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Cheap flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport from £339

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DCA
22 Apr — 29 Apr1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. Reagan-National are usually found in March or January, booked 41 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Heathrow to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 April 2025.

Round-trip from

£471

One-way from

£339

Popular in

July

Cheapest in

March

Average price

£576
Icelandair
  • Icelandair
  • 15/5-26/5
  • 2 total stops
  • 38h 24m total
  • London to Washington, D.C.
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6/6
  • 6/6
  • 2 total stops
  • 17h 03m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£115 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Heathrow to Reagan-National

Cheapest flights from Heathrow to Reagan-National
Explore the most affordable flight options available from Heathrow to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.

Thu 16/1011:55LHR - DCA
1 stop11h 49mIcelandair
Mon 3/1119:55DCA - LHR
1 stop29h 00mIcelandair
Deal found 16/4£469
Thu 1/508:25LHR - DCA
1 stop14h 35mJetBlue
Thu 8/510:10DCA - LHR
1 stop15h 20mJetBlue
Deal found 16/4£480
Sat 3/506:50LHR - DCA
2 stops13h 59mAir Canada
Sun 4/509:40DCA - LHR
1 stop15h 50mAir Canada
Deal found 16/4£508
Thu 24/410:30LHR - DCA
2 stops15h 38mMultiple Airlines
Wed 30/411:00DCA - LHR
1 stop14h 30mMultiple Airlines
Deal found 16/4£526
Sat 26/414:25LHR - DCA
1 stop12h 50mAmerican Airlines
Sat 10/514:54DCA - LHR
1 stop14h 21mAmerican Airlines
Deal found 16/4£529
Sat 26/414:05LHR - DCA
1 stop12h 03mUnited Airlines
Tue 29/416:10DCA - LHR
1 stop12h 50mUnited Airlines
Deal found 16/4£533
Wed 23/415:00LHR - DCA
1 stop12h 03mBritish Airways
Sun 27/415:54DCA - LHR
1 stop11h 11mBritish Airways
Deal found 16/4£540
Thu 24/409:30LHR - DCA
1 stop10h 54mLufthansa
Sun 27/416:10DCA - LHR
1 stop9h 20mLufthansa
Deal found 16/4£542
Wed 23/411:30LHR - DCA
2 stops16h 40mVirgin Atlantic
Sun 27/412:41DCA - LHR
1 stop13h 34mVirgin Atlantic
Deal found 16/4£553
Thu 24/409:40LHR - DCA
1 stop11h 11mDelta
Wed 30/415:25DCA - LHR
1 stop11h 40mDelta
Deal found 16/4£575
Fri 16/514:40LHR - DCA
1 stop12h 56mIberia
Fri 23/512:35DCA - LHR
1 stop12h 55mIberia
Deal found 16/4£585
Tue 22/419:05LHR - DCA
1 stop32h 24mFinnair
Mon 28/418:05DCA - LHR
1 stop12h 00mFinnair
Deal found 16/4£593

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Reagan-National 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 17 April 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Heathrow

Fly to

Reagan-National

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 15/5

11:55-22:58

1 stop16h 03m

Washington, D.C. Reagan-National

Tue 20/5

06:09-20:45

1 stop9h 36m

£473

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 1/5

08:25-18:00

1 stop14h 35m

Washington, D.C. Reagan-National

Thu 8/5

10:10-06:30

1 stop15h 20m

£480

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 3/5

06:50-15:49

2 stops13h 59m

Washington, D.C. Reagan-National

Sun 4/5

09:40-06:30

1 stop15h 50m

£508

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 26/4

14:25-22:15

1 stop12h 50m

Washington, D.C. Reagan-National

Sat 10/5

14:54-10:15

1 stop14h 21m

£529

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 26/4

14:05-21:08

1 stop12h 03m

Washington, D.C. Reagan-National

Tue 29/4

16:10-10:00

1 stop12h 50m

£533

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 30/4

06:00-19:53

2 stops18h 53m

Washington, D.C. Reagan-National

Sat 3/5

20:40-21:00

2 stops19h 20m

£540

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 16/5

14:40-22:36

1 stop12h 56m

Washington, D.C. Reagan-National

Fri 23/5

12:35-06:30

1 stop12h 55m

£585

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 28/4

20:10-10:15

1 stop19h 05m

Washington, D.C. Reagan-National

Tue 6/5

15:25-08:05

1 stop11h 40m

£594

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 6/5

13:20-19:07

1 stop10h 47m

Washington, D.C. Reagan-National

Fri 16/5

06:35-21:40

1 stop10h 05m

£605

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 27/4

17:30-22:45

2 stops34h 15m

Washington, D.C. Reagan-National

Fri 9/5

06:05-14:35

2 stops27h 30m

£608

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 26 results
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Best time to book a flight from Heathrow to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Heathrow 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 Heathrow Airport to Washington, D.C. Reagan-National Airport

How far ahead should I book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

Use this chart to determine the optimal time to book a return flight from Heathrow to Reagan-National. Price data was last updated on 11 April 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport, you should look to book at least 41 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.

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport (average of £625). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of £934). 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 LHR to DCA?

Find hourly flight availability from Heathrow to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 April 2025.

When flying from London Heathrow Airport to Washington, D.C. Reagan-National 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 10% versus a flight in the afternoon.

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 66.0 mm.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. 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 Reagan-National. Reviews last updated 17 April 2025.
See what other customers who have flown with Delta, KLM and LOT from London to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,916 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
LOT
7.6
Good
1,065 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport round-trip?

    Flying on Icelandair is currently your cheapest option to Washington, D.C. Reagan-National Airport, with prices starting at £471. Additional return tickets that might be worth considering are offered by JetBlue and Lufthansa, with the lowest prices starting at £480 and £487, respectively. Users have found that Icelandair is 28% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. Reagan-National Airport one-way?

    One-way options have recently been found by users for as low as £369 on Lufthansa. Other airlines that offer cheap prices include WestJet from £477 and JetBlue from £511 one-way.

  • Can I find deals for flights from Heathrow to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Heathrow to Reagan-National flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Reagan-National?

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

  • Can I find deals for business class flights from Heathrow to Reagan-National?

    Yes. Cheapflights offers flight deals from Heathrow to Reagan-National 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 Heathrow Airport to Washington, D.C. Reagan-National Airport?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport (average of £625). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of £934). 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
Silver Spring
Arlington
Woodbridge
College Park
Laurel
Tysons

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Top 10 airlines flying from Heathrow to Reagan-National

Discover the top 10 airlines that operate flights from Heathrow to Reagan-National. 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 17 April 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£280Average£572FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£368Average£536FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£386Average£550FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
LufthansaCheapest£486Average£672FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£493Average£736FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£494Average£658FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£497Average£663FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£509Average£628FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£516Average£724FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£563Average£805FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Reagan-National?

Cheapflights makes it easy to find Heathrow to Reagan-National flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Reagan-National?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Reagan-National from Heathrow.

Can Cheapflights find flights from Heathrow to Reagan-National with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Reagan-National flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Reagan-National become cheaper?

Of course! You can now track prices for flights from Heathrow to Reagan-National and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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