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

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 London to Seattle/Tacoma Intl

(Round-trip)
Depart: Fri 6 May 2016 Return: Mon 16 May 2016 Trip spans 11 days
£451
Select
Icelandair
Icelandair
LGW
SEA
12h 35m
1 stop
SEA
LGW
11h 15m
1 stop
Depart: Fri 13 May 2016 Return: Mon 23 May 2016 Trip spans 11 days
£511
Select
WestJet
WestJet
LGW
SEA
34h 15m
2 stops
SEA
LGW
35h 39m
2 stops
Depart: Thu 14 Apr 2016 Return: Sat 30 Apr 2016 Trip spans 17 days
£553
Select
Iberia
Iberia
LHR
SEA
19h 02m
nonstop
SEA
LHR
14h 15m
1 stop
Depart: Mon 29 Feb 2016 Return: Mon 7 Mar 2016 Trip spans 8 days
£558
Select
KLM
KLM
LCY
SEA
24h 33m
1 stop
SEA
LCY
16h 04m
1 stop
Depart: Sat 27 Feb 2016 Return: Thu 10 Mar 2016 Trip spans 13 days
£565
Select
Air France
Air France
LHR
SEA
13h 42m
1 stop
SEA
LHR
13h 23m
1 stop
Depart: Wed 2 Mar 2016 Return: Sun 6 Mar 2016 Trip spans 5 days
£567
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Aer Lingus
Aer Lingus
LGW
SEA
33h 57m
2 stops
SEA
LGW
24h 45m
2 stops
Depart: Thu 3 Mar 2016 Return: Tue 22 Mar 2016 Trip spans 19 days
£597
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
10h 25m
nonstop
SEA
LHR
9h 56m
nonstop
Depart: Sun 6 Mar 2016 Return: Wed 16 Mar 2016 Trip spans 10 days
£692
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American Airlines
American Airlines
LHR
SEA
9h 50m
nonstop
SEA
LHR
9h 20m
nonstop
Depart: Mon 4 Jul 2016 Return: Tue 5 Jul 2016 Trip spans 2 days
£795
Select
Icelandair
Icelandair
LHR
SEA
12h 35m
1 stop
SEA
LHR
11h 15m
1 stop
Depart: Sat 26 Mar 2016 Return: Sun 10 Apr 2016 Trip spans 16 days
£814
Select
SAS
SAS
LHR
SEA
51h 55m
2 stops
SEA
LHR
22h 31m
2 stops
Depart: Thu 24 Mar 2016 Return: Sat 9 Apr 2016 Trip spans 17 days
£995
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Alitalia
Alitalia
LCY
SEA
42h 36m
2 stops
SEA
LCY
26h 45m
2 stops
Depart: Thu 28 Jul 2016 Return: Wed 3 Aug 2016 Trip spans 7 days
£1033
Select
Aer Lingus
Aer Lingus
LCY
SEA
19h 50m
2 stops
SEA
LCY
16h 50m
2 stops
Depart: Sun 26 Jun 2016 Return: Sun 31 Jul 2016 Trip spans 36 days
£1281
Select
Air France
Air France
LCY
SEA
23h 15m
2 stops
SEA
LCY
18h 13m
2 stops
Direct flights LON - SEA on British Airways
Flight No. Departure LHR Arrival SEA Mon Tue Wed Thu Fri Sat Sun Valid between
53 08:55 10:45 12 Feb - 19 Feb
53 08:55 11:45 14 Mar - 26 Mar
53 08:55 10:45 4 Mar - 12 Mar
49 14:10 16:05 2 Feb - 23 Feb
49 14:10 17:05 15 Mar - 22 Mar
49 14:10 16:05 1 Mar - 8 Mar
49 14:15 17:05 13 Mar - 26 Mar
49 14:15 16:05 2 Mar - 12 Mar
49 14:15 16:05 21 Feb - 29 Feb
49 14:15 16:05 20 Feb - 24 Feb
49 14:15 16:05 30 Jan - 19 Feb
* 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

London
only £553
only £558
only £451
Destination

Seattle
£451