stop
Depart: Tue Nov 14 2017 Return: Fri Nov 24 2017 Trip spans 11 days
Icelandair
Icelandair
LHR
SEA
12h 25m
1 stop
SEA
LHR
12h 00m
1 stop
Depart: Thu Dec 7 2017 Return: Tue Dec 12 2017 Trip spans 6 days
Icelandair
Icelandair
LHR
SEA
12h 25m
1 stop
SEA
LHR
20h 20m
1 stop
Depart: Fri Oct 20 2017 Return: Mon Oct 23 2017 Trip spans 4 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 10m
nonstop
Depart: Fri Feb 16 2018 Return: Sun Feb 25 2018 Trip spans 10 days
Icelandair
Icelandair
LHR
SEA
28h 15m
1 stop
SEA
LHR
12h 00m
1 stop
Depart: Fri Oct 6 2017 Return: Mon Oct 16 2017 Trip spans 11 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 10m
nonstop
Depart: Fri Jan 12 2018 Return: Fri Jan 19 2018 Trip spans 8 days
Icelandair
Icelandair
LHR
SEA
12h 25m
1 stop
SEA
LHR
12h 00m
1 stop
Depart: Fri Dec 8 2017 Return: Fri Dec 29 2017 Trip spans 22 days
Icelandair
Icelandair
LHR
SEA
12h 25m
1 stop
SEA
LHR
12h 00m
1 stop
Depart: Thu Dec 21 2017 Return: Fri Jan 5 2018 Trip spans 16 days
Icelandair
Icelandair
LHR
SEA
28h 25m
1 stop
SEA
LHR
20h 20m
1 stop
Depart: Mon Aug 21 2017 Return: Mon Aug 28 2017 Trip spans 8 days
$1071
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
18h 09m
1 stop
SEA
LHR
12h 31m
1 stop
Depart: Thu Sep 28 2017 Return: Tue Oct 3 2017 Trip spans 6 days
$1111
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
13h 06m
1 stop
Depart: Sat Dec 16 2017 Return: Wed Jan 3 2018 Trip spans 19 days
Icelandair
Icelandair
LHR
SEA
28h 15m
1 stop
SEA
LHR
20h 20m
1 stop
Depart: Fri Aug 25 2017 Return: Thu Sep 14 2017 Trip spans 21 days
$1843
Select
British Airways
British Airways
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 10m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

We’re not the seller.
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

London
$454
Destination

Seattle
$454
Airlines Airline reviews

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

Overall
7.9
Boarding
7.8
Crew
8.4
Comfort
7.4
Food
7.5
Entertainment
7.6