Cheap flights from London Heathrow Airport to Seattle from £365

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Flight information for London Heathrow Airport to Seattle
(LHR to SEA)

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Seattle

Best price found

£365

Fastest flight time

9h 45m

Direct flights

None

Airports in Seattle

3 airports
The best one-way flight to Seattle from London Heathrow Airport in the past 72 hours is £365. The best return flight deal from London Heathrow Airport to Seattle found on momondo in the last 72 hours is £357.
The fastest flight from London Heathrow Airport to Seattle takes 9h 45m
There are no direct flights from London Heathrow Airport to Seattle. Popular non-direct route for this connection is London Heathrow Airport - Seattle/Tacoma Intl Airport.
There 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 Heathrow Airport 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 Heathrow Airport to Seattle?

February

The cheapest time of year to fly to Seattle from London Heathrow Airport is February. The most expensive is December.

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

Icelandair

Air Canada, Delta, and Icelandair are the most popular carriers operating from London Heathrow Airport to Seattle

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

60 days before

The cheapest time to buy a flight from London Heathrow Airport to Seattle is approximately 60 days to departure

If you are looking to fly from London to Seattle, you are most likely going to fly from London Heathrow Airport to Seattle/Tacoma Intl Airport, the most popular airports on that route. In June, £437 is typically the cheapest round trip price you’ll find from London to Seattle which you can find when you fly LHR — SEA.

London Heathrow Airport (LHR) to Seattle/Tacoma Intl Airport (SEA)£437
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Easily compare return flights from London Heathrow Airport 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 Heathrow Airport to Seattle by changing tabs
Icelandair
8 Dec
LHR15:25London Heathrow
28h 30m
1 stop
SEA19:55Seattle/Tacoma Intl
15 Dec
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Virgin Atlantic
8 Nov
LHR13:50London Heathrow
24h 40m
1 stop
SEA14:30Seattle/Tacoma Intl
15 Nov
SEA01:00Seattle/Tacoma Intl
16h 40m
1 stop
LHR17:40London Heathrow
Lufthansa
18 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
27 Oct
SEA06:45Seattle/Tacoma Intl
15h 15m
2 stops
LHR22:00London Heathrow
Multiple Airlines
5 Sep
LHR06:20London Heathrow
15h 20m
1 stop
SEA21:40Seattle/Tacoma Intl
25 Jan
SEA13:25Seattle/Tacoma Intl
9h 25m
LHR22:50London Heathrow
Air Canada
19 Oct
LHR08:05London Heathrow
15h 23m
1 stop
SEA23:28Seattle/Tacoma Intl
13 Nov
SEA04:35Seattle/Tacoma Intl
13h 35m
1 stop
LHR18:10London Heathrow
Icelandair
3 Oct
LHR17:25London Heathrow
28h 30m
1 stop
SEA21:55Seattle/Tacoma Intl
13 Oct
SEA11:50Seattle/Tacoma Intl
12h 05m
1 stop
LHR23:55London Heathrow

Find the cheapest one-way flights from London Heathrow Airport to Seattle

If you're looking for one-way flights from London Heathrow Airport to Seattle, view some of our deals below provided by Virgin Atlantic and WestJet
Multiple Airlines
31 Oct
LHR02:35London Heathrow
33h 30m
3 stops
SEA12:05Seattle/Tacoma Intl
Virgin Atlantic
26 Nov
LHR04:00London Heathrow
13h 10m
1 stop
SEA17:10Seattle/Tacoma Intl
WestJet
19 Oct
LHR10:15London Heathrow
12h 19m
1 stop
SEA22:34Seattle/Tacoma Intl

Search last-minute flights to Seattle from London Heathrow Airport

Find and compare return flight prices for your last-minute flight from London Heathrow Airport to Seattle
United Airlines
6 Jul
LHR04:30London Heathrow
24h 15m
2 stops
SEA04:45Seattle/Tacoma Intl
13 Jul
SEA03:00Seattle/Tacoma Intl
15h 55m
1 stop
LHR18:55London Heathrow
Multiple Airlines
6 Jul
LHR12:40London Heathrow
36h 49m
1 stop
SEA01:29Seattle/Tacoma Intl
13 Jul
SEA02:00Seattle/Tacoma Intl
21h 50m
1 stop
LHR23:50London Heathrow
Virgin Atlantic
7 Jul
LHR11:10London Heathrow
10h 10m
SEA21:20Seattle/Tacoma Intl
14 Jul
SEA09:29Seattle/Tacoma Intl
16h 01m
1 stop
LHR01:30London Heathrow
Air France
4 Jul
LHR10:05London Heathrow
17h 31m
1 stop
SEA03:36Seattle/Tacoma Intl
8 Jul
SEA15:35Seattle/Tacoma Intl
9h 40m
LHR01:15London Heathrow
British Airways
6 Jul
LHR09:05London Heathrow
15h 54m
1 stop
SEA00:59Seattle/Tacoma Intl
27 Jul
SEA07:48Seattle/Tacoma Intl
14h 42m
1 stop
LHR22:30London Heathrow
Iberia
6 Jul
LHR05:40London Heathrow
9h 45m
SEA15:25Seattle/Tacoma Intl
13 Jul
SEA09:35Seattle/Tacoma Intl
9h 15m
LHR18:50London Heathrow

Best airlines flying from London Heathrow Airport to Seattle

Compare and see reviews for airlines that fly from London Heathrow Airport to Seattle with momondo
AirlineRatingFree CancellationPrice
IcelandairPriceFrom £371Free CancellationRating
7.3
Search Icelandair flights
American AirlinesPriceFrom £377Free CancellationRating
7.1
Search American Airlines flights
DeltaPriceFrom £380Free CancellationRating
7.8
Search Delta flights
United AirlinesPriceFrom £380Free CancellationRating
7.2
Search United Airlines flights
LufthansaPriceFrom £418Free CancellationRating
7.3
Search Lufthansa flights
Air CanadaPriceFrom £427Free CancellationRating
7.4
Search Air Canada flights
British AirwaysPriceFrom £441Free CancellationRating
6.5
Search British Airways flights
FinnairPriceFrom £441Free CancellationRating
7.6
Search Finnair flights
Aer LingusPriceFrom £446Free CancellationRating
8.1
Search Aer Lingus flights
Virgin AtlanticPriceFrom £448Free CancellationRating
7.9
Search Virgin Atlantic flights
  • Aer Lingus Flights From London Heathrow Airport to Seattle

    Aer Lingus operates around 9 flights from London Heathrow Airport to Seattle every week. The average price of these flights found in the last 72 hours has been £825, but momondo users have found Aer Lingus deals from London Heathrow Airport to Seattle from as low as £546 return. Aer Lingus has been scored 8.1/10 in 81 reviews.

  • Virgin Atlantic Flights From London Heathrow Airport to Seattle

    Virgin Atlantic (7.9/10 from 64 reviews) operates around 12 flights from London Heathrow Airport to Seattle in any given week. The average Virgin Atlantic airfare for this route is around £811, with deals from around £548 rare but found on momondo. Referenced prices are for return London Heathrow Airport to Seattle flight searches in the last 72 hours.


Icelandair flights from London Heathrow Airport to Seattle

Our best Icelandair deals on London Heathrow Airport to Seattle flight tickets
Icelandair
8 Dec
LHR15:25London Heathrow
28h 30m
1 stop
SEA19:55Seattle/Tacoma Intl
15 Dec
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Icelandair
3 Oct
LHR17:25London Heathrow
28h 30m
1 stop
SEA21:55Seattle/Tacoma Intl
13 Oct
SEA11:50Seattle/Tacoma Intl
12h 05m
1 stop
LHR23:55London Heathrow
Icelandair
18 Nov
LHR07:05London Heathrow
12h 50m
1 stop
SEA19:55Seattle/Tacoma Intl
21 Nov
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow

Lufthansa flights from London Heathrow Airport to Seattle

Our best Lufthansa deals on London Heathrow Airport to Seattle flight tickets
Lufthansa
18 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
27 Oct
SEA06:45Seattle/Tacoma Intl
15h 15m
2 stops
LHR22:00London Heathrow
Lufthansa
5 Nov
LHR02:30London Heathrow
13h 50m
1 stop
SEA16:20Seattle/Tacoma Intl
12 Nov
SEA05:30Seattle/Tacoma Intl
17h 20m
1 stop
LHR22:50London Heathrow
Lufthansa
8 Oct
LHR07:05London Heathrow
16h 23m
1 stop
SEA23:28Seattle/Tacoma Intl
22 Oct
SEA06:45Seattle/Tacoma Intl
15h 15m
2 stops
LHR22:00London Heathrow

  • Are airlines flying from London Heathrow 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 Heathrow to Seattle/Tacoma Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travellers: Virgin Atlantic, British Airways, and Finnair.

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

    The distance between London Heathrow and Seattle/Tacoma Intl is about 4774.1 mi. A reasonable flight in good conditions will take 12h 50m.



Alternative routes for London Heathrow Airport to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
London to Seattle Flights
Fastest flight time9h 45m
Cheapest price£437
London to Spokane Flights
Fastest flight time14h 08m
Cheapest price£504
London to Bellingham Flights
Fastest flight time13h 00m
Cheapest price£1,375
London to Pasco Flights
Fastest flight time16h 48m
Cheapest price£843

Similar London Heathrow Airport to Seattle flights

Flexible with your destination? Broaden your search and find flights similar to your London Heathrow Airport to Seattle route

Why use momondo?

Finding the right flight to Seattle from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Flights from London to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

Once all potential London to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

Of course. momondo tracks the price of London to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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