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

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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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to London

(Round-trip)
Depart: Mon Oct 10 2016 Return: Wed Nov 2 2016 Trip spans 24 days
Depart: Mon Oct 10 2016 Return: Thu Oct 27 2016 Trip spans 18 days
Depart: Tue Nov 8 2016 Return: Wed Nov 16 2016 Trip spans 9 days
Depart: Wed Oct 26 2016 Return: Thu Nov 3 2016 Trip spans 9 days
Depart: Sun Oct 9 2016 Return: Mon Oct 17 2016 Trip spans 9 days
Depart: Tue Dec 20 2016 Return: Thu Jan 5 2017 Trip spans 17 days
Depart: Wed Oct 12 2016 Return: Tue Oct 25 2016 Trip spans 14 days
Depart: Tue Oct 11 2016 Return: Mon Oct 17 2016 Trip spans 7 days
Depart: Mon Sep 12 2016 Return: Sun Sep 18 2016 Trip spans 7 days
Depart: Wed Nov 23 2016 Return: Thu Dec 8 2016 Trip spans 16 days
Depart: Wed Dec 7 2016 Return: Wed Dec 14 2016 Trip spans 8 days
Depart: Thu Feb 9 2017 Return: Mon Feb 27 2017 Trip spans 19 days
Depart: Thu Sep 1 2016 Return: Mon Sep 5 2016 Trip spans 5 days
Depart: Sat Feb 11 2017 Return: Tue Mar 7 2017 Trip spans 25 days
Depart: Sat Dec 24 2016 Return: Thu Dec 29 2016 Trip spans 6 days
Depart: Thu Nov 3 2016 Return: Sun Nov 13 2016 Trip spans 11 days
Depart: Tue Sep 27 2016 Return: Thu Oct 6 2016 Trip spans 10 days
Depart: Tue Aug 30 2016 Return: Wed Sep 14 2016 Trip spans 16 days
Depart: Tue Nov 29 2016 Return: Tue Dec 6 2016 Trip spans 8 days
Depart: Tue Nov 29 2016 Return: Thu Dec 8 2016 Trip spans 10 days
Direct flights SEA to LON on Delta
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
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 Oct 1 - Oct 22
36 9:15 pm 3:05 pm Sep 3 - Sep 4
36 9:15 pm 3:05 pm Aug 28 - Sep 2
36 9:15 pm 3:05 pm Sep 17 - Sep 24
36 9:15 pm 3:05 pm Sep 14 - Sep 25
36 9:15 pm 3:05 pm Sep 10 - Sep 10
36 9:15 pm 3:05 pm Sep 7 - Sep 8
36 9:15 pm 3:05 pm Sep 5 - Sep 13
* 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,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Seattle
$581
Destination

London
only $591
only $922
only $581