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: Sat 8 Oct 2016 Return: Thu 20 Oct 2016 Trip spans 13 days
Depart: Sun 25 Sep 2016 Return: Mon 10 Oct 2016 Trip spans 16 days
Depart: Fri 26 Aug 2016 Return: Sun 11 Sep 2016 Trip spans 17 days
Depart: Sat 5 Nov 2016 Return: Fri 18 Nov 2016 Trip spans 14 days
Depart: Tue 29 Nov 2016 Return: Wed 7 Dec 2016 Trip spans 9 days
Depart: Fri 24 Jun 2016 Return: Sat 9 Jul 2016 Trip spans 16 days
Depart: Fri 17 Jun 2016 Return: Mon 4 Jul 2016 Trip spans 18 days
Depart: Tue 12 Jul 2016 Return: Mon 1 Aug 2016 Trip spans 21 days
Depart: Thu 3 Nov 2016 Return: Thu 10 Nov 2016 Trip spans 8 days
Depart: Sun 12 Jun 2016 Return: Mon 4 Jul 2016 Trip spans 23 days
Depart: Sat 1 Oct 2016 Return: Sun 16 Oct 2016 Trip spans 16 days
Depart: Thu 22 Sep 2016 Return: Wed 5 Oct 2016 Trip spans 14 days
Depart: Thu 16 Jun 2016 Return: Sun 19 Jun 2016 Trip spans 4 days
Depart: Tue 8 Nov 2016 Return: Thu 17 Nov 2016 Trip spans 10 days
Depart: Tue 19 Jul 2016 Return: Tue 23 Aug 2016 Trip spans 36 days
Depart: Mon 11 Jul 2016 Return: Mon 29 Aug 2016 Trip spans 50 days
Depart: Sun 18 Sep 2016 Return: Thu 29 Sep 2016 Trip spans 12 days
Depart: Sun 31 Jul 2016 Return: Wed 31 Aug 2016 Trip spans 32 days
Depart: Thu 2 Jun 2016 Return: Mon 6 Jun 2016 Trip spans 5 days
Depart: Wed 24 Aug 2016 Return: Wed 7 Sep 2016 Trip spans 15 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 9 Jun - 27 Oct
52 13:30 06:50 6 Jun - 24 Oct
52 13:55 07:15 4 Jun - 11 Jun
52 13:55 07:15 5 Jun - 5 Jun
52 13:55 07:15 12 Jun - 28 Oct
48 19:10 12:25 26 May - 23 Aug
* We make every 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
£513
Destination

London
only £536
only £850
only £513