Flights from Seattle Tacoma to London Heathrow

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Our cheapest offers for flights from Seattle Tacoma to London Heathrow

Here you can compare cheap flights from Seattle Tacoma (SEA) to London Heathrow (LHR) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to London Heathrow. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0454
20h 55min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair
$828
Best option
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
direct
BA0052
09h 25min
Return
12/31/24
1 Stopover (PHL)
BA0067, BA5437
16h 44min
British Airways ?
$1,017
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0454
20h 55min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair
$829
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0450
12h 15min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair ?
$847
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0454
20h 55min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair ?
$857
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0454
20h 55min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair ?
$876
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0454
20h 55min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair
$881
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0450
12h 15min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair ?
$896
Seattle-Tacoma
London Heathrow
Outbound
12/13/24
1 Stopover (KEF)
FI0680, FI0450
12h 15min
Return
12/31/24
1 Stopover (KEF)
FI0451, FI0681
12h 45min
Icelandair ?
$921
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Seattle Tacoma to London Heathrow

Favorite airline: Icelandair
The majority of passengers on the route Seattle-Tacoma – London Heathrow prefer to fly with Icelandair.
Icelandair
39 %
Virgin Atlantic
23 %
Air Canada
14 %
Direct flights are more expensive
Flights with a stopover are on average $138.00 cheaper than direct flights.
non stop flight
1 stop
2 stops
09h 20min
19h 55min
20h 00min
$601
$463
$1,060
Favourite connection: via Reykjavik-Keflavik
54 % of booked tickets on this route are for flights with a transfer in Reykjavik-Keflavik.
Route
bookings
1 stopover Reykjavik-Keflavik International
19h 55min, from $463
54 %
Direct flights
09h 20min, from $601
22 %
1 stopover Dublin
13h 45min, from $600
10 %

Important flight information

Flight information: Seattle-Tacoma - London Heathrow

Roundtrip from $827.83
Flight duration min. 09:20 / max. 09:30
Return flight duration min. 09:50/ max. 09:55
Distance 7710 km
Flights per week 19
Departure airport Airport Seattle-Tacoma International Airport, WA (SEA)
Arrival airport Airport London Heathrow (LHR)
Destination country Flights to United Kingdom
Alternative routes to United Kingdom
Alternative flights to London Heathrow
Flight destinations with a similar price
Flight destinations with a similar price
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.