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Cheap flights from the United Kingdom to Washington from £256

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Washington departing on 14/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from the United Kingdom to Washington

Recent return flight deals from the United Kingdom to Washington

Virgin Atlantic Logo
17:25 - 19:50LHR-SEA
10h 25mdirect
Virgin Atlantic Logo
20:25 - 14:15SEA-LHR
9h 50mdirect
£445Virgin Atlantic
Find Deal
Mon, 29 Sep - Mon, 13 Oct
Multiple Airlines Logo
06:30 - 11:55LHR-SEA
13h 25m1 stop
Multiple Airlines Logo
08:00 - 06:40SEA-LHR
14h 40m1 stop
£446Multiple Airlines
Find Deal
Mon, 20 Oct - Sun, 9 Nov
Lufthansa Logo
06:55 - 16:59LHR-SEA
18h 04m1 stop
Lufthansa Logo
13:12 - 10:40SEA-LHR
13h 28m1 stop
£447Lufthansa
Find Deal
Fri, 17 Oct - Sun, 19 Oct
Icelandair Logo
15:40 - 20:40LGW-SEA
13h 00m1 stop
Icelandair Logo
19:00 - 14:40SEA-LGW
11h 40m1 stop
£447Icelandair
Find Deal
Wed, 8 Oct - Wed, 15 Oct
Icelandair Logo
15:40 - 20:40LGW-SEA
13h 00m1 stop
Icelandair Logo
14:35 - 10:55SEA-LGW
12h 20m1 stop
£452Icelandair
Find Deal
Wed, 22 Oct - Thu, 13 Nov
British Airways Logo
14:55 - 17:55LHR-SEA
10h 00mdirect
British Airways Logo
19:50 - 12:20SEA-LHR
9h 30mdirect
£453British Airways
Find Deal
Tue, 10 Mar - Tue, 17 Mar
British Airways Logo
14:55 - 16:55LHR-SEA
10h 00mdirect
British Airways Logo
18:50 - 12:20SEA-LHR
9h 30mdirect
£454British Airways
Find Deal
Tue, 24 Feb - Tue, 3 Mar
Air France Logo
12:20 - 14:48LHR-SEA
10h 28mdirect
Air France Logo
16:48 - 10:30SEA-LHR
9h 42mdirect
£475Air France
Find Deal
Wed, 5 Nov - Mon, 10 Nov
KLM Logo
09:20 - 16:05LCY-SEA
14h 45m1 stop
KLM Logo
17:40 - 16:40SEA-LCY
15h 00m1 stop
£518KLM
Find Deal
Wed, 8 Oct - Thu, 16 Oct
KLM Logo
10:00 - 16:05LCY-SEA
14h 05m1 stop
KLM Logo
09:29 - 08:50SEA-LCY
15h 21m2 stops
£536KLM
Find Deal
Wed, 1 Oct - Wed, 15 Oct

Aer Lingus flights from United Kingdom to State of Washington

Our best Aer Lingus deals on United Kingdom to State of Washington flight tickets
Aer Lingus
24 Nov
MAN13:55Manchester
12h 25m
1 stop
SEA18:20Seattle/Tacoma Intl
28 Nov
SEA20:05Seattle/Tacoma Intl
12h 35m
1 stop
MAN16:40Manchester
£565
Find similar
Aer Lingus
21 Sept
LCY17:50London City
32h 00m
1 stop
SEA17:50Seattle/Tacoma Intl
28 Sept
SEA19:35Seattle/Tacoma Intl
18h 05m
1 stop
LCY21:40London City
£750
Find similar

Delta flights from United Kingdom to State of Washington

Our best Delta deals on United Kingdom to State of Washington flight tickets
Delta
3 Nov
LHR06:30London Heathrow
13h 15m
1 stop
SEA11:45Seattle/Tacoma Intl
10 Nov
SEA16:48Seattle/Tacoma Intl
9h 42m
LHR10:30London Heathrow
£461
Find similar
Delta
29 Sept
LHR06:30London Heathrow
13h 15m
1 stop
SEA11:45Seattle/Tacoma Intl
13 Oct
SEA17:35Seattle/Tacoma Intl
9h 45m
LHR11:20London Heathrow
£463
Find similar
Delta
29 Sept
LHR06:30London Heathrow
13h 15m
1 stop
SEA11:45Seattle/Tacoma Intl
13 Oct
SEA23:10Seattle/Tacoma Intl
23h 35m
1 stop
LHR06:45London Heathrow
£464
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to State of Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 19 September 2025.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 29/9

17:25-19:50

Nonstop10h 25m

Seattle/Tacoma Intl

Mon 13/10

20:25-14:15

Nonstop9h 50m

£445

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 20/10

06:30-11:55

1 stop13h 25m

Seattle/Tacoma Intl

Sun 9/11

08:00-06:40

1 stop14h 40m

£446

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 17/10

06:55-16:59

1 stop18h 04m

Seattle/Tacoma Intl

Sun 19/10

13:12-10:40

1 stop13h 28m

£447

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 8/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Wed 15/10

19:00-14:40

1 stop11h 40m

£447

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 22/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Thu 13/11

14:35-10:55

1 stop12h 20m

£452

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/3

14:55-17:55

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 17/3

19:50-12:20

Nonstop9h 30m

£453

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 24/2

14:55-16:55

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 3/3

18:50-12:20

Nonstop9h 30m

£454

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 5/11

12:20-14:48

Nonstop10h 28m

Seattle/Tacoma Intl

Mon 10/11

16:48-10:30

Nonstop9h 42m

£475

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 8/10

09:20-16:05

1 stop14h 45m

Seattle/Tacoma Intl

Thu 16/10

17:40-16:40

1 stop15h 00m

£518

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 1/10

10:00-16:05

1 stop14h 05m

Seattle/Tacoma Intl

Wed 15/10

09:29-08:50

2 stops15h 21m

£536

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from United Kingdom to State of Washington

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 to State of Washington?

If you aren’t able to travel to State of Washington during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £486.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from United Kingdom to State of Washington is on a Wednesday. Travellers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as £583. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Sunday is £689.

What is the cheapest time of day to depart on your flight to State of Washington?

Flying to State of Washington from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £514 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to State of Washington is in the afternoon when prices are around £620.

What is the cheapest United Kingdom to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around £565 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from United Kingdom for as low as £511 on momondo.

What cabin class options are available on United Kingdom to Washington flights?

There are 4 cabin classes available to choose from on United Kingdom to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United Kingdom to State of Washington flights?

No. A direct flight is the cheapest option for a flight between United Kingdom to State of Washington.

Cheap United Kingdom to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to State of Washington

Best price found

£577

Fastest flight time

9h 45m

Direct flights

Every day

Airports in State of Washington

2 airports
The best one-way flight to State of Washington from United Kingdom in the past 72 hours is £577. The best return flight deal from United Kingdom to State of Washington found on momondo in the last 72 hours is £513.
The fastest flight from United Kingdom to State of Washington takes 9h 45m
Direct flights go from United Kingdom to State of Washington every day.
There are 2 airports near State of Washington: Portland (PDX), Seattle/Tacoma Intl (SEA)
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Washington?

    Prices for flights from United Kingdom to Washington were last updated today.

  • How many operators does momondo search for flights from United Kingdom to Washington?

  • How old do you have to be to fly from United Kingdom to Washington?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Washington.

  • What documentation or ID do you need to fly to Washington?

    The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United Kingdom to State of Washington?

Best airlines flying from United Kingdom to State of Washington

Compare and see reviews for airlines that fly from United Kingdom to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £321Free CancellationRating
7.0
545 reviews
Search Icelandair flights
Air FrancePriceFrom £380Free CancellationRating
7.4
1,468 reviews
Search Air France flights
LufthansaPriceFrom £390Free CancellationRating
6.8
7,415 reviews
Search Lufthansa flights
FinnairPriceFrom £392Free CancellationRating
7.6
1,325 reviews
Search Finnair flights
KLMPriceFrom £399Free CancellationRating
7.8
1,386 reviews
Search KLM flights
United AirlinesPriceFrom £400Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Aer LingusPriceFrom £402Free CancellationRating
7.2
1,284 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £423Free CancellationRating
6.7
7,373 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £434Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £436Free CancellationRating
7.4
1,489 reviews
Search Scandinavian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom to Washington?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United Kingdom to Washington . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from United Kingdom to Washington with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington from United Kingdom which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from United Kingdom to Washington?

Once all potential United Kingdom to Washington 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.

I’m not ready to book a flight from United Kingdom to Washington right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of United Kingdom to Washington 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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