What is the cheapest day to fly from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

Travelers seeking maximum savings on their London Heathrow Airport to Washington, D.C. Reagan-National Airport flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest day to fly round-trip from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

It’s generally more expensive to depart on a Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

February is one of the best times of the year to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport. Prices for February average $733 per person but you can even find prices for as low as $305. The most expensive prices can be found in the month of July. Opting for a February flight can save you 19% on your journey compared to booking in July

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 vacation 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.

$515+ Flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 41% on flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport compared to booking the week you need them. Waiting 50 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $719. For sooner than that we have options available in the next 3 days from $1,067.

Q: What is the cheapest time of day to fly from LHR to DCA?

Unlike at noon, when flights are generally more expensive, you can save up to 39% on flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport by exploring options for tickets in the morning.

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1. Tell us where you want to go

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

Cheap flight deals from Heathrow to Reagan-National

Round-trip from	$534 (Expedia)
One-way from	$515 (Mytrip)
Popular in	December
Cheapest in	January
Average price	$744

From London Heathrow to Washington, D.C. Reagan-National

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One-way flight from London Heathrow to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 5% potential increase in price ($49 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in September 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 September 11, 2025.

Tue 9/238:45 amLHR - DCA

2 stops18h 06mMultiple Airlines

Mon 9/299:40 amDCA - LHR

2 stops17h 15mMultiple Airlines

Deal found 9/8

$534

Wed 11/1911:10 amLHR - DCA

2 stops15h 46mMultiple Airlines

Sun 11/2312:55 pmDCA - LHR

2 stops13h 15mMultiple Airlines

Deal found 9/11

$535

Thu 10/26:50 amLHR - DCA

2 stops14h 01mAir Canada

Mon 10/612:55 pmDCA - LHR

1 stop12h 35mAir Canada

Deal found 9/8

$536

Sat 11/226:00 amLHR - DCA

2 stops20h 56mMultiple Airlines

Sat 12/611:05 amDCA - LHR

2 stops16h 00mMultiple Airlines

Deal found 9/9

$537

Fri 11/79:00 amLHR - DCA

2 stops15h 45mAir Canada

Mon 11/104:10 pmDCA - LHR

1 stop10h 00mAir Canada

Deal found 9/10

$538

Thu 10/96:50 amLHR - DCA

2 stops14h 01mMultiple Airlines

Mon 10/1312:55 pmDCA - LHR

1 stop12h 35mMultiple Airlines

Deal found 9/10

$539

Fri 11/146:50 amLHR - DCA

2 stops13h 41mAir Canada

Sun 11/1611:05 amDCA - LHR

1 stop15h 05mAir Canada

Deal found 9/10

$540

Sat 11/229:00 amLHR - DCA

2 stops15h 45mAir Canada

Sun 11/3011:05 amDCA - LHR

2 stops14h 25mAir Canada

Deal found 9/8

$541

Sun 11/25:50 amLHR - DCA

2 stops13h 41mAir Canada

Wed 11/512:55 pmDCA - LHR

2 stops13h 15mAir Canada

Deal found 9/11

$542

Wed 10/86:50 amLHR - DCA

2 stops14h 01mAir Canada

Fri 10/1712:55 pmDCA - LHR

2 stops12h 35mAir Canada

Deal found 9/10

$543

Thu 10/29:30 amLHR - DCA

1 stop11h 21mMultiple Airlines

Sun 10/59:40 amDCA - LHR

1 stop15h 50mMultiple Airlines

Deal found 9/10

$544

Fri 9/197:45 amLHR - DCA

2 stops14h 57mUnited Airlines

Thu 10/21:00 pmDCA - LHR

1 stop14h 20mUnited Airlines

Deal found 9/11

$545

Best flights from Heathrow to Reagan-National
Discover carefully curated flight deals from Heathrow to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 11/219:00 amLHR - DCA

2 stops15h 45mAir Canada

Tue 11/2512:55 pmDCA - LHR

2 stops13h 15mAir Canada

Deal found 9/11

$539

Sat 11/16:50 amLHR - DCA

2 stops15h 33mUnited Airlines

Sat 11/812:30 pmDCA - LHR

2 stops13h 40mUnited Airlines

Deal found 9/10

$546

Sat 11/16:40 amLHR - DCA

2 stops17h 20mBritish Airways

Fri 11/143:44 pmDCA - LHR

1 stop10h 16mBritish Airways

Deal found 9/10

$569

Thu 11/69:00 amLHR - DCA

2 stops15h 45mAir Canada

Mon 11/1011:05 amDCA - LHR

1 stop15h 05mAir Canada

Deal found 9/11

$539

Tue 9/309:30 amLHR - DCA

1 stop11h 21mUnited Airlines

Mon 11/244:10 pmDCA - LHR

1 stop10h 00mUnited Airlines

Deal found 9/8

$564

Tue 10/286:45 amLHR - DCA

2 stops17h 10mBritish Airways

Fri 11/73:44 pmDCA - LHR

1 stop10h 16mBritish Airways

Deal found 9/10

$569

Sat 9/279:30 amLHR - DCA

1 stop11h 21mUnited Airlines

Sat 10/44:35 pmDCA - LHR

1 stop12h 00mUnited Airlines

Deal found 9/9

$567

Fri 10/311:25 pmLHR - DCA

1 stop12h 31mUnited Airlines

Wed 11/54:10 pmDCA - LHR

1 stop10h 00mUnited Airlines

Deal found 9/9

$567

Fri 9/269:30 amLHR - DCA

1 stop11h 21mUnited Airlines

Mon 9/293:00 pmDCA - LHR

1 stop9h 55mUnited Airlines

Deal found 9/11

$568

Sat 10/49:30 amLHR - DCA

1 stop11h 21mUnited Airlines

Sat 10/116:00 amDCA - LHR

1 stop9h 40mUnited Airlines

Deal found 9/10

$569

Tue 11/111:25 pmLHR - DCA

1 stop13h 31mUnited Airlines

Tue 11/183:00 pmDCA - LHR

1 stop10h 20mUnited Airlines

Deal found 9/10

$569

Last-minute flights from Heathrow to Reagan-National
Discover last-minute flight deals from Heathrow to Reagan-National. Data last updated September 11, 2025 and is based on user searches.

Fri 9/197:45 amLHR - DCA

2 stops14h 57mUnited Airlines

Thu 10/21:00 pmDCA - LHR

1 stop14h 20mUnited Airlines

Deal found 9/11

$545

Fri 9/199:15 amLHR - DCA

1 stop12h 14mBritish Airways

Thu 10/26:45 amDCA - LHR

1 stop9h 55mBritish Airways

Deal found 9/11

$548

Tue 9/238:45 amLHR - DCA

2 stops18h 06mMultiple Airlines

Mon 9/299:40 amDCA - LHR

2 stops17h 15mMultiple Airlines

Deal found 9/8

$534

Tue 9/234:20 pmLHR - DCA

1 stop11h 47mBritish Airways

Mon 9/295:24 pmDCA - LHR

1 stop10h 41mBritish Airways

Deal found 9/8

$547

Mon 9/296:50 amLHR - DCA

2 stops14h 32mUnited Airlines

Tue 10/77:00 pmDCA - LHR

1 stop10h 10mUnited Airlines

Deal found 9/9

$546

Thu 10/26:50 amLHR - DCA

2 stops14h 01mAir Canada

Tue 10/79:40 amDCA - LHR

1 stop15h 50mAir Canada

Deal found 9/8

$536

Thu 10/26:50 amLHR - DCA

2 stops14h 01mAir Canada

Sun 10/59:40 amDCA - LHR

1 stop15h 50mAir Canada

Deal found 9/11

$542

Thu 10/29:30 amLHR - DCA

1 stop11h 21mMultiple Airlines

Sun 10/59:40 amDCA - LHR

1 stop15h 50mMultiple Airlines

Deal found 9/10

$544

Wed 10/86:50 amLHR - DCA

2 stops14h 01mAir Canada

Fri 10/174:35 pmDCA - LHR

1 stop12h 00mAir Canada

Deal found 9/10

$540

Thu 10/96:50 amLHR - DCA

2 stops14h 01mMultiple Airlines

Mon 10/1312:55 pmDCA - LHR

1 stop12h 35mMultiple Airlines

Deal found 9/10

$539

One-way flights from Heathrow to Reagan-National
Search for one-way flight options from Heathrow to Reagan-National. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Fri 2/277:50 amLHR - DCA

3 stops31h 36mMultiple Airlines

Deal found 9/10

$515

Fri 10/36:15 amLHR - DCA

3 stops20h 36mMultiple Airlines

Deal found 9/10

$521

Fri 12/129:50 amLHR - DCA

2 stops14h 55mMultiple Airlines

Deal found 9/11

$524

Tue 10/148:15 amLHR - DCA

1 stop16h 07mJetBlue

Deal found 9/8

$527

Fri 10/178:15 amLHR - DCA

1 stop16h 05mJetBlue

Deal found 9/11

$528

Wed 12/102:50 pmLHR - DCA

3 stops32h 09mMultiple Airlines

Deal found 9/9

$529

Tue 11/1811:40 amLHR - DCA

1 stop29h 53mAmerican Airlines

Deal found 9/10

$534

Thu 11/272:50 pmLHR - DCA

2 stops23h 05mMultiple Airlines

Deal found 9/10

$536

Thu 1/299:55 amLHR - DCA

2 stops41h 44mMultiple Airlines

Deal found 9/11

$537

Mon 2/162:50 pmLHR - DCA

3 stops33h 55mMultiple Airlines

Deal found 9/9

$538

Thu 12/42:50 pmLHR - DCA

3 stops23h 05mMultiple Airlines

Deal found 9/9

$546

Sat 11/226:00 amLHR - DCA

2 stops18h 45mMultiple Airlines

Deal found 9/9

$551

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 11/21

9:00 am-7:45 pm

2 stops15h 45m

Washington, D.C. Reagan-National

Tue 11/25

12:55 pm-7:10 am

2 stops13h 15m

$539

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 11/6

9:00 am-7:45 pm

2 stops15h 45m

Washington, D.C. Reagan-National

Mon 11/10

11:05 am-7:10 am

1 stop15h 05m

$539

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 11/1

6:50 am-6:23 pm

2 stops15h 33m

Washington, D.C. Reagan-National

Sat 11/8

12:30 pm-7:10 am

2 stops13h 40m

$546

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 9/30

9:30 am-3:51 pm

1 stop11h 21m

Washington, D.C. Reagan-National

Mon 11/24

4:10 pm-7:10 am

1 stop10h 00m

$564

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 9/27

9:30 am-3:51 pm

1 stop11h 21m

Washington, D.C. Reagan-National

Sat 10/4

4:35 pm-9:35 am

1 stop12h 00m

$567

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 10/31

1:25 pm-9:56 pm

1 stop12h 31m

Washington, D.C. Reagan-National

Wed 11/5

4:10 pm-7:10 am

1 stop10h 00m

$567

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 9/26

9:30 am-3:51 pm

1 stop11h 21m

Washington, D.C. Reagan-National

Mon 9/29

3:00 pm-5:55 am

1 stop9h 55m

$568

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 11/1

6:40 am-8:00 pm

2 stops17h 20m

Washington, D.C. Reagan-National

Fri 11/14

3:44 pm-7:00 am

1 stop10h 16m

$569

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 10/28

6:45 am-7:55 pm

2 stops17h 10m

Washington, D.C. Reagan-National

Fri 11/7

3:44 pm-7:00 am

1 stop10h 16m

$569

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 10/4

9:30 am-3:51 pm

1 stop11h 21m

Washington, D.C. Reagan-National

Sat 10/11

6:00 am-8:40 pm

1 stop9h 40m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 22 results

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 round-trip 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?

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, 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 $278). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport?
Departing from London Heathrow Airport to Washington, D.C. Reagan-National Airport will take you 15h 33m. The distance from London Heathrow Airport to Washington, D.C. Reagan-National Airport is about 3652 mi. This flight may include one or multiple stops.
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 vacation 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 $278). Flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

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$515+ Cheap flights from Heathrow (LHR) to Reagan-National (DCA)

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Heathrow to Reagan-National with Cheapflights

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3. Compare prices and book

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

Cheap flight deals from Heathrow to Reagan-National

Round-trip from

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Find flight deals from Heathrow to Reagan-National

Cheapest flights from Heathrow to Reagan-NationalExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

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.

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.

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?

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

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?

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

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

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

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

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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 September 11, 2025.