Flights from Seattle Airport (SEA) to Heathrow Airport Airport (LHR)

We've found the cheapest flights to London

Returns from £521.05

One-way from £313.59

Flying from Seattle-Tacoma International to London Heathrow is relatively easy as there are 13 who offer direct flights. These airliners include AlphaSky, Singapore Airlines, Aeromexico, Iberia, Finnair, American Airlines, Alaska Airlines, Aer Lingus, Virgin Atlantic, KLM, Air France, British Airways and Delta Air Lines. The flight time is approximately 9 Hours 52 Minutes.

The most expensive flight prices are typically at weekends and daytime flights. The cheapest flights available will generally be mid week or late in the evening, so if you are on a budget then these are the flight times you should consider. Alternatively, you could book well in advance and you flight could be up to 50% cheaper, especially with budget airliners. Flight to London Heathrow will get more expensive the nearer you get the departure date, so it’s advisable to book in advance if it is possible.

The time zone at London Heathrow is different from Seattle-Tacoma International, so please be aware of this when making travel arrangements.

To see all airliners that offer flights between Seattle-Tacoma International and London Heathrow please see the table below.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Delta Air Lines212222212:4019:30VIEW FLIGHTS
British Airways122122207:0018:50VIEW FLIGHTS
Virgin Atlantic112222112:4019:30VIEW FLIGHTS
KLM112222112:4019:30VIEW FLIGHTS
Air France112222112:4019:30VIEW FLIGHTS
Iberia121122013:3518:50VIEW FLIGHTS
Finnair121122013:3518:50VIEW FLIGHTS
American Airlines121122013:3518:50VIEW FLIGHTS
Alaska Airlines121122013:3518:50VIEW FLIGHTS
Aer Lingus121122013:3518:50VIEW FLIGHTS
Singapore Airlines111111117:4517:45VIEW FLIGHTS
Aeromexico111111117:4517:45VIEW FLIGHTS
AlphaSky110112012:1512:15VIEW FLIGHTS

Flights from Seattle-Tacoma International to London Heathrow are very limited. Only Delta Air Lines operate flights, of which there is only 1 per week. The time of the departure for this flight is 12:40

If you would like more information on this flight the please visit the website for Delta Air Lines at delta.com. You will be able to find the latest availability, prices and make your booking online.

Flight times for the route are summarised in the table below. These time were correct at the time of writing, but please be aware that times may vary from time to time so please check their website for exact times and the dates you wish to fly.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
12:15
AirlineFlight  No
AlphaSkyAS5270
12:40
AirlineFlight  No
Delta Air LinesDL20
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Tuesday
12:15
AirlineFlight  No
AlphaSkyAS5270
13:35
AirlineFlight  No
FinnairAY5450
Aer LingusEI8752
Alaska AirlinesAS5272
American AirlinesAA6909
British AirwaysBA52
IberiaIB3508
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Wednesday
07:00
AirlineFlight  No
British AirwaysBA52
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
18:55
AirlineFlight  No
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
VIEW FLIGHTS
Thursday
12:15
AirlineFlight  No
AlphaSkyAS5270
12:40
AirlineFlight  No
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Friday
12:15
AirlineFlight  No
AlphaSkyAS5270
13:45
AirlineFlight  No
FinnairAY5450
Aer LingusEI8752
Alaska AirlinesAS5272
American AirlinesAA6909
British AirwaysBA52
IberiaIB3508
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
19:30
AirlineFlight  No
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
VIEW FLIGHTS
Saturday
07:10
AirlineFlight  No
AlphaSkyAS5272
12:15
AirlineFlight  No
AlphaSkyAS5270
13:10
AirlineFlight  No
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
13:45
AirlineFlight  No
FinnairAY5450
Aer LingusEI8752
Alaska AirlinesAS5272
American AirlinesAA6909
British AirwaysBA52
IberiaIB3508
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Sunday
07:10
AirlineFlight  No
British AirwaysBA52
17:45
AirlineFlight  No
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlight  No
British AirwaysBA48
18:55
AirlineFlight  No
Delta Air LinesDL20
VIEW FLIGHTS

If the airlines stated don’t offer flights that suite your travel times, you could look at alternative options. Below we have summarised flights from alternative departures airports and flights that are not direct.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Richmond Vancouver to Heathrow09 Hours 43 Minutes

Before you book your flights make sure you your passport is valid and preferably has at least 6 months or more left before it expires. To renew your passport it can take several weeks to renew and with many airliners flights are not refundable.

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Flight Price FAQ - Seattle (SEA) to London (LHR)

DIRECT Virgin Atlantic
What is the cheapest direct flight one way from Seattle SEA to London LHR?
The cheapest direct flight one way from Seattle SEA to London LHR is £313.59 ($393 €377.87)
£313.59
$393 | €377.87
Check Latest Price
DIRECT Virgin Atlantic
What is the cheapest direct return flight from Seattle SEA to London LHR?
The cheapest direct return flight from Seattle SEA to London LHR is £521.05 ($653 €627.86)
£521.05
$653 | €627.86
Check Latest Price
1+ STOP(S)
What is the cheapest flight one way from Seattle SEA to London LHR?
The cheapest flight one way from Seattle SEA to London LHR is £189.11 ($237 €227.88)
£189.11
$237 | €227.88
Check Latest Price
1+ STOP(S)
What is the cheapest return flight from Seattle SEA to London LHR?
The cheapest return flight from Seattle SEA to London LHR is £481.16 ($603 €579.78)
£481.16
$603 | €579.78
Check Latest Price
Important Note: Prices shown are taken from searches performed for flights operating during the current month. Please use the "Latest Price" buttons to get the most up to date airfares.

Compare Flight Prices from SEA to LHR

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Flight Info FAQ - Seattle (SEA) to London (LHR)

Who flies from Seattle to London?
The following airlines fly from Seattle (SEA) to London (LHR): Aer Lingus, Aeromexico, Air France, Alaska Airlines, AlphaSky, American Airlines, British Airways, Delta Air Lines, Finnair, Iberia, KLM, Singapore Airlines, Virgin Atlantic.
How far is the flight from Seattle to London?
The flight from Seattle to London is 7,702KM or 4,786 miles.
How long does the flight from Seattle to London to take?
The flight from Seattle to London takes 9 Hours 52 Minutes.

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