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

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 London to Seattle/Tacoma Intl

(Round-trip)
Depart: Mon Mar 27 2017 Return: Wed Mar 29 2017 Trip spans 3 days
Delta
Delta
LHR
SEA
28h 50m
2 stops
SEA
LHR
20h 00m
2 stops
Depart: Sun Aug 27 2017 Return: Sun Sep 10 2017 Trip spans 15 days
Icelandair
Icelandair
LGW
SEA
30h 05m
1 stop
SEA
LGW
11h 15m
1 stop
Depart: Tue Mar 7 2017 Return: Tue Mar 14 2017 Trip spans 7 days
SWISS
SWISS
LCY
SEA
19h 14m
2 stops
SEA
LCY
17h 20m
2 stops
Depart: Sat May 6 2017 Return: Mon May 8 2017 Trip spans 3 days
United
United
LHR
SEA
29h 26m
2 stops
SEA
LHR
16h 42m
2 stops
Depart: Wed Mar 29 2017 Return: Wed Apr 12 2017 Trip spans 15 days
KLM
KLM
LHR
SEA
12h 41m
1 stop
SEA
LHR
15h 13m
1 stop
Depart: Mon Mar 6 2017 Return: Sun Mar 26 2017 Trip spans 20 days
Virgin Atlantic
Virgin Atlantic
LGW
SEA
35h 18m
1 stop
SEA
LGW
31h 10m
1 stop
Depart: Thu Aug 17 2017 Return: Sun Aug 20 2017 Trip spans 4 days
Lufthansa
Lufthansa
LCY
SEA
34h 40m
1 stop
SEA
LCY
18h 20m
1 stop
Depart: Tue Apr 25 2017 Return: Tue May 16 2017 Trip spans 22 days
British Airways
British Airways
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 10m
nonstop
Depart: Wed Jun 21 2017 Return: Tue Aug 1 2017 Trip spans 42 days
Icelandair
Icelandair
LGW
SEA
30h 20m
1 stop
SEA
LGW
11h 35m
1 stop
Depart: Tue Aug 22 2017 Return: Sun Sep 3 2017 Trip spans 13 days
SWISS
SWISS
LCY
SEA
21h 34m
2 stops
SEA
LCY
20h 40m
1 stop
Depart: Wed Mar 29 2017 Return: Wed Apr 12 2017 Trip spans 15 days
KLM
KLM
LCY
SEA
14h 20m
1 stop
SEA
LCY
15h 18m
1 stop
Depart: Thu Apr 13 2017 Return: Sun Apr 16 2017 Trip spans 4 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Depart: Thu May 11 2017 Return: Mon May 22 2017 Trip spans 12 days
Icelandair
Icelandair
LHR
SEA
29h 05m
1 stop
SEA
LHR
19h 40m
1 stop
Depart: Wed May 24 2017 Return: Thu Jun 1 2017 Trip spans 9 days
KLM
KLM
LCY
SEA
23h 03m
1 stop
SEA
LCY
21h 33m
1 stop
Depart: Sun Aug 20 2017 Return: Sat Sep 2 2017 Trip spans 14 days
Icelandair
Icelandair
LHR
SEA
22h 05m
1 stop
SEA
LHR
26h 55m
1 stop
Depart: Wed Apr 12 2017 Return: Wed Apr 19 2017 Trip spans 8 days
Lufthansa
Lufthansa
LCY
SEA
24h 35m
1 stop
SEA
LCY
34h 35m
1 stop
Depart: Mon Aug 28 2017 Return: Wed Sep 13 2017 Trip spans 17 days
Icelandair
Icelandair
LGW
SEA
13h 05m
1 stop
SEA
LGW
18h 30m
1 stop
Depart: Fri May 26 2017 Return: Sun Jun 4 2017 Trip spans 10 days
KLM
KLM
LCY
SEA
14h 00m
1 stop
SEA
LCY
15h 14m
1 stop
Depart: Thu Aug 10 2017 Return: Thu Aug 24 2017 Trip spans 15 days
British Airways
British Airways
LHR
SEA
9h 55m
nonstop
SEA
LHR
9h 30m
nonstop
Depart: Fri Jun 9 2017 Return: Fri Jun 30 2017 Trip spans 22 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
9h 40m
nonstop
SEA
LHR
9h 00m
nonstop
Direct flights LON to SEA on American Airlines
Flight # Depart LHR Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
6233 8:45 am 10:35 am Feb 23 - Mar 11
6233 8:45 am 11:35 am Mar 16 - Mar 25
6233 9:20 am 11:15 am Mar 26 - Jun 2
6128 2:25 pm 5:15 pm Mar 12 - Mar 25
6128 2:25 pm 4:15 pm Feb 23 - Mar 11
6128 3:30 pm 5:10 pm Mar 26 - Oct 28
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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Airports
Origin

London
only $570
only $694
only $682
Destination

Seattle
$570
Airlines Airline reviews

75 travelers who booked a flight from London to Seattle rated their chosen airlines with an average of 7.7.

Overall
7.8
Boarding
7.6
Crew
8.4
Comfort
7.2
Food
7.5
Entertainment
7.6