Find Deals on Flights from London Heathrow to Seattle/Tacoma Intl (LHR - 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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from London Heathrow to Seattle/Tacoma Intl

(Round-trip)
Depart: Thu May 5 2016 Return: Thu May 19 2016 Trip spans 15 days
Icelandair
Icelandair
LHR
SEA
29h 05m
1 stop
SEA
LHR
20h 10m
1 stop
Depart: Tue Feb 16 2016 Return: Wed Mar 2 2016 Trip spans 16 days
KLM
KLM
LHR
SEA
12h 56m
1 stop
SEA
LHR
16h 11m
1 stop
Depart: Wed Mar 16 2016 Return: Tue Apr 19 2016 Trip spans 35 days
Finnair
Finnair
LHR
SEA
9h 50m
nonstop
SEA
LHR
9h 15m
nonstop
Depart: Wed Apr 20 2016 Return: Sat Apr 30 2016 Trip spans 11 days
Icelandair
Icelandair
LHR
SEA
28h 35m
1 stop
SEA
LHR
19h 40m
1 stop
Depart: Mon Feb 22 2016 Return: Mon Feb 29 2016 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
10h 25m
nonstop
SEA
LHR
10h 03m
nonstop
Depart: Thu Mar 10 2016 Return: Sat Apr 2 2016 Trip spans 23 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
10h 25m
nonstop
SEA
LHR
9h 51m
nonstop
Depart: Thu Mar 3 2016 Return: Tue Mar 22 2016 Trip spans 19 days
Virgin Atlantic
Virgin Atlantic
LHR
SEA
10h 25m
nonstop
SEA
LHR
9h 56m
nonstop
Depart: Mon Aug 29 2016 Return: Mon Sep 5 2016 Trip spans 8 days
Icelandair
Icelandair
LHR
SEA
12h 35m
1 stop
SEA
LHR
11h 45m
1 stop
Depart: Wed Jun 15 2016 Return: Thu Jun 30 2016 Trip spans 16 days
Icelandair
Icelandair
LHR
SEA
22h 05m
1 stop
SEA
LHR
11h 45m
1 stop
Depart: Mon May 9 2016 Return: Mon Jun 6 2016 Trip spans 29 days
$1057
Select
Virgin Atlantic
Virgin Atlantic
LHR
SEA
10h 15m
nonstop
SEA
LHR
9h 58m
nonstop
Depart: Tue Apr 5 2016 Return: Fri Apr 29 2016 Trip spans 25 days
$1123
Select
United
United
LHR
SEA
13h 35m
1 stop
SEA
LHR
16h 24m
1 stop
Depart: Mon Mar 28 2016 Return: Wed Apr 6 2016 Trip spans 10 days
$1127
Select
SAS
SAS
LHR
SEA
19h 57m
2 stops
SEA
LHR
18h 00m
2 stops
Depart: Sun Mar 20 2016 Return: Mon Mar 28 2016 Trip spans 9 days
$1129
Select
SAS
SAS
LHR
SEA
34h 59m
2 stops
SEA
LHR
23h 15m
2 stops
Depart: Sat May 28 2016 Return: Thu Jun 2 2016 Trip spans 6 days
$1151
Select
United
United
LHR
SEA
31h 07m
1 stop
SEA
LHR
12h 40m
1 stop
Depart: Fri Apr 1 2016 Return: Mon Apr 4 2016 Trip spans 4 days
$1166
Select
United
United
LHR
SEA
13h 35m
1 stop
SEA
LHR
14h 21m
1 stop
Depart: Tue Apr 19 2016 Return: Tue May 3 2016 Trip spans 15 days
$1172
Select
Finnair
Finnair
LHR
SEA
9h 35m
nonstop
SEA
LHR
9h 15m
nonstop
Depart: Sun Jul 3 2016 Return: Mon Jul 11 2016 Trip spans 9 days
$1176
Select
Icelandair
Icelandair
LHR
SEA
22h 05m
1 stop
SEA
LHR
11h 15m
1 stop
Depart: Thu Mar 31 2016 Return: Thu Apr 7 2016 Trip spans 8 days
$1244
Select
Delta
Delta
LHR
SEA
10h 19m
nonstop
SEA
LHR
9h 51m
nonstop
Depart: Tue Jun 14 2016 Return: Mon Jun 20 2016 Trip spans 7 days
$1247
Select
Air Canada
Air Canada
LHR
SEA
13h 01m
1 stop
SEA
LHR
14h 05m
1 stop
Depart: Sun Feb 14 2016 Return: Sat Feb 20 2016 Trip spans 7 days
$1325
Select
American Airlines
American Airlines
LHR
SEA
17h 22m
1 stop
SEA
LHR
15h 35m
1 stop
Direct flights LHR to SEA on Delta
Flight # Depart LHR Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
36 12:55 pm 4:20 pm Mar 13 - Mar 25
36 12:55 pm 3:20 pm Mar 1 - Mar 12
36 12:55 pm 3:20 pm Feb 19 - Feb 29
36 12:55 pm 3:20 pm Feb 11 - Feb 17
36 3:00 pm 5:25 pm Feb 25 - Feb 25
36 3:00 pm 5:25 pm Feb 20 - Feb 27
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
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 don'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.

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

London
$684
Destination

Seattle
$684