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Cheap flights from the United Kingdom to Washington from £284

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
20 Feb — 27 Feb1
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 21 January 2026.

Mon 2/213:25
LHR
-
SEA
2 stops28h 06m
Air Canada
Mon 16/205:45
SEA
-
LHR
2 stops17h 25m
Air Canada
Deal found 20/1£375
Tue 17/220:15
LHR
-
SEA
1 stop25h 05m
Lufthansa
Tue 24/209:55
SEA
-
LHR
2 stops16h 15m
Lufthansa
Deal found 20/1£377
Sun 8/319:30
LHR
-
SEA
1 stop24h 40m
Multiple Airlines
Sat 21/308:00
SEA
-
LHR
1 stop15h 40m
Multiple Airlines
Deal found 20/1£378
Fri 24/413:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Sun 3/519:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 20/1£378
Thu 30/409:25
LGW
-
SEA
2 stops22h 04m
SWISS
Tue 12/509:55
SEA
-
LGW
2 stops23h 55m
SWISS
Deal found 20/1£379
Fri 27/206:35
LHR
-
SEA
1 stop14h 45m
United Airlines
Sat 14/309:20
SEA
-
LHR
1 stop15h 05m
United Airlines
Deal found 20/1£379
Tue 14/415:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Thu 4/619:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 20/1£380
Wed 11/206:00
LHR
-
SEA
2 stops23h 12m
SWISS
Wed 18/207:00
SEA
-
LHR
1 stop16h 55m
SWISS
Deal found 20/1£380
Tue 3/311:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Mon 16/315:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 20/1£381
Fri 24/407:25
LHR
-
SEA
1 stop17h 34m
United Airlines
Mon 11/515:40
SEA
-
LHR
1 stop12h 40m
United Airlines
Deal found 20/1£381
Sat 2/506:00
LHR
-
SEA
2 stops21h 00m
SWISS
Mon 11/509:55
SEA
-
LHR
2 stops27h 50m
SWISS
Deal found 20/1£381
Tue 28/406:30
LHR
-
SEA
1 stop13h 50m
Lufthansa
Sun 3/508:00
SEA
-
LHR
1 stop14h 55m
Lufthansa
Deal found 20/1£382

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 21 January 2026.

Round-trip from

£375

One-way from

£284

Popular in

July

Cheapest in

February

Average price

£479

Good round-trip deal

£457 or less

Good one-way deal

£459 or less
Air Canada
  • Air Canada
  • 2/2-16/2
  • 4 total stops
  • 45h 31m total
  • United Kingdom to Washington
Search Deals
5/5
  • 5/5
  • 3 total stops
  • 30h 28m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 21 January 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

United Kingdom

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 1/5

09:25-23:29

2 stops22h 04m

Seattle/Tacoma Intl

Tue 12/5

09:55-17:50

2 stops23h 55m

£379

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 30/4

09:25-23:29

2 stops22h 04m

Seattle/Tacoma Intl

Tue 12/5

09:55-17:50

2 stops23h 55m

£379

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 29/4

07:25-16:59

1 stop17h 34m

Seattle/Tacoma Intl

Mon 4/5

11:39-11:10

1 stop15h 31m

£381

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/3

06:30-13:10

1 stop13h 40m

Seattle/Tacoma Intl

Tue 17/3

08:59-08:25

2 stops16h 26m

£381

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 2/5

06:30-12:20

1 stop13h 50m

Seattle/Tacoma Intl

Sun 10/5

08:00-06:55

1 stop14h 55m

£382

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 30/4

06:30-12:20

1 stop13h 50m

Seattle/Tacoma Intl

Tue 12/5

07:00-06:45

1 stop15h 45m

£382

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/3

06:30-12:35

1 stop13h 05m

Seattle/Tacoma Intl

Tue 17/3

19:25-11:55

Nonstop9h 30m

£384

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 24/2

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Tue 3/3

16:45-10:30

Nonstop9h 45m

£384

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 2/2

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Mon 16/2

18:25-11:55

Nonstop9h 30m

£384

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 17/2

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Tue 24/2

18:25-11:55

Nonstop9h 30m

£384

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £303). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £459). 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 21 January 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 21 January 2026.

The most flights from GB0 to USWA are scheduled on a Tuesday (21 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).

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 21 January 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
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,442 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,524 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Icelandair
7.1
Good
602 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,690 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Comfort

7.6

Boarding

7.8

Overall

7.7

Food

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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?

    SWISS, United Airlines, and Lufthansa can get you from United Kingdom to State of Washington in just under 13h 50m. Your travel time can differ by up to 8h 14m. 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, March is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £303). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £459). 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

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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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£335Average£571FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£346Average£539FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£362Average£575FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£417Average£767FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapest£420Average£497FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air FranceCheapest£420Average£723FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£429Average£629FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£429Average£645FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£430Average£645FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£436Average£595FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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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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