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Cheap flights from District of Columbia to London Heathrow Airport from £270

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
1 May — 8 May1
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 1 April 2026.

Mon 20/422:35
IAD
-
LHR
1 stop18h 25m
TAP AIR PORTUGAL
Tue 5/519:50
LHR
-
IAD
1 stop24h 20m
TAP AIR PORTUGAL
Deal found 29/3£486
Mon 20/420:20
IAD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Thu 30/406:40
LHR
-
IAD
1 stop15h 20m
Scandinavian Airlines
Deal found 29/3£486
Sun 19/420:20
IAD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Thu 23/410:20
LHR
-
IAD
1 stop11h 40m
Scandinavian Airlines
Deal found 30/3£487
Sun 26/420:20
IAD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Wed 29/410:20
LHR
-
IAD
1 stop11h 40m
Scandinavian Airlines
Deal found 28/3£489
Thu 14/516:05
IAD
-
LHR
1 stop12h 30m
Air Canada
Sun 31/509:30
LHR
-
IAD
1 stop14h 28m
Air Canada
Deal found 1/4£490
Tue 19/515:45
IAD
-
LHR
1 stop13h 15m
Air Canada
Wed 3/609:30
LHR
-
IAD
1 stop14h 28m
Air Canada
Deal found 1/4£491
Mon 18/515:45
IAD
-
LHR
1 stop13h 15m
Air Canada
Tue 2/609:30
LHR
-
IAD
1 stop14h 28m
Air Canada
Deal found 1/4£492
Sun 26/422:35
IAD
-
LHR
1 stop18h 25m
TAP AIR PORTUGAL
Tue 5/519:50
LHR
-
IAD
1 stop24h 20m
TAP AIR PORTUGAL
Deal found 29/3£493
Mon 4/520:20
IAD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Thu 14/506:40
LHR
-
IAD
1 stop15h 20m
Scandinavian Airlines
Deal found 27/3£495
Mon 27/422:35
IAD
-
LHR
1 stop15h 15m
TAP AIR PORTUGAL
Thu 7/506:00
LHR
-
IAD
1 stop19h 35m
TAP AIR PORTUGAL
Deal found 31/3£496
Tue 5/522:35
IAD
-
LHR
1 stop19h 20m
TAP AIR PORTUGAL
Wed 13/519:50
LHR
-
IAD
1 stop24h 20m
TAP AIR PORTUGAL
Deal found 30/3£496
Mon 11/512:45
DCA
-
LHR
1 stop12h 45m
Air Canada
Tue 2/609:30
LHR
-
DCA
1 stop11h 09m
Air Canada
Deal found 1/4£533

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 1 April 2026.

Round-trip from

£486

One-way from

£270

Popular in

June

Cheapest in

September

Average price

£532

Good round-trip deal

£623 or less

Good one-way deal

£336 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 20/4-5/5
  • 2 total stops
  • 42h 45m total
  • District of Columbia to London
Search Deals
JetBlue
  • JetBlue
  • 14/5
  • 1 total stop
  • 9h 45m total
  • District of Columbia to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
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 1 April 2026.
Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 20/4

12:45-09:35

2 stops15h 50m

London Heathrow

Wed 29/4

07:05-17:00

2 stops14h 55m

£558

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 22/9

12:30-16:00

2 stops22h 30m

London Heathrow

Tue 29/9

19:50-17:00

2 stops26h 10m

£638

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 28/4

22:55-11:20

Nonstop7h 25m

London Heathrow

Wed 13/5

09:55-15:35

1 stop10h 40m

£642

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 9/9

18:35-06:55

Nonstop7h 20m

London Heathrow

Wed 16/9

06:50-13:30

1 stop11h 40m

£642

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 14/4

22:10-10:40

Nonstop7h 30m

London Heathrow

Mon 20/4

16:25-19:25

1 stop32h 00m

£651

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 3/5

22:25-10:50

Nonstop7h 25m

London Heathrow

Tue 12/5

12:35-15:45

Nonstop8h 10m

£665
Fastest return journey

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 14/4

22:55-11:20

Nonstop7h 25m

London Heathrow

Tue 12/5

17:55-20:55

Nonstop8h 00m

£665

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 21/4

17:45-06:20

Nonstop7h 35m

London Heathrow

Tue 28/4

17:05-20:10

Nonstop8h 05m

£665

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 15/4

12:55-08:35

1 stop14h 40m

London Heathrow

Fri 15/5

09:30-15:39

1 stop11h 09m

£667

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 23/4

06:00-20:45

1 stop9h 45m

London Heathrow

Fri 8/5

11:55-22:59

1 stop16h 04m

£676

Flights are sorted by cheapest return flights first.

Deals found on 29/3

Showing 1-10 of 46 resultsSorted by cheapest first
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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 £529). 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 1 April 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to London Heathrow Airport as you normally would.

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 1 April 2026.

The most flights from USDC to LHR are scheduled on a Tuesday (28 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (20 on average).

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

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 £642. 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 TAP AIR PORTUGAL. According to our data, you can fly for as low as £162. Users have also found prices from £232 and £266 on JetBlue and Virgin Atlantic, 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: KLM (90%), Air France (90%), Delta( 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 £277. On average you can expect to pay £521. The most popular route, (Washington, D.C. Dulles Intl - London Heathrow), can usually be booked for £395.

  • 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 £529). 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
Wembley
Croydon
Northampton
Hounslow
Gatwick
Slough
Ilford
Luton
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Bedford
Chelmsford

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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 7 airlines flying from District of Columbia to Heathrow

Discover the top 7 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 1 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£314Average£411FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£374Average£571FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£384Average£578FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£396Average£575FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£463Average£601FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest£498Average£600FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£519Average£730FlexibilityNo 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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