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Cheap flights from the United Kingdom to Washington from £302

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
21 Jun — 28 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Washington

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Washington
Explore the most affordable flight options available from United Kingdom to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 May 2026.

Tue 23/609:25
MAN
-
SEA
1 stop15h 45m
Multiple Airlines
Tue 30/619:10
SEA
-
MAN
1 stop14h 15m
Multiple Airlines
Deal found 20/5£515
Fri 19/606:15
MAN
-
SEA
1 stop18h 55m
Multiple Airlines
Fri 26/619:10
SEA
-
MAN
1 stop13h 35m
Multiple Airlines
Deal found 19/5£518
Thu 12/1106:20
LHR
-
SEA
1 stop13h 05m
Virgin Atlantic
Mon 23/1116:48
SEA
-
LHR
Nonstop9h 42m
Virgin Atlantic
Deal found 18/5£529
Thu 4/611:05
LGW
-
SEA
1 stop14h 05m
Multiple Airlines
Sun 7/619:10
SEA
-
LGW
1 stop17h 45m
Multiple Airlines
Deal found 19/5£530
Tue 22/913:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Tue 13/1019:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 17/5£530
Thu 25/609:45
LGW
-
SEA
1 stop15h 25m
Multiple Airlines
Mon 29/619:10
SEA
-
LGW
1 stop13h 45m
Multiple Airlines
Deal found 20/5£532
Sat 26/921:25
LHR
-
SEA
1 stop31h 15m
Icelandair
Thu 22/1019:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 18/5£532
Sun 21/613:00
LGW
-
SEA
1 stop30h 45m
Icelandair
Sun 5/715:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 20/5£533
Wed 2/909:00
LHR
-
SEA
1 stop15h 59m
Multiple Airlines
Tue 8/908:10
SEA
-
LHR
1 stop14h 45m
Multiple Airlines
Deal found 19/5£533
Thu 12/1106:20
LHR
-
SEA
1 stop13h 05m
Multiple Airlines
Mon 23/1113:30
SEA
-
LHR
1 stop12h 30m
Multiple Airlines
Deal found 18/5£534
Mon 8/608:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Sun 21/619:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 19/5£534
Tue 2/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Sat 6/619:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 17/5£535

Find flight deals from United Kingdom to Washington

Keep the following information in mind while searching for United Kingdom to Washington flight deals. Data was last updated 22 May 2026.

Round-trip from

£515

One-way from

£302

Popular in

July

Cheapest in

February

Average price

£555

Good round-trip deal

£563 or less

Good one-way deal

£551 or less
23/6-30/6
  • 23/6-30/6
  • 2 total stops
  • 30h 00m total
  • United Kingdom to Washington
Search Deals
13/9
  • 13/9
  • 2 total stops
  • 44h 20m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington.
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to 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, Cheapflights users made 858,174 searches. Data last updated 22 May 2026.
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

Cheapest return flight

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 6/11

06:30-11:47

1 stop13h 17m

Seattle/Tacoma Intl

Mon 16/11

08:25-07:05

1 stop14h 40m

£581

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 21/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

Mon 7/12

07:20-06:50

1 stop15h 30m

£604

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 18/8

06:15-11:15

1 stop13h 00m

Seattle/Tacoma Intl

Tue 25/8

18:20-12:10

Nonstop9h 50m

£653

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 28/8

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Fri 11/9

10:17-09:05

1 stop14h 48m

£654

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 12/8

11:45-16:27

1 stop12h 42m

Seattle/Tacoma Intl

Thu 20/8

21:45-15:35

Nonstop9h 50m

£658

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 3/9

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Sat 12/9

06:24-10:50

1 stop20h 26m

£658

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 20/6

07:15-18:45

2 stops19h 30m

Seattle/Tacoma Intl

Sun 13/9

15:40-20:30

3 stops20h 50m

£659

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 4/6

09:25-17:10

1 stop15h 45m

Seattle/Tacoma Intl

Sun 7/6

19:10-15:25

1 stop12h 15m

£660

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 15/6

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 29/6

10:27-08:05

1 stop13h 38m

£662

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 9/10

09:25-23:26

2 stops22h 01m

Seattle/Tacoma Intl

Wed 14/10

07:00-08:25

2 stops17h 25m

£666

Flights are sorted by cheapest return flights first.

Deals found on 22/5

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

Best time to book a flight from United Kingdom to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Washington

What is the cheapest month to book a flight from United Kingdom to State of Washington?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £290). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £873). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to WA?

Find hourly flight availability from United Kingdom to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 May 2026.

When flying from United Kingdom to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to State of Washington

Explore weekly flight availability from United Kingdom to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 22 May 2026.

The most flights from GB0 to USWA are scheduled on a Wednesday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).

How far ahead should I book a flight from United Kingdom to State of Washington?

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated 22 May 2026.
Get a feel of what it's like to fly with KLM,Virgin Atlantic, andAir France from the United Kingdom to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,519 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.5
Good
689 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Air France
7.4
Good
1,590 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
657 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
7,992 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to State of Washington?

    KLM, Delta, and British Airways can get you from United Kingdom to State of Washington in just under 9h 45m. Your travel time can differ by up to 3h 32m. There are 4783 mi between United Kingdom and State of Washington. This flight may include one or multiple stops.

  • Can I find deals for flights from United Kingdom to Washington that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Washington.

  • Can I find deals for business class flights from United Kingdom to Washington?

    Yes. Cheapflights offers flight deals from United Kingdom to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to State of Washington?

    Currently, February is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £290). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £873). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for United Kingdom to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from United Kingdom to Washington

Discover the top 10 airlines that operate flights from United Kingdom to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 May 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£334Average£592FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£341Average£541FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£362Average£595FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£373Average£723FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£417Average£744FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£427Average£672FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£441Average£677FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air FranceCheapest£450Average£757FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£461Average£671FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£463Average£498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Washington?

Cheapflights helps you search for flights from United Kingdom to Washington via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Washington?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Washington.

Can Cheapflights find flights from United Kingdom to Washington with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from United Kingdom to Washington flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from United Kingdom to Washington become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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