Find Deals on Flights from Seattle/Tacoma Intl to London Heathrow (SEA - LHR)

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/Tacoma Intl to London Heathrow

(Round-trip)
Depart: Mon Oct 10 2016 Return: Tue Nov 1 2016 Trip spans 23 days
Depart: Sat Sep 24 2016 Return: Mon Sep 26 2016 Trip spans 3 days
Depart: Tue Nov 1 2016 Return: Wed Nov 30 2016 Trip spans 30 days
Depart: Mon Sep 26 2016 Return: Mon Oct 3 2016 Trip spans 8 days
Depart: Thu Sep 22 2016 Return: Thu Sep 29 2016 Trip spans 8 days
Depart: Thu Nov 24 2016 Return: Tue Nov 29 2016 Trip spans 6 days
Depart: Sun Jan 15 2017 Return: Tue Jan 31 2017 Trip spans 17 days
Depart: Fri Dec 2 2016 Return: Thu Dec 15 2016 Trip spans 14 days
Depart: Thu Jan 19 2017 Return: Sat Jan 28 2017 Trip spans 10 days
Depart: Sun Jan 22 2017 Return: Thu Feb 2 2017 Trip spans 12 days
Depart: Thu Nov 17 2016 Return: Mon Nov 28 2016 Trip spans 12 days
Depart: Wed Nov 9 2016 Return: Thu Nov 17 2016 Trip spans 9 days
Depart: Fri Feb 17 2017 Return: Sun Feb 26 2017 Trip spans 10 days
Depart: Sat Oct 8 2016 Return: Sun Oct 16 2016 Trip spans 9 days
Depart: Tue Feb 21 2017 Return: Mon Feb 27 2017 Trip spans 7 days
Depart: Mon Oct 31 2016 Return: Mon Nov 7 2016 Trip spans 8 days
Depart: Mon Sep 26 2016 Return: Mon Oct 10 2016 Trip spans 15 days
Depart: Sun Oct 9 2016 Return: Tue Oct 18 2016 Trip spans 10 days
Depart: Fri Dec 23 2016 Return: Sat Dec 31 2016 Trip spans 9 days
Depart: Wed Aug 31 2016 Return: Sun Sep 25 2016 Trip spans 26 days
Direct flights SEA to LHR on Delta
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
36 9:15 pm 3:05 pm Oct 1 - Oct 22
36 9:15 pm 3:05 pm Sep 26 - Sep 30
36 9:15 pm 3:05 pm Sep 28 - Sep 28
36 9:15 pm 3:05 pm Oct 2 - Oct 16
36 9:15 pm 3:05 pm Sep 10 - Sep 10
36 9:15 pm 3:05 pm Sep 14 - Sep 25
36 9:15 pm 3:05 pm Sep 7 - Sep 8
36 9:15 pm 3:05 pm Sep 5 - Sep 13
36 9:15 pm 3:05 pm Sep 17 - Sep 24
* 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.

We compile tonnes of data for you
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

Seattle
$562
Destination

London
$562
Airlines Airline reviews

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

Overall
8.0
Boarding
8.2
Crew
8.4
Comfort
7.2
Food
7.6
Entertainment
7.8