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: Sun Sep 3 2017 Return: Mon Sep 25 2017 Trip spans 23 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Depart: Wed Oct 11 2017 Return: Wed Oct 18 2017 Trip spans 8 days
KLM
KLM
LHR
SEA
12h 45m
1 stop
SEA
LHR
12h 54m
1 stop
Depart: Wed Oct 25 2017 Return: Wed Nov 22 2017 Trip spans 29 days
Major Airline
Major Airline
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 30m
nonstop
Depart: Wed Sep 20 2017 Return: Wed Oct 11 2017 Trip spans 22 days
British Airways
British Airways
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 10m
nonstop
Depart: Mon Sep 11 2017 Return: Sun Sep 24 2017 Trip spans 14 days
Icelandair
Icelandair
LHR
SEA
12h 35m
1 stop
SEA
LHR
11h 15m
1 stop
Depart: Thu Aug 3 2017 Return: Fri Aug 18 2017 Trip spans 16 days
Delta
Delta
LHR
SEA
16h 47m
1 stop
SEA
LHR
15h 55m
1 stop
Depart: Sat Aug 26 2017 Return: Mon Sep 4 2017 Trip spans 10 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
15h 02m
1 stop
SEA
LHR
9h 00m
nonstop
Depart: Thu Aug 24 2017 Return: Tue Sep 5 2017 Trip spans 13 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Depart: Sat May 13 2017 Return: Sun May 14 2017 Trip spans 2 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
32h 09m
1 stop
SEA
LHR
34h 55m
1 stop
Depart: Thu Jun 1 2017 Return: Mon Jun 5 2017 Trip spans 5 days
$1121
Select
British Airways
British Airways
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 30m
nonstop
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
16h 45m
1 stop
SEA
LHR
16h 00m
1 stop
Depart: Sat Jul 15 2017 Return: Sun Sep 10 2017 Trip spans 58 days
$1386
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Depart: Sun Jul 16 2017 Return: Wed Aug 16 2017 Trip spans 32 days
$1696
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Depart: Sat Aug 5 2017 Return: Sat Aug 19 2017 Trip spans 15 days
$1748
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

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.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

London
$531
Destination

Seattle
$531
Airlines Airline reviews

96 travelers who booked a flight from London to Seattle rated their chosen airlines with an average of 7.6.

Overall
7.9
Boarding
7.7
Crew
8.4
Comfort
7.2
Food
7.4
Entertainment
7.6