Cheap flights from London to Seattle

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Tue 21/9
Tue 28/9

Travel Restriction Alert

The COVID-19 (coronavirus) outbreak may impact travel from London to Seattle.
View current United States travel restrictions

Flight information for London to Seattle
(LON to SEA)

Find info about flight duration, direct flights, and airports for your flight from London to Seattle
Best price found£260The best flight deal from London to Seattle found on momondo in the last 72 hours is £260
Fastest flight time9h 45mThe fastest flight from London to Seattle takes 9h 45m
Direct flightsNoneThere are no direct flights from London to Seattle. Popular non-direct routes for this connection are London Gatwick Airport - Seattle/Tacoma Intl Airport, London Heathrow Airport - Seattle/Tacoma Intl Airport and London City Airport - Seattle/Tacoma Intl Airport.
Airports in Seattle3 airportsThere are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

How to get the cheapest flight ticket from London to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from London to Seattle?

February

The cheapest time of year to fly to Seattle from London is February. The most expensive is July.

What is the cheapest day to depart London for Seattle?

Tuesday

The cheapest day of the week is usually Tuesday. The most expensive is usually Sunday.

When is the cheapest time to fly from London to Seattle?

in the evening

London to Seattle flights are approximately 15% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to Seattle from London?

Austrian Airlines

Air Canada, American Airlines, and Austrian Airlines are the most popular carriers operating from London to Seattle

What is the cheapest London to Seattle flight route?

London Heathrow - Seattle/Tacoma Intl

Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Seattle flight prices

How far in advance should you book London to Seattle flights?

51 days before

The cheapest time to buy a flight from London to Seattle is approximately 51 days to departure


Easily compare return flights from London to Seattle

Below you can see the best fares for your return flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from London to Seattle by changing tabs
KLM
31 Jan
LHR01:30London Heathrow
12h 35m
1 stop
SEA14:05Seattle/Tacoma Intl
14 Feb
SEA10:40Seattle/Tacoma Intl
9h 20m
LHR20:00London Heathrow
KLM
31 Jan
LHR01:30London Heathrow
12h 35m
1 stop
SEA14:05Seattle/Tacoma Intl
9 Feb
SEA10:40Seattle/Tacoma Intl
9h 20m
LHR20:00London Heathrow
Icelandair
2 Feb
LHR07:05London Heathrow
12h 50m
1 stop
SEA19:55Seattle/Tacoma Intl
7 Feb
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Icelandair
1 Dec
LHR07:05London Heathrow
12h 50m
1 stop
SEA19:55Seattle/Tacoma Intl
6 Dec
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Lufthansa
31 Jan
LHR01:30London Heathrow
13h 50m
1 stop
SEA15:20Seattle/Tacoma Intl
7 Feb
SEA10:15Seattle/Tacoma Intl
12h 05m
1 stop
LHR22:20London Heathrow
Lufthansa
3 Nov
LHR02:30London Heathrow
13h 50m
1 stop
SEA16:20Seattle/Tacoma Intl
23 Nov
SEA10:15Seattle/Tacoma Intl
12h 05m
1 stop
LHR22:20London Heathrow

Find the cheapest one-way flights from London to Seattle

If you're looking for one-way flights from London to Seattle, view some of our deals below provided by Lufthansa, SWISS and WestJet
Lufthansa
9 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
Lufthansa
4 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
Lufthansa
4 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl

Search last-minute flights to Seattle from London

Find and compare flight prices for your last-minute flight from London to Seattle
Lufthansa
21 Sep
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
20 Oct
SEA11:45Seattle/Tacoma Intl
11h 20m
1 stop
LHR23:05London Heathrow
Icelandair
23 Sep
LHR09:10London Heathrow
13h 30m
1 stop
SEA22:40Seattle/Tacoma Intl
12 Oct
SEA11:50Seattle/Tacoma Intl
12h 05m
1 stop
LHR23:55London Heathrow
Lufthansa
20 Sep
LCY03:50London City
12h 40m
1 stop
SEA16:30Seattle/Tacoma Intl
18 Oct
SEA10:20Seattle/Tacoma Intl
20h 25m
1 stop
LCY06:45London City
Lufthansa
20 Sep
LCY03:50London City
12h 40m
1 stop
SEA16:30Seattle/Tacoma Intl
18 Oct
SEA08:25Seattle/Tacoma Intl
22h 20m
2 stops
LCY06:45London City
Brussels Airlines
21 Sep
LHR02:45London Heathrow
22h 15m
2 stops
SEA01:00Seattle/Tacoma Intl
18 Oct
SEA06:51Seattle/Tacoma Intl
12h 49m
1 stop
LHR19:40London Heathrow
Multiple Airlines
25 Sep
LHR02:45London Heathrow
22h 15m
2 stops
SEA01:00Seattle/Tacoma Intl
28 Sep
SEA04:15Seattle/Tacoma Intl
14h 30m
1 stop
LHR18:45London Heathrow

Best airlines flying from London to Seattle

Compare and see reviews for airlines that fly from London to Seattle with momondo
AirlineRatingFree cancellationPrice
Austrian Airlines
PriceFrom £225
Free cancellation
Rating
7.2
United Airlines
PriceFrom £242
Free cancellation
Rating
6.8
Air Canada
PriceFrom £259
Free cancellation
Rating
7.5
Lufthansa
PriceFrom £271
Free cancellation
Rating
7.4
Norwegian Air UK
PriceFrom £279
Free cancellation
Rating
2.0
KLM
PriceFrom £281
Free cancellation
Rating
7.9
Iberia
PriceFrom £291
Free cancellation
Rating
6.9
Virgin Atlantic
PriceFrom £293
Free cancellation
Rating
9.3
American Airlines
PriceFrom £295
Free cancellation
Rating
7.2
Delta
PriceFrom £296
Free cancellation
Rating
8.3

  • Are airlines flying from London to Seattle/Tacoma Intl offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from London to Seattle/Tacoma Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travellers: British Airways, Virgin Atlantic, and United Airlines.

  • How far is London to Seattle/Tacoma Intl by plane?

    A flight from London to Seattle/Tacoma Intl will travel around 4781.3 mi. By plane, this route typically takes 12h 35m.


Can I fly to Seattle/Tacoma Intl from London right now?

Information is based on travel restrictions from London to Seattle/Tacoma Intl

Most visitors from London will not be allowed to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from London are not required to quarantine after entering Seattle/Tacoma Intl.

Can I fly back to London from Seattle/Tacoma Intl?

Returning to London from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering London.

If you are planning to travel to Seattle at this time, it is recommended that you stay up to date on current restrictions and follow proper safety measures while in public.

Alternative routes for London to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Birmingham to Seattle Flights
Fastest flight time14h 15m
Cheapest price£382
Manchester to Seattle Flights
Fastest flight time13h 45m
Cheapest price£388
Newcastle upon Tyne to Seattle Flights
Fastest flight time13h 05m
Cheapest price£445
Southampton to Seattle Flights
Fastest flight time25h 45m
Cheapest price£465
Bristol to Seattle Flights
Fastest flight time12h 50m
Cheapest price£466
Leeds to Seattle Flights
Fastest flight time12h 55m
Cheapest price£505
London to Spokane Flights
Fastest flight time17h 36m
Cheapest price£508
Manchester to Spokane Flights
Fastest flight time19h 09m
Cheapest price£522
London to Bellingham Flights
Fastest flight time38h 08m
Cheapest price£630
Birmingham to Spokane Flights
Fastest flight time23h 11m
Cheapest price£788
London to Pasco Flights
Fastest flight time13h 04m
Cheapest price£889
Newquay to Seattle Flights
Fastest flight time40h 27m
Cheapest price£1,528