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Cheap flights from the United Kingdom to Washington, D.C. from £250

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Washington, D.C.
Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 March 2026.

Fri 8/514:15
EDI
-
IAD
1 stop10h 05m
Icelandair
Sun 24/520:30
IAD
-
EDI
1 stop11h 50m
Icelandair
Deal found 16/3£398
Tue 12/514:15
EDI
-
IAD
1 stop10h 05m
Icelandair
Sun 24/520:30
IAD
-
EDI
1 stop11h 50m
Icelandair
Deal found 16/3£399
Thu 28/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Wed 3/623:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 16/3£407
Fri 8/514:15
EDI
-
IAD
1 stop10h 05m
Icelandair
Mon 18/520:30
IAD
-
EDI
1 stop11h 50m
Icelandair
Deal found 16/3£409
Tue 12/514:15
EDI
-
IAD
1 stop10h 05m
Icelandair
Mon 18/520:30
IAD
-
EDI
1 stop11h 50m
Icelandair
Deal found 16/3£410
Wed 20/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 3/623:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 17/3£411
Wed 29/406:55
LHR
-
IAD
1 stop13h 05m
Lufthansa
Wed 6/518:25
IAD
-
LHR
Nonstop7h 30m
Lufthansa
Deal found 15/3£412
Wed 22/408:40
LHR
-
DCA
1 stop14h 06m
JetBlue
Sat 25/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Deal found 18/3£413
Fri 29/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 31/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 16/3£418
Mon 13/418:45
LHR
-
IAD
1 stop25h 25m
TAP AIR PORTUGAL
Sun 19/422:35
IAD
-
LHR
1 stop18h 25m
TAP AIR PORTUGAL
Deal found 14/3£419
Wed 20/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 27/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 17/3£420
Wed 8/715:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 22/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 15/3£421

Find flight deals from United Kingdom to Washington, D.C.

Keep the following information in mind while searching for United Kingdom to Washington, D.C. flight deals. Data was last updated 19 March 2026.

Round-trip from

£398

One-way from

£250

Popular in

July

Cheapest in

February

Average price

£521

Good round-trip deal

£461 or less

Good one-way deal

£420 or less
Icelandair
  • Icelandair
  • 8/5-24/5
  • 2 total stops
  • 21h 55m total
  • United Kingdom to Washington, D.C.
Search Deals
1/5
  • 1/5
  • 1 total stop
  • 35h 51m total
  • United Kingdom to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£55 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 March 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Washington, D.C. 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 19 March 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 14/4

09:30-16:05

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 19/4

22:10-10:40

Nonstop7h 30m

£450

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 29/4

06:15-19:20

2 stops18h 05m

Washington, D.C. Dulles Intl

Wed 6/5

20:30-21:15

2 stops19h 45m

£457

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 10/4

16:25-19:25

1 stop32h 00m

Washington, D.C. Dulles Intl

Mon 27/4

06:00-21:35

1 stop10h 35m

£458

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 23/4

11:30-22:29

2 stops15h 59m

Washington, D.C. Reagan-National

Mon 27/4

11:17-06:50

1 stop14h 33m

£462

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Mon 13/4

19:15-15:15

1 stop25h 00m

Washington, D.C. Dulles Intl

Mon 27/4

17:35-12:35

1 stop14h 00m

£464

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 13/5

09:50-15:45

1 stop10h 55m

Washington, D.C. Dulles Intl

Sun 17/5

22:25-10:50

Nonstop7h 25m

£464

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 15/4

16:40-19:55

Nonstop8h 15m

Washington, D.C. Dulles Intl

Wed 22/4

18:25-06:55

Nonstop7h 30m

£471

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 23/4

16:40-19:55

Nonstop8h 15m

Washington, D.C. Dulles Intl

Mon 27/4

18:25-06:55

Nonstop7h 30m

£471

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Mon 4/5

20:40-19:56

2 stops28h 16m

Washington, D.C. Reagan-National

Wed 13/5

15:10-10:40

1 stop14h 30m

£472

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 13/5

16:40-20:15

Nonstop8h 35m

Washington, D.C. Dulles Intl

Sun 17/5

18:25-06:55

Nonstop7h 30m

£473

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

Best time to book a flight from United Kingdom to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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, D.C.

What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of £337). Flying from United Kingdom to Washington, D.C. in July is currently the most expensive (average of £461). 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 WAS?

Find hourly flight availability from United Kingdom to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 March 2026.

When flying from United Kingdom to Washington, D.C., 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 Washington, D.C.

Explore weekly flight availability from United Kingdom to Washington, D.C.. 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 19 March 2026.

The most flights from GB0 to WAS are scheduled on a Tuesday (26 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).

How often are flights from the United Kingdom to Washington, D.C. delayed?

About 17% of weekly flights between United Kingdom and Washington, D.C. have experienced delays in the past year, with the average delay time being 129 minutes.

What is the most punctual flight time for the United Kingdom to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Washington, D.C. flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 10% of flights being delayed.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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, D.C.. Reviews last updated 19 March 2026.
Check out reviews from past customers who have flown with Virgin Atlantic,Aer Lingus, andIcelandair from the United Kingdom to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
682 reviews
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Aer Lingus
7.2
Good
1,477 reviews
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.1
Good
622 reviews
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,856 reviews
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,801 reviews
Virgin Atlantic
7.5
Good
682 reviews
Check prices

Entertainment

7.6

Food

6.9

Crew

8.2

Overall

7.5

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Washington, D.C.. 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 Washington, D.C.?

    For as low as £450, United Airlines can have you in Washington, D.C. from United Kingdom in 11h 35m. The distance between United Kingdom and Washington, D.C. is about 3664 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Washington, D.C. one-way?

    £350 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on JetBlue and Aer Lingus, with prices starting from £353 and £363, respectively.

  • What are the most popular routes from United Kingdom to Washington, D.C.?

    When deciding which route to take from United Kingdom to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.

  • What are the most reliable airlines from United Kingdom to Washington, D.C.?

    The top 3 most reliable airlines when flying from United Kingdom to Washington, D.C. are Air Canada (89%), Austrian Airlines (89%) and Copa Airlines (89%).

  • What are the cheapest flights from United Kingdom to Washington, D.C.?

    While on average a flight from United Kingdom to Washington, D.C. is generally £1,437, our data shows the cheapest flight currently is £415. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £314 for that flight.

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

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

  • How can I find direct flights from United Kingdom to Washington, D.C.?

    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, D.C..

  • Can I find deals for business class flights from United Kingdom to Washington, D.C.?

    Yes. Cheapflights offers flight deals from United Kingdom to Washington, D.C. 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 Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of £337). Flying from United Kingdom to Washington, D.C. in July is currently the most expensive (average of £461). 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
College Park

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.

Top 10 airlines flying from United Kingdom to Washington, D.C.

Discover the top 10 airlines that operate flights from United Kingdom to Washington, D.C.. 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 19 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£190Average£674FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
PLAYCheapest£305Average£447FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
United AirlinesCheapest£333Average£611FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
TAP AIR PORTUGALCheapest£334Average£488FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£336Average£567FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£366Average£707FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£368Average£645FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£379Average£662FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£385Average£667FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapest£401Average£595FlexibilityNo 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, D.C.?

Cheapflights helps you search for flights from United Kingdom to Washington, D.C. 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, D.C.?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to Washington, D.C. for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on United Kingdom to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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