Flights from Seattle Airport SEA to London Airport LHR

We've found the cheapest flights to London

Returns from £522.12

One-way from £314.23

You have a choice of 13 airline companies when flying from Seattle-Tacoma International to London Heathrow. The flight time from Seattle-Tacoma International to London Heathrow is around 9 Hours 52 Minutes and you will cover 7,702 Km (4,786 Miles). The airport code for Seattle-Tacoma International is SEA and for London Heathrow it is LHR.

The cost of your trip (flights) can change at weekends and at certain times of the day (if there is a choice of flights to your chosen destination. If you are looking to get the cheapest flights possible then we recommend you travel mid week or in the late evening. On occasions, airliners may have special offers so look out for these. We recommend booking your flights to London Heathrow United Kingdom in advance as prices normally increase the nearer the departure date.

Please note that the time difference at London Heathrow is 0.0 GMT. So remember to change your watch before arriving at London Heathrow.

The table below displays the numbers of daily flights from Seattle-Tacoma International (SEA) to London Heathrow (LHR) and the relevant airlines that fly.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Delta Air Lines212222212:4019:30VIEW FLIGHTS
Virgin Atlantic112222112:4019:30VIEW FLIGHTS
KLM112222112:4019:30VIEW FLIGHTS
Air France112222112:4019:30VIEW FLIGHTS
British Airways111122207:1018:50VIEW FLIGHTS
Iberia111122013:4518:50VIEW FLIGHTS
Finnair111122013:4518:50VIEW FLIGHTS
American Airlines111122013:4518:50VIEW FLIGHTS
Alaska Airlines111122013:4518:50VIEW FLIGHTS
Aer Lingus111122013:4518:50VIEW FLIGHTS
Singapore Airlines111111117:4517:45VIEW FLIGHTS
AlphaSky111112012:1512:15VIEW FLIGHTS
Aeromexico111111117:4517:45VIEW FLIGHTS

Currently Delta Air Lines offer the most direct flights from to London Heathrow from Seattle-Tacoma International with only 1 flight weekly. The time of the departure is 12:40

When travelling with Delta Air Lines it would be worth visiting their website delta.com for further information on bookings and special offers.

Below you can see the times of all flights. These flight times do vary so we recommend you look on the appropriate airline website for accurate information for the dates you are departing.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
12:15
AirlineFlightNo
AlphaSkyAS5270
12:40
AirlineFlightNo
Delta Air LinesDL20
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Tuesday
12:15
AirlineFlightNo
AlphaSkyAS5270
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Wednesday
12:15
AirlineFlightNo
AlphaSkyAS5270
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
18:55
AirlineFlightNo
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
VIEW FLIGHTS
Thursday
12:15
AirlineFlightNo
AlphaSkyAS5270
12:40
AirlineFlightNo
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Friday
12:15
AirlineFlightNo
AlphaSkyAS5270
13:45
AirlineFlightNo
FinnairAY5450
Aer LingusEI8752
Alaska AirlinesAS5272
American AirlinesAA6909
British AirwaysBA52
IberiaIB3508
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
19:30
AirlineFlightNo
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
VIEW FLIGHTS
Saturday
07:10
AirlineFlightNo
AlphaSkyAS5272
12:15
AirlineFlightNo
AlphaSkyAS5270
13:10
AirlineFlightNo
Air FranceAF3603
KLMKL6021
Delta Air LinesDL20
Virgin AtlanticVS4037
13:45
AirlineFlightNo
FinnairAY5450
Aer LingusEI8752
Alaska AirlinesAS5272
American AirlinesAA6909
British AirwaysBA52
IberiaIB3508
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
FinnairAY5448
Aer LingusEI8748
Alaska AirlinesAS5270
American AirlinesAA6907
British AirwaysBA48
IberiaIB3506
VIEW FLIGHTS
Sunday
07:10
AirlineFlightNo
British AirwaysBA52
17:45
AirlineFlightNo
AeromexicoAM7671
Singapore AirlinesSQ2516
Air FranceAF9905
KLMKL4813
Delta Air LinesDL5974
Virgin AtlanticVS106
18:50
AirlineFlightNo
British AirwaysBA48
18:55
AirlineFlightNo
Delta Air LinesDL20
VIEW FLIGHTS

Instead of flying directly from Seattle-Tacoma International and arrive at London Heathrow, you may arrive London Heathrow by another airport. Please see chart below for a list of these.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Richmond Vancouver to Heathrow07,579 km (4,709 miles)9 Hours 43 Minutes

Remember to have some local currency before travelling to London Heathrow as there may not be a bureau de change open upon your arrival.

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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 £314.23 ($393 €378.16)
£314.23
$393 | €378.16
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 £522.12 ($653 €628.35)
£522.12
$653 | €628.35
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 £189.50 ($237 €228.05)
£189.50
$237 | €228.05
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 £482.14 ($603 €580.24)
£482.14
$603 | €580.24
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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