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Cheap flights from London to District of Columbia from £399

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 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — IAD
25 Jun — 2 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to District of Columbia

Enter your travel dates to find the best prices.

Cheapest flights from London to District of Columbia
Explore the most affordable flight options available from London to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 May 2026.

Fri 9/1013:05
LHR
-
IAD
1 stop11h 15m
Icelandair
Sat 17/1020:30
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 25/5£472
Fri 5/614:00
LGW
-
IAD
1 stop33h 32m
Multiple Airlines
Mon 3/812:00
IAD
-
LGW
2 stops17h 00m
Multiple Airlines
Deal found 23/5£472
Thu 15/1021:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Sun 18/1023:20
IAD
-
LHR
1 stop16h 00m
Icelandair
Deal found 24/5£473
Wed 7/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 23/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 21/5£473
Wed 7/1013:05
LHR
-
IAD
1 stop14h 10m
Icelandair
Fri 16/1020:30
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 25/5£474
Wed 7/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 16/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 25/5£474
Tue 6/1013:05
LHR
-
IAD
1 stop11h 15m
Icelandair
Wed 21/1023:15
IAD
-
LHR
1 stop16h 05m
Icelandair
Deal found 25/5£474
Thu 8/1015:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Tue 13/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 23/5£474
Mon 31/821:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Mon 7/920:30
IAD
-
LHR
1 stop18h 50m
Icelandair
Deal found 23/5£475
Mon 5/1021:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Sat 17/1020:30
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 25/5£476
Thu 17/910:35
LGW
-
IAD
1 stop15h 00m
TAP AIR PORTUGAL
Mon 28/922:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 25/5£476
Wed 26/821:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Fri 11/920:30
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 25/5£476

Find flight deals from London to District of Columbia

Keep the following information in mind while searching for London to District of Columbia flight deals. Data was last updated 26 May 2026.

Round-trip from

£472

One-way from

£399

Popular in

July

Cheapest in

February

Average price

£556

Good round-trip deal

£550 or less

Good one-way deal

£617 or less
Icelandair
  • Icelandair
  • 9/10-16/10
  • 2 total stops
  • 21h 40m total
  • London to District of Columbia
Search Deals
19/6
  • 19/6
  • 2 total stops
  • 17h 31m total
  • London to District of Columbia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 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 London (LON) to District of Columbia.
Search Deals
Price to beat on a one-way flight from London (LON) to District of Columbia.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to District of Columbia 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 26 May 2026.
Use the filters below to find and compare flights from London to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/10

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 13/10

20:30-14:40

1 stop13h 10m

£474

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 29/10

13:00-21:00

1 stop12h 00m

Washington, D.C. Reagan-National

Thu 5/11

07:00-21:20

1 stop9h 20m

£536

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Fri 21/8

12:20-21:50

1 stop14h 30m

Washington, D.C. Reagan-National

Thu 3/9

13:25-09:35

1 stop15h 10m

£548

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Sat 18/7

09:00-15:45

1 stop11h 45m

Washington, D.C. Dulles Intl

Sat 25/7

17:15-08:20

1 stop10h 05m

£553

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 18/6

08:40-17:46

1 stop14h 06m

Washington, D.C. Reagan-National

Wed 4/11

06:25-20:45

1 stop9h 20m

£558

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Mon 22/6

08:15-15:45

1 stop12h 30m

Washington, D.C. Dulles Intl

Fri 26/6

21:00-17:25

1 stop15h 25m

£569
Fastest return journey

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 26/8

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Fri 18/9

18:35-06:55

Nonstop7h 20m

£575

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 24/6

08:40-17:46

1 stop14h 06m

Washington, D.C. Reagan-National

Tue 30/6

14:20-06:30

1 stop11h 10m

£575

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 25/9

19:30-14:00

1 stop23h 30m

Washington, D.C. Dulles Intl

Sat 24/10

19:20-07:40

Nonstop7h 20m

£577

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 27/8

08:40-17:56

1 stop14h 16m

Washington, D.C. Reagan-National

Tue 22/9

06:30-20:45

1 stop9h 15m

£579

Flights are sorted by cheapest return flights first.

Deals found on 24/5

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from London to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from London 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 London to District of Columbia

What is the cheapest month to book a flight from London to District of Columbia?

Currently, March is the cheapest month in which you can book a flight from London to District of Columbia (average of £475). Flying from London to District of Columbia in July is currently the most expensive (average of £654). 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 LON to DC?

Find hourly flight availability from London to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 May 2026.

When flying from London to District of Columbia, 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 London to District of Columbia

Explore weekly flight availability from London to District of Columbia. 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 26 May 2026.

The most flights from LON to USDC are scheduled on a Monday (28 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (28 on average).

How much does it cost for a return flight from London to District of Columbia?

How far ahead should I book a flight from London to District of Columbia?

To ensure you get the cheapest price possible for a flight from London to District of Columbia, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated 26 May 2026.
See what other customers who have flown with Virgin Atlantic,United Airlines, andIcelandair from London to District of Columbia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
9,753 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Icelandair
7.0
Good
662 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,033 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,006 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

Find useful and relevant information for your journey from London to District of Columbia. 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 London to District of Columbia?

    A quick flight from London to District of Columbia can take about 12h. Icelandair provides one of the quickest options available for as low as £536. London and District of Columbia are separated by a distance of 3652 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from London to District of Columbia one-way?

    One-way options have recently been found by users for as low as £323 on JetBlue. Other airlines that offer cheap prices include Aer Lingus from £351 and TAP AIR PORTUGAL from £367 one-way.

  • What are the most popular routes from London to District of Columbia?

    While some choose either London Gatwick - Washington, D.C. Dulles Intl or London Heathrow - Washington, D.C. Reagan-National, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to District of Columbia.

  • What are the most reliable airlines from London to District of Columbia?

    Before booking your flight to District of Columbia from London, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), Copa Airlines( 88%).

  • What are the cheapest flights from London to District of Columbia?

    On average you can expect to pay £957 for a flight from London to District of Columbia. The cheapest flight overall is £484 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at £397.

  • Can I find deals for flights from London to District of Columbia that include hotel bookings?

    Yes. In addition to deals on London to District of Columbia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to District of Columbia.

  • Can I find deals for business class flights from London to District of Columbia?

    Yes. Cheapflights offers flight deals from London to District of Columbia 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 London to District of Columbia?

    Currently, March is the cheapest month in which you can book a flight from London to District of Columbia (average of £475). Flying from London to District of Columbia in July is currently the most expensive (average of £654). 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 London to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from London to District of Columbia

Discover the top 10 airlines that operate flights from London to District of Columbia. 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 26 May 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£293Average£572FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£326Average£502FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£330Average£403FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£362Average£698FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£375Average£553FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£397Average£570FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£401Average£592FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£404Average£552FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£405Average£533FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£408Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways 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 London to District of Columbia?

Cheapflights helps you search for flights from London to District of Columbia 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 London to District of Columbia?

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 London to District of Columbia.

Can Cheapflights find flights from London to District of Columbia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to District of Columbia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to District of Columbia become cheaper?

Yes, Cheapflights offers price alerts on London to District of Columbia 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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