Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Washington from £300

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
23 Jul — 30 Jul1
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 23 June 2026.

Sat 19/905:55
MAN
-
SEA
1 stop13h 52m
Virgin Atlantic
Wed 23/907:15
SEA
-
MAN
1 stop17h 00m
Virgin Atlantic
Deal found 23/6£362
Sat 17/1009:50
LHR
-
SEA
Nonstop9h 45m
Finnair
Sun 1/1118:50
SEA
-
LHR
Nonstop9h 30m
Finnair
Deal found 22/6£474
Thu 9/709:00
LHR
-
SEA
1 stop15h 59m
United Airlines
Sat 1/823:00
SEA
-
LHR
1 stop14h 20m
United Airlines
Deal found 23/6£475
Sun 20/906:30
LHR
-
SEA
1 stop13h 25m
Lufthansa
Sat 26/913:56
SEA
-
LHR
1 stop13h 59m
Lufthansa
Deal found 22/6£476
Sun 20/906:20
LHR
-
SEA
1 stop18h 50m
British Airways
Sun 27/920:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 22/6£478
Sat 4/717:45
LHR
-
SEA
Nonstop10h 18m
Virgin Atlantic
Mon 13/722:40
SEA
-
LHR
1 stop13h 30m
Virgin Atlantic
Deal found 19/6£478
Sun 4/1015:40
LGW
-
SEA
1 stop34h 15m
Icelandair
Fri 9/1015:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 23/6£479
Fri 28/809:50
LHR
-
SEA
Nonstop9h 45m
British Airways
Sat 5/920:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 23/6£479
Tue 27/1014:55
LHR
-
SEA
Nonstop10h 00m
British Airways
Sun 8/1118:50
SEA
-
LHR
Nonstop9h 30m
British Airways
Deal found 22/6£480
Mon 7/915:40
LGW
-
SEA
1 stop34h 15m
Icelandair
Wed 16/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 21/6£481
Thu 1/1006:50
LHR
-
SEA
2 stops19h 29m
United Airlines
Tue 13/1008:10
SEA
-
LHR
2 stops18h 15m
United Airlines
Deal found 20/6£481
Tue 27/1009:00
LHR
-
SEA
2 stops18h 54m
Multiple Airlines
Sun 8/1110:10
SEA
-
LHR
2 stops18h 50m
Multiple Airlines
Deal found 21/6£481

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 23 June 2026.

Round-trip from

£474

One-way from

£300

Popular in

July

Cheapest in

February

Average price

£632

Good round-trip deal

£551 or less

Good one-way deal

£593 or less
Finnair
  • Finnair
  • 17/10-1/11
  • Nonstop
  • 19h 15m total
  • United Kingdom to Washington
Search Deals
28/8
  • 28/8
  • 3 total stops
  • 39h 15m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£53 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 23 June 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

Thu 15/10

12:00-17:10

1 stop13h 10m

Seattle/Tacoma Intl

Mon 19/10

20:20-13:45

Nonstop9h 25m

£478

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 4/9

06:50-18:41

2 stops19h 51m

Seattle/Tacoma Intl

Sun 6/9

08:10-06:55

1 stop14h 45m

£481

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 3/7

09:30-23:44

1 stop22h 14m

Seattle/Tacoma Intl

Thu 23/7

15:40-12:25

1 stop12h 45m

£503

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 15/10

06:45-17:10

1 stop18h 25m

Seattle/Tacoma Intl

Mon 19/10

19:10-20:45

1 stop17h 35m

£512

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 1/11

10:00-00:18

2 stops22h 18m

Seattle/Tacoma Intl

Tue 1/12

13:40-15:45

1 stop18h 05m

£548

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 24/8

10:00-16:27

1 stop14h 27m

Seattle/Tacoma Intl

Tue 1/9

17:45-16:40

1 stop14h 55m

£556

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 10/8

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

Thu 20/8

05:30-07:10

1 stop17h 40m

£572

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 27/8

09:20-22:05

2 stops20h 45m

Seattle/Tacoma Intl

Mon 31/8

17:45-18:30

1 stop16h 45m

£577

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 25/9

11:25-23:26

2 stops20h 01m

Seattle/Tacoma Intl

Wed 10/3

08:30-09:10

2 stops16h 40m

£583

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 17/9

08:25-16:35

1 stop16h 10m

Seattle/Tacoma Intl

Sat 26/9

17:45-19:45

1 stop18h 00m

£589

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 £295). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £864). 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 23 June 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 23 June 2026.

The most flights from GB0 to USWA are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

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

Booking 56 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 23 June 2026.
Get a feel of what it's like to fly with KLM,Virgin Atlantic, andAer Lingus 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
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

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
1,530 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

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
690 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,622 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

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
685 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

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
8,067 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Food

7.3

Overall

7.8

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?

    British Airways, United Airlines, and Virgin Atlantic can get you from United Kingdom to State of Washington in just under 13h 10m. Your travel time can differ by up to 9h 08m. 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 £295). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £864). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Newark flights
Heathrow to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Stansted to John F Kennedy Intl flights
Gatwick to Newark flights
Heathrow to Orlando flights
London City to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Gatwick to LaGuardia flights
Heathrow to Miami flights
Luton to John F Kennedy Intl flights
Luton to Newark flights
Stansted to Newark flights
London City to Newark flights
Heathrow to Dulles Intl flights
Manchester to John F Kennedy Intl flights
Heathrow to Boston flights
Heathrow to San Francisco flights
Manchester to Orlando flights
Heathrow to Dallas/Fort Worth flights
Heathrow to O'Hare Intl flights
Heathrow to Baltimore flights
Gatwick to Orlando flights
Gatwick to Los Angeles flights
Heathrow to Las Vegas flights
Stansted to Los Angeles flights
London City to Los Angeles flights
Heathrow to Hobby flights
Heathrow to Atlanta flights
Stansted to Orlando flights
Gatwick to Miami flights
Manchester to Newark flights
Stansted to Miami flights
Edinburgh to Newark flights
London City to Miami flights
Manchester to LaGuardia flights
Heathrow to Seattle flights
Gatwick to Boston flights
Heathrow to Tampa flights
Heathrow to George Bush Intcntl flights
London City to Orlando flights
Heathrow to Ontario flights
London City to Boston flights
Birmingham to LaGuardia flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
Heathrow to Denver flights
Heathrow to Sky Harbor Intl flights
Luton to Los Angeles flights

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 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£339Average£569FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£347Average£559FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£368Average£629FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£423Average£733FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£435Average£730FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£443Average£769FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest£447Average£627FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest£457Average£720FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£466Average£687FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£473Average£628FlexibilityNo cancel feeOn-time69%
Search United Airlines 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.