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

Depart
Return
1 adult
Adults
18+
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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Flexible dates? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to London

(Round-trip)
Depart: Tue 11 Oct 2016 Return: Thu 3 Nov 2016 Trip spans 24 days
Depart: Fri 23 Sep 2016 Return: Sun 25 Sep 2016 Trip spans 3 days
Depart: Thu 9 Feb 2017 Return: Mon 27 Feb 2017 Trip spans 19 days
Depart: Fri 10 Feb 2017 Return: Mon 27 Feb 2017 Trip spans 18 days
Depart: Tue 8 Nov 2016 Return: Tue 15 Nov 2016 Trip spans 8 days
Depart: Tue 8 Nov 2016 Return: Tue 15 Nov 2016 Trip spans 8 days
Depart: Wed 21 Dec 2016 Return: Tue 10 Jan 2017 Trip spans 21 days
Depart: Wed 26 Oct 2016 Return: Sun 6 Nov 2016 Trip spans 12 days
Depart: Sat 3 Sep 2016 Return: Sun 11 Sep 2016 Trip spans 9 days
Depart: Tue 11 Oct 2016 Return: Thu 3 Nov 2016 Trip spans 24 days
Depart: Mon 12 Sep 2016 Return: Sun 18 Sep 2016 Trip spans 7 days
Depart: Tue 29 Nov 2016 Return: Tue 6 Dec 2016 Trip spans 8 days
Depart: Thu 1 Sep 2016 Return: Mon 5 Sep 2016 Trip spans 5 days
Depart: Sat 21 Jan 2017 Return: Sat 28 Jan 2017 Trip spans 8 days
Depart: Sun 4 Dec 2016 Return: Sun 11 Dec 2016 Trip spans 8 days
Depart: Wed 12 Oct 2016 Return: Tue 25 Oct 2016 Trip spans 14 days
Depart: Wed 28 Sep 2016 Return: Mon 3 Oct 2016 Trip spans 6 days
Depart: Tue 1 Nov 2016 Return: Thu 3 Nov 2016 Trip spans 3 days
Depart: Wed 8 Feb 2017 Return: Thu 16 Feb 2017 Trip spans 9 days
Depart: Mon 19 Dec 2016 Return: Tue 27 Dec 2016 Trip spans 9 days
Direct flights SEA - LON on British Airways
Flight # Depart SEA Arrive LHR Mon Tue Wed Thu Fri Sat Sun Valid between
52 13:25 06:45 25 Aug - 27 Oct
52 13:30 06:50 29 Aug - 24 Oct
52 13:55 07:15 26 Aug - 28 Oct
48 19:10 12:25 23 Aug - 28 Oct
* We attempt to get accurate prices and fees; however, prices and fees are not guaranteed, and may be subject to last minute changes over which we have no control.
Airports
Origin

Seattle
£410
Destination

London
only £427
only £665
only £410