Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Washington from £271

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 November 2025.

Round-trip from

£452

One-way from

£271

Popular in

July

Cheapest in

January

Average price

£544

Good round-trip deal

£559 or less

Good one-way deal

£489 or less
Icelandair
  • Icelandair
  • 9/3-16/3
  • 2 total stops
  • 25h 15m total
  • United Kingdom to Washington
Search Deals
17/1
  • 17/1
  • 2 total stops
  • 29h 51m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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

Find 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 14 November 2025.

Wed 19/1111:55LGW - SEA
1 stop13h 05mIcelandair
Wed 31/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 13/11£474
Wed 24/1211:55LGW - SEA
1 stop13h 05mIcelandair
Tue 6/114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 13/11£476
Sat 6/1211:55LGW - SEA
1 stop13h 05mIcelandair
Tue 6/114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 12/11£477
Thu 4/1220:35LHR - SEA
1 stop28h 25mIcelandair
Tue 6/114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 12/11£480
Sat 6/1212:15LHR - SEA
1 stop12h 45mIcelandair
Tue 6/114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 12/11£480
Tue 16/1220:35LHR - SEA
1 stop28h 25mIcelandair
Thu 15/114:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 13/11£482
Tue 16/1220:35LHR - SEA
1 stop28h 25mIcelandair
Mon 5/114:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 13/11£486
Tue 2/1220:35LHR - SEA
1 stop28h 25mIcelandair
Sat 6/1214:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 13/11£489
Mon 8/1208:30STN - SEA
1 stop17h 50mMultiple Airlines
Sun 14/1220:05SEA - STN
1 stop12h 30mMultiple Airlines
Deal found 12/11£490
Sun 23/1120:35LHR - SEA
1 stop28h 25mIcelandair
Sun 30/1114:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 12/11£490
Mon 8/1209:40LGW - SEA
1 stop16h 40mMultiple Airlines
Sun 14/1220:05SEA - LGW
1 stop13h 05mMultiple Airlines
Deal found 12/11£494
Tue 18/1120:35LHR - SEA
1 stop28h 25mIcelandair
Wed 31/1214:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 12/11£496

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 14 November 2025.
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

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Mon 9/3

11:55-18:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 17/3

15:35-10:45

1 stop12h 10m

£478

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Wed 11/3

11:55-18:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 17/3

15:35-10:45

1 stop12h 10m

£478

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 16/12

20:35-17:00

1 stop28h 25m

Seattle/Tacoma Intl

Thu 15/1

14:35-10:50

1 stop12h 15m

£482

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 16/12

20:35-17:00

1 stop28h 25m

Seattle/Tacoma Intl

Wed 14/1

14:35-19:30

1 stop20h 55m

£483

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 13/2

14:55-16:55

Nonstop10h 00m

Seattle/Tacoma Intl

Thu 19/2

13:39-11:35

1 stop13h 56m

£495

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 21/1

12:20-14:53

Nonstop10h 33m

Seattle/Tacoma Intl

Sat 24/1

22:59-06:25

1 stop23h 26m

£499

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Sun 8/3

11:55-18:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 17/3

15:35-10:45

1 stop12h 10m

£502

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 27/11

12:15-17:00

1 stop12h 45m

Seattle/Tacoma Intl

Mon 1/12

14:35-10:50

1 stop12h 15m

£504

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 13/1

13:00-10:26

1 stop29h 26m

Seattle/Tacoma Intl

Thu 29/1

23:10-10:00

1 stop26h 50m

£511

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 2/2

08:40-20:46

2 stops20h 06m

Seattle/Tacoma Intl

Tue 10/2

07:10-08:10

2 stops17h 00m

£518

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 60 results
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, March is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £310). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £473). 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 14 November 2025.

When flying from United Kingdom to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 11% versus a flight at midday.

What is the cheapest day to fly from United Kingdom to State of Washington?

Use this chart to determine the cheapest time to fly return from United Kingdom to Washington. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to State of Washington flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 14 November 2025.

The most flights from GB0 to USWA are scheduled on a Thursday (15 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 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 14 November 2025.
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
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,411 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
673 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Air France
7.4
Good
1,487 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.1
Good
578 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,521 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.7

Comfort

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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?

    Icelandair, British Airways, and Delta can get you from United Kingdom to State of Washington in just under 10h. Your travel time can differ by up to 3h 05m. There are 4783 mi between United Kingdom and State of Washington. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to State of Washington one-way?

    £397 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Virgin Atlantic and Lufthansa, with prices starting from £405 and £410, respectively.

  • 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 £310). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £473). 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 John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
London City to John F Kennedy Intl flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
London City to Newark flights
Gatwick to LaGuardia flights
Gatwick to John F Kennedy Intl flights
Heathrow to Miami flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
Luton to Newark flights
Heathrow to Los Angeles flights
Heathrow to Orlando flights
Manchester to John F Kennedy Intl flights
Heathrow to Boston flights
Heathrow to Las Vegas flights
Heathrow to Dallas/Fort Worth flights
Heathrow to San Francisco flights
Heathrow to Dulles Intl flights
Gatwick to Miami flights
Manchester to Orlando flights
London City to Miami flights
London City to LaGuardia flights
Heathrow to O'Hare Intl flights
Heathrow to Tampa flights
Gatwick to Orlando flights
Gatwick to Los Angeles flights
Heathrow to Atlanta flights
Manchester to Newark flights
London City to Los Angeles flights
Heathrow to Baltimore flights
Manchester to LaGuardia flights
Stansted to Miami flights
London City to Orlando flights
Heathrow to Hobby flights
Heathrow to Seattle flights
Heathrow to Philadelphia flights
Gatwick to Boston flights
Edinburgh to Newark flights
Luton to Miami flights
Gatwick to Las Vegas flights
Heathrow to Ontario flights
London City to Boston flights
Heathrow to George Bush Intcntl flights
Heathrow to Santa Ana flights
Gatwick to Dallas/Fort Worth flights
Stansted to Los Angeles flights
Gatwick to San Francisco 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£350Average£621FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£393Average£734FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£406Average£604FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£407Average£601FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£411Average£651FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£414Average£664FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£431Average£660FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£450Average£651FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£451Average£675FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest£454Average£715FlexibilityNo cancel feeOn-timeN/A
Search Delta 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.