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Cheap flights from the United Kingdom to Washington from £269

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 7/10. 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

Icelandair Logo
15:40 - 20:40LGW-SEA
13h 00m1 stop
Icelandair Logo
19:00 - 14:40SEA-LGW
11h 40m1 stop
£405Icelandair
Find Deal
Thu, 2 Oct - Thu, 9 Oct
Icelandair Logo
15:40 - 17:50LGW-SEA
34h 10m1 stop
Icelandair Logo
15:45 - 14:40SEA-LGW
14h 55m1 stop
£406Icelandair
Find Deal
Mon, 1 Sep - Tue, 30 Sep
Lufthansa Logo
18:15 - 12:10LCY-SEA
25h 55m1 stop
Lufthansa Logo
14:00 - 16:40SEA-LCY
18h 40m1 stop
£511Lufthansa
Find Deal
Thu, 13 Nov - Mon, 17 Nov
Lufthansa Logo
18:15 - 12:10LCY-SEA
25h 55m1 stop
Lufthansa Logo
14:00 - 17:40SEA-LCY
19h 40m1 stop
£512Lufthansa
Find Deal
Thu, 13 Nov - Mon, 17 Nov
Virgin Atlantic Logo
10:00 - 16:05LCY-SEA
14h 05m1 stop
Virgin Atlantic Logo
17:40 - 16:40SEA-LCY
15h 00m1 stop
£532Virgin Atlantic
Find Deal
Mon, 15 Sep - Mon, 29 Sep
Virgin Atlantic Logo
10:00 - 16:05LCY-SEA
14h 05m1 stop
Virgin Atlantic Logo
06:05 - 17:20SEA-LCY
27h 15m2 stops
£534Virgin Atlantic
Find Deal
Mon, 20 Oct - Mon, 10 Nov
British Airways Logo
15:40 - 17:35LHR-PDX
9h 55mdirect
British Airways Logo
14:06 - 12:45PDX-LHR
14h 39m1 stop
£544British Airways
Find Deal
Tue, 2 Sep - Tue, 9 Sep
British Airways Logo
15:40 - 17:35LHR-PDX
9h 55mdirect
British Airways Logo
19:25 - 13:00PDX-LHR
9h 35mdirect
£546British Airways
Find Deal
Tue, 2 Sep - Tue, 16 Sep
KLM Logo
19:00 - 11:20LCY-PDX
24h 20m1 stop
KLM Logo
12:40 - 13:15PDX-LCY
16h 35m2 stops
£631KLM
Find Deal
Tue, 26 Aug - Sat, 27 Sep
KLM Logo
10:00 - 11:20LCY-PDX
33h 20m1 stop
KLM Logo
13:15 - 17:20PDX-LCY
20h 05m1 stop
£743KLM
Find Deal
Tue, 26 Aug - Sat, 27 Sep

SWISS flights from United Kingdom to State of Washington

Our best SWISS deals on United Kingdom to State of Washington flight tickets
SWISS
12 Sept
LGW18:40London Gatwick
28h 10m
1 stop
SEA14:50Seattle/Tacoma Intl
24 Sept
SEA14:29Seattle/Tacoma Intl
19h 26m
2 stops
LGW17:55London Gatwick
£467
Find similar
SWISS
13 Sept
LCY09:20London City
13h 30m
1 stop
SEA14:50Seattle/Tacoma Intl
24 Sept
SEA14:29Seattle/Tacoma Intl
18h 46m
2 stops
LCY17:15London City
£488
Find similar
SWISS
16 Sept
LCY09:25London City
17h 11m
2 stops
SEA18:36Seattle/Tacoma Intl
30 Sept
SEA15:28Seattle/Tacoma Intl
18h 02m
2 stops
LCY17:30London City
£490
Find similar

Icelandair flights from United Kingdom to State of Washington

Our best Icelandair deals on United Kingdom to State of Washington flight tickets
Icelandair
2 Oct
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
9 Oct
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£405
Find similar
Icelandair
1 Sept
LGW15:40London Gatwick
34h 10m
1 stop
SEA17:50Seattle/Tacoma Intl
30 Sept
SEA15:45Seattle/Tacoma Intl
14h 55m
1 stop
LGW14:40London Gatwick
£406
Find similar
Icelandair
1 Sept
LHR21:25London Heathrow
22h 00m
1 stop
SEA11:25Seattle/Tacoma Intl
30 Sept
SEA19:00Seattle/Tacoma Intl
32h 55m
1 stop
LHR11:55London Heathrow
£409
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 5 August 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

LGW - SEA

LGWSEA

London Gatwick

Thu 2/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Thu 9/10

19:00-14:40

1 stop11h 40m

£405

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 1/9

15:40-17:50

1 stop34h 10m

Seattle/Tacoma Intl

Tue 30/9

15:45-14:40

1 stop14h 55m

£406

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 13/11

18:15-12:10

1 stop25h 55m

Seattle/Tacoma Intl

Mon 17/11

14:00-16:40

1 stop18h 40m

£511

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 13/11

18:15-12:10

1 stop25h 55m

Seattle/Tacoma Intl

Mon 17/11

14:00-17:40

1 stop19h 40m

£512

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 15/9

10:00-16:05

1 stop14h 05m

Seattle/Tacoma Intl

Mon 29/9

17:40-16:40

1 stop15h 00m

£532

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/10

10:00-16:05

1 stop14h 05m

Seattle/Tacoma Intl

Mon 10/11

06:05-17:20

2 stops27h 15m

£534

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 2/9

15:40-17:35

Nonstop9h 55m

Portland

Tue 9/9

14:06-12:45

1 stop14h 39m

£544

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 2/9

15:40-17:35

Nonstop9h 55m

Portland

Tue 16/9

19:25-13:00

Nonstop9h 35m

£546

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 26/8

19:00-11:20

1 stop24h 20m

Portland

Sat 27/9

12:40-13:15

2 stops16h 35m

£631

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 26/8

10:00-11:20

1 stop33h 20m

Portland

Sat 27/9

13:15-17:20

1 stop20h 05m

£743

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 March is also cheap. Prices for this month can be found on momondo for an average of £496.

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 £601. 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 £711.

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 £525 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 £636.

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 £585 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 £530 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.

  • 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
Aer LingusPriceFrom £8Free CancellationRating
7.1
1,197 reviews
Search Aer Lingus flights
IcelandairPriceFrom £329Free CancellationRating
7.0
524 reviews
Search Icelandair flights
Air FrancePriceFrom £389Free CancellationRating
7.5
1,466 reviews
Search Air France flights
LufthansaPriceFrom £399Free CancellationRating
6.8
7,287 reviews
Search Lufthansa flights
FinnairPriceFrom £408Free CancellationRating
7.6
1,319 reviews
Search Finnair flights
KLMPriceFrom £408Free CancellationRating
7.8
1,381 reviews
Search KLM flights
United AirlinesPriceFrom £410Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
British AirwaysPriceFrom £429Free CancellationRating
6.6
7,237 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £447Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
DeltaPriceFrom £449Free CancellationRating
8.0
7,985 reviews
Search Delta 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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