Find Cheap Flights from Seattle to United Kingdom

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 to United Kingdom

(Round-trip)
Depart: Sat Oct 21 2017 Return: Fri Nov 3 2017 Trip spans 14 days
Icelandair
Icelandair
SEA
LHR
11h 25m
1 stop
LHR
SEA
12h 25m
1 stop
Depart: Sun Sep 24 2017 Return: Mon Oct 9 2017 Trip spans 16 days
Norwegian
Norwegian
SEA
LGW
9h 10m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Tue Sep 26 2017 Return: Fri Oct 6 2017 Trip spans 11 days
British Airways
British Airways
SEA
LHR
9h 10m
nonstop
LHR
SEA
9h 55m
nonstop
Depart: Tue Oct 17 2017 Return: Thu Oct 26 2017 Trip spans 10 days
Finnair
Finnair
SEA
LHR
9h 10m
nonstop
LHR
SEA
9h 55m
nonstop
Depart: Thu Sep 14 2017 Return: Fri Sep 22 2017 Trip spans 9 days
Virgin Atlantic
Virgin Atlantic
SEA
LGW
17h 00m
1 stop
LGW
SEA
18h 25m
1 stop
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
Iberia
Iberia
SEA
LHR
14h 45m
1 stop
LHR
SEA
19h 18m
1 stop
Depart: Mon Oct 23 2017 Return: Tue Oct 31 2017 Trip spans 9 days
SWISS
SWISS
SEA
LCY
39h 40m
2 stops
LCY
SEA
34h 56m
2 stops
Depart: Wed Sep 27 2017 Return: Sat Oct 14 2017 Trip spans 18 days
Thomas Cook Airlines
Thomas Cook Airlines
SEA
MAN
20h 45m
1 stop
MAN
SEA
16h 55m
1 stop
Depart: Fri Oct 20 2017 Return: Mon Oct 30 2017 Trip spans 11 days
Lufthansa
Lufthansa
SEA
SOU
18h 05m
2 stops
SOU
SEA
20h 23m
2 stops
Depart: Wed Nov 1 2017 Return: Wed Nov 15 2017 Trip spans 15 days
Delta
Delta
SEA
CWL
12h 16m
1 stop
CWL
SEA
33h 11m
1 stop
Depart: Mon Dec 11 2017 Return: Mon Dec 25 2017 Trip spans 15 days
KLM
KLM
SEA
LCY
20h 57m
1 stop
LCY
SEA
20h 49m
2 stops
Depart: Tue Dec 19 2017 Return: Tue Dec 26 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
LHR
14h 35m
1 stop
LHR
SEA
16h 59m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 18 2017 Trip spans 16 days
Air France
Air France
SEA
SOU
20h 49m
1 stop
SOU
SEA
13h 16m
1 stop
Depart: Sat Feb 10 2018 Return: Sun Feb 25 2018 Trip spans 16 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 05m
1 stop
Depart: Thu Oct 19 2017 Return: Sun Oct 22 2017 Trip spans 4 days
Air Canada
Air Canada
SEA
BFS
20h 35m
2 stops
BFS
SEA
39h 40m
2 stops
Depart: Sat Feb 10 2018 Return: Thu Feb 15 2018 Trip spans 6 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 05m
1 stop
Depart: Wed Sep 27 2017 Return: Wed Nov 1 2017 Trip spans 36 days
Norwegian
Norwegian
SEA
LGW
9h 10m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Tue Nov 7 2017 Return: Tue Nov 21 2017 Trip spans 15 days
Aer Lingus
Aer Lingus
SEA
BHX
20h 30m
2 stops
BHX
SEA
18h 15m
2 stops
Depart: Mon Oct 2 2017 Return: Mon Oct 9 2017 Trip spans 8 days
Norwegian
Norwegian
SEA
LGW
9h 20m
nonstop
LGW
SEA
9h 55m
nonstop
Depart: Mon Nov 20 2017 Return: Sun Nov 26 2017 Trip spans 7 days
Icelandair
Icelandair
SEA
LGW
11h 35m
1 stop
LGW
SEA
28h 05m
1 stop
* 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.

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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
$402
Destination

Belfast
$867
Southampton
$716
Cardiff
$724
London
only $402
only $696
only $404
Manchester
$711
Birmingham
$936