Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport from £383

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 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DCA
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. Reagan-National are usually found in March or January, booked 90 days in advance, depart on a Monday or Wednesday and return on a Monday

Find flight deals from Heathrow to Reagan-National

Enter your travel dates to find the best prices.

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 6 November 2025.

Wed 3/1209:20LHR - DCA
1 stop11h 40mIcelandair
Sun 7/1218:59DCA - LHR
1 stop30h 56mIcelandair
Deal found 5/11£433
Wed 10/1212:20LHR - DCA
1 stop15h 39mJetBlue
Sun 14/1217:59DCA - LHR
1 stop31h 56mJetBlue
Deal found 5/11£437
Wed 10/1209:20LHR - DCA
1 stop31h 25mIcelandair
Sun 14/1217:59DCA - LHR
1 stop31h 56mIcelandair
Deal found 5/11£441
Wed 3/1209:20LHR - DCA
1 stop11h 40mJetBlue
Wed 10/1213:45DCA - LHR
1 stop12h 10mJetBlue
Deal found 4/11£448
Wed 3/1209:20LHR - DCA
1 stop15h 20mIcelandair
Sat 6/1219:55DCA - LHR
1 stop30h 00mIcelandair
Deal found 5/11£450
Wed 19/1107:25LHR - DCA
1 stop12h 11mJetBlue
Mon 24/1106:15DCA - LHR
1 stop9h 30mJetBlue
Deal found 5/11£453
Tue 18/1112:20LHR - DCA
1 stop15h 39mJetBlue
Mon 24/1106:15DCA - LHR
1 stop9h 30mJetBlue
Deal found 4/11£455
Fri 21/1112:20LHR - DCA
1 stop15h 39mJetBlue
Mon 24/1117:43DCA - LHR
1 stop10h 47mJetBlue
Deal found 5/11£456
Wed 19/1107:25LHR - DCA
1 stop12h 11mJetBlue
Wed 26/1117:44DCA - LHR
1 stop22h 56mJetBlue
Deal found 5/11£458
Wed 3/1209:20LHR - DCA
1 stop11h 40mJetBlue
Sun 18/120:55DCA - LHR
1 stop29h 00mJetBlue
Deal found 5/11£460
Fri 28/1112:20LHR - DCA
1 stop15h 39mJetBlue
Wed 3/1215:40DCA - LHR
1 stop10h 15mJetBlue
Deal found 5/11£463

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 6 November 2025.

Round-trip from

£424

One-way from

£383

Popular in

December

Cheapest in

March

Average price

£681
Icelandair
  • Icelandair
  • 2/2-9/2
  • 2 total stops
  • 24h 57m total
  • London to Washington, D.C.
Search Deals
JetBlue
  • JetBlue
  • 20/3
  • 1 total stop
  • 19h 32m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 6 November 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

Tue 13/1

09:20-16:19

1 stop11h 59m

Washington, D.C. Reagan-National

Mon 2/2

15:30-06:55

1 stop10h 25m

£448

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 19/11

07:25-14:36

1 stop12h 11m

Washington, D.C. Reagan-National

Mon 24/11

06:15-20:45

1 stop9h 30m

£453

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 4/3

09:20-16:04

1 stop11h 44m

Washington, D.C. Reagan-National

Wed 11/3

14:05-06:55

1 stop12h 50m

£456

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 15/4

08:25-16:59

1 stop13h 34m

Washington, D.C. Reagan-National

Wed 29/4

06:30-20:45

1 stop9h 15m

£467

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 27/11

07:25-14:59

1 stop12h 34m

Washington, D.C. Reagan-National

Wed 3/12

06:00-21:40

1 stop10h 40m

£483

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 12/3

09:20-17:59

1 stop12h 39m

Washington, D.C. Reagan-National

Mon 16/3

06:05-20:45

1 stop10h 40m

£486

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 27/11

07:25-14:59

1 stop12h 34m

Washington, D.C. Reagan-National

Tue 2/12

13:45-06:55

1 stop12h 10m

£486

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 28/11

12:20-22:59

1 stop15h 39m

Washington, D.C. Reagan-National

Thu 4/12

13:45-06:55

1 stop12h 10m

£491

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 28/11

12:20-22:59

1 stop15h 39m

Washington, D.C. Reagan-National

Tue 2/12

13:45-06:55

1 stop12h 10m

£493

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 25/11

07:25-14:59

1 stop12h 34m

Washington, D.C. Reagan-National

Thu 4/12

15:40-06:55

1 stop10h 15m

£494

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 22 results
1
2
3

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 31 October 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 90 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport (average of £357). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of £525). 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 6 November 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 evening, which can drop the price by up to 30% versus a flight in the afternoon.

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 6 November 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport, such as Finnair, Virgin Atlantic, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,335 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Virgin Atlantic
7.5
Good
672 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
JetBlue
7.2
Good
2,907 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Air Canada
7.1
Good
10,410 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,496 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Entertainment

6.9

Overall

7.6

Boarding

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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.

  • How long is the flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

    There are many flights that can get you from London Heathrow Airport to Washington, D.C. Reagan-National Airport in 11h 59m. Fly via JetBlue to get the fastest option. The distance between London Heathrow Airport and Washington, D.C. Reagan-National Airport is about 3652 mi.

  • 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 £375. Additional return tickets that might be worth considering are offered by JetBlue and United Airlines, with the lowest prices starting at £393 and £432, respectively. Users have found that Icelandair is 40% cheaper than the other options available to this destination.

  • 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport (average of £357). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of £525). 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. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
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 8 airlines flying from Heathrow to Reagan-National

Discover the top 8 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 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£375Average£534FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£393Average£635FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest£432Average£654FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£433Average£697FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£449Average£626FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapest£495Average£662FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£502Average£671FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£513Average£636FlexibilityNo cancel feeOn-time76%
Search Finnair 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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.