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Cheap flights from District of Columbia to London Heathrow Airport from £278

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
10 Jan — 17 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from District of Columbia to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from District of Columbia to Heathrow
Explore the most affordable flight options available from District of Columbia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 December 2025.

Mon 29/1222:33IAD - LHR
1 stop26h 22mUnited Airlines
Fri 16/112:00LHR - IAD
1 stop33h 13mUnited Airlines
Deal found 8/12£432
Mon 15/1219:40IAD - LHR
1 stop18h 50mIcelandair
Fri 23/112:15LHR - IAD
1 stop11h 15mIcelandair
Deal found 8/12£435
Wed 31/1218:00IAD - LHR
1 stop19h 45mLufthansa
Wed 14/107:40LHR - IAD
1 stop12h 55mLufthansa
Deal found 9/12£446
Mon 29/1219:40IAD - LHR
1 stop18h 50mIcelandair
Mon 12/120:35LHR - IAD
1 stop26h 55mIcelandair
Deal found 8/12£449
Tue 30/1222:08IAD - LHR
1 stop30h 12mUnited Airlines
Tue 13/109:00LHR - IAD
1 stop12h 40mUnited Airlines
Deal found 9/12£454
Tue 30/1209:45IAD - LHR
1 stop16h 25mUnited Airlines
Thu 22/106:50LHR - IAD
1 stop12h 45mUnited Airlines
Deal found 8/12£456
Wed 31/1211:05DCA - LHR
1 stop15h 05mAir Canada
Wed 14/106:50LHR - DCA
2 stops13h 41mAir Canada
Deal found 10/12£458
Wed 31/1209:45IAD - LHR
1 stop16h 25mMultiple Airlines
Wed 14/106:50LHR - IAD
2 stops14h 34mMultiple Airlines
Deal found 10/12£458
Wed 31/1221:45IAD - LHR
Nonstop7h 15mBritish Airways
Wed 14/112:10LHR - IAD
Nonstop8h 25mBritish Airways
Deal found 10/12£459
Wed 31/1218:20IAD - LHR
Nonstop7h 20mUnited Airlines
Wed 14/107:30LHR - IAD
1 stop12h 05mUnited Airlines
Deal found 9/12£462
Tue 9/1206:00DCA - LHR
1 stop10h 40mJetBlue
Thu 18/1209:20LHR - DCA
1 stop13h 38mJetBlue
Deal found 8/12£479
Tue 30/1216:10DCA - LHR
1 stop10h 00mUnited Airlines
Fri 23/115:10LHR - DCA
1 stop11h 42mUnited Airlines
Deal found 8/12£482

Find flight deals from District of Columbia to Heathrow

Keep the following information in mind while searching for District of Columbia to Heathrow flight deals. Data was last updated 11 December 2025.

Round-trip from

£428

One-way from

£278

Popular in

December

Cheapest in

September

Average price

£733

Good round-trip deal

£505 or less

Good one-way deal

£337 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 2/3-9/3
  • 4 total stops
  • 30h 05m total
  • District of Columbia to London
Search Deals
Air Canada
  • Air Canada
  • 25/1
  • 1 total stop
  • 15h 25m total
  • District of Columbia to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£29 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from District of Columbia to London Heathrow.
Search Deals
Price to beat on a one-way flight from District of Columbia to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from District of Columbia to Heathrow 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 11 December 2025.
Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

District of Columbia

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 13/1

12:23-09:20

2 stops15h 57m

London Heathrow

Tue 20/1

19:50-17:15

2 stops26h 25m

£458

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 8/1

18:20-06:40

Nonstop7h 20m

London Heathrow

Wed 14/1

06:50-14:35

1 stop12h 45m

£459

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 25/2

22:15-10:50

Nonstop7h 35m

London Heathrow

Wed 11/3

06:50-15:35

1 stop12h 45m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 10/3

19:20-06:40

Nonstop7h 20m

London Heathrow

Tue 17/3

06:50-15:35

1 stop12h 45m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 12/2

22:15-10:50

Nonstop7h 35m

London Heathrow

Tue 17/2

06:50-14:35

1 stop12h 45m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 24/1

18:05-06:40

Nonstop7h 35m

London Heathrow

Sat 31/1

06:35-15:35

1 stop14h 00m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 3/2

22:15-10:50

Nonstop7h 35m

London Heathrow

Sun 8/2

06:50-14:35

1 stop12h 45m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 23/1

18:05-06:40

Nonstop7h 35m

London Heathrow

Sat 31/1

06:35-15:35

1 stop14h 00m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 13/2

22:15-10:50

Nonstop7h 35m

London Heathrow

Thu 19/2

06:50-14:35

1 stop12h 45m

£460

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 13/1

22:15-10:50

Nonstop7h 35m

London Heathrow

Tue 20/1

06:50-14:35

1 stop12h 45m

£460

Flights are sorted by cheapest return flights first.

Deals found on 9/12

Showing 1-10 of 46 results
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Best time to book a flight from District of Columbia to Heathrow

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

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

Currently, March is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of £23). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of £544). 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 DC to LHR?

Find hourly flight availability from District of Columbia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 December 2025.

When flying from District of Columbia to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 27% versus a flight at midday.

Weekly flight availability from District of Columbia to London Heathrow Airport

Explore weekly flight availability from District of Columbia to Heathrow. 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 11 December 2025.

The most flights from USDC to LHR are scheduled on a Monday (26 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (22 on average).

Related info for your journey

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

    A quick flight from District of Columbia to London Heathrow Airport can take about 7h 20m. Scandinavian Airlines provides one of the quickest options available for as low as £459. The distance between District of Columbia and London Heathrow Airport is about 3664 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as £148. Users have also found prices from £160 and £185 on TAP AIR PORTUGAL and JetBlue, respectively.

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

    Before booking your flight to London Heathrow Airport from District of Columbia, check out the most reliable airlines to get you to your destination on time: Air France (90%), Delta (90%), Virgin Atlantic( 90%).

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

    The cheapest flight price from District of Columbia to London Heathrow Airport is £288. On average you can expect to pay £565. The most popular route, (Washington, D.C. Dulles Intl - London Heathrow), can usually be booked for £317.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of £23). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of £544). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Northampton
Hounslow
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Watford
Hayes
Crawley
Winchester
Swindon
Deal
Bedford
Romford
Chichester

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Alternative routes for District of Columbia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from District of Columbia to Heathrow

Discover the top 8 airlines that operate flights from District of Columbia to Heathrow. 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 11 December 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£311Average£496FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£371Average£542FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£384Average£614FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£388Average£582FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£400Average£510FlexibilityNo cancel feeOn-time77%
Search Air France flights
IberiaCheapest£461Average£521FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest£505Average£630FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£514Average£724FlexibilityNo cancel feeOn-time71%
Search American 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 District of Columbia to Heathrow?

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from District of Columbia to Heathrow for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from District of Columbia to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from District of Columbia to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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