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Cheap flights from London Heathrow Airport to Washington, D.C. from $515

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Washington, D.C. departing on 1/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap round-trip flights

Virgin Atlantic Logo
8:25 pm - 10:59 pmLHR-DCA
30h 34m2 stops
Virgin Atlantic Logo
7:35 pm - 7:50 amDCA-LHR
31h 15m2 stops
$535Virgin Atlantic
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Mon, Oct 27 - Fri, Nov 7
Virgin Atlantic Logo
9:55 am - 10:11 pmLHR-DCA
17h 16m2 stops
Virgin Atlantic Logo
8:40 pm - 6:45 amDCA-LHR
29h 05m1 stop
$536Virgin Atlantic
Find Deal
Thu, Oct 2 - Sun, Oct 19
Air Canada Logo
9:00 am - 7:45 pmLHR-DCA
15h 45m2 stops
Air Canada Logo
12:55 pm - 7:10 amDCA-LHR
13h 15m2 stops
$539Air Canada
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Fri, Nov 7 - Mon, Nov 10
Air Canada Logo
6:50 am - 3:51 pmLHR-DCA
14h 01m2 stops
Air Canada Logo
11:05 am - 7:10 amDCA-LHR
15h 05m1 stop
$540Air Canada
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Thu, Oct 2 - Sun, Dec 7
Multiple Airlines Logo
6:50 am - 3:31 pmLHR-DCA
13h 41m2 stops
Multiple Airlines Logo
11:05 am - 7:10 amDCA-LHR
15h 05m1 stop
$542Multiple Airlines
Find Deal
Mon, Feb 2 - Mon, Feb 9
Multiple Airlines Logo
6:50 am - 3:51 pmLHR-DCA
14h 01m2 stops
Multiple Airlines Logo
6:59 am - 6:30 amDCA-LHR
18h 31m2 stops
$545Multiple Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 12
British Airways Logo
5:00 pm - 11:07 pmLHR-DCA
11h 07m1 stop
British Airways Logo
6:38 am - 9:40 pmDCA-LHR
10h 02m1 stop
$550British Airways
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Mon, Sep 29 - Wed, Oct 15
British Airways Logo
11:45 am - 7:58 pmLHR-DCA
12h 13m1 stop
British Airways Logo
3:44 pm - 7:00 amDCA-LHR
10h 16m1 stop
$552British Airways
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Thu, Oct 30 - Thu, Nov 6
Finnair Logo
1:30 pm - 8:24 pmLHR-DCA
11h 54m1 stop
Finnair Logo
6:59 am - 7:00 amDCA-LHR
20h 01m1 stop
$557Finnair
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Thu, Mar 5 - Thu, Mar 12
Finnair Logo
3:35 pm - 10:57 pmLHR-DCA
11h 22m1 stop
Finnair Logo
3:59 pm - 9:20 amDCA-LHR
12h 21m1 stop
$558Finnair
Find Deal
Fri, Oct 31 - Mon, Nov 3

Virgin Atlantic flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Our best Virgin Atlantic deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Virgin Atlantic
Oct 27
LHR8:25 pmLondon Heathrow
30h 34m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
Nov 7
DCA7:35 pmWashington, D.C. Reagan-National
31h 15m
2 stops
LHR7:50 amLondon Heathrow
$535
Find similar
Virgin Atlantic
Oct 2
LHR9:55 amLondon Heathrow
17h 16m
2 stops
DCA10:11 pmWashington, D.C. Reagan-National
Oct 19
DCA8:40 pmWashington, D.C. Reagan-National
29h 05m
1 stop
LHR6:45 amLondon Heathrow
$536
Find similar
Virgin Atlantic
Oct 6
LHR4:50 pmLondon Heathrow
11h 14m
1 stop
DCA11:04 pmWashington, D.C. Reagan-National
Oct 18
DCA4:03 pmWashington, D.C. Reagan-National
14h 07m
1 stop
LHR11:10 amLondon Heathrow
$553
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Finnair flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Our best Finnair deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Finnair
Mar 5
LHR1:30 pmLondon Heathrow
11h 54m
1 stop
DCA8:24 pmWashington, D.C. Reagan-National
Mar 12
DCA6:59 amWashington, D.C. Reagan-National
20h 01m
1 stop
LHR7:00 amLondon Heathrow
$557
Find similar
Finnair
Sep 23
LHR5:00 pmLondon Heathrow
11h 07m
1 stop
DCA11:07 pmWashington, D.C. Reagan-National
Sep 28
DCA7:45 pmWashington, D.C. Reagan-National
11h 45m
1 stop
LHR12:30 pmLondon Heathrow
$558
Find similar
Finnair
Nov 6
LHR2:45 pmLondon Heathrow
12h 30m
1 stop
DCA10:15 pmWashington, D.C. Reagan-National
Nov 10
DCA5:45 pmWashington, D.C. Reagan-National
10h 55m
1 stop
LHR9:40 amLondon Heathrow
$560
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated September 17, 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

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 10/27

8:25 pm-10:59 pm

2 stops30h 34m

Washington, D.C. Reagan-National

Fri 11/7

7:35 pm-7:50 am

2 stops31h 15m

$535

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 10/2

9:55 am-10:11 pm

2 stops17h 16m

Washington, D.C. Reagan-National

Sun 10/19

8:40 pm-6:45 am

1 stop29h 05m

$536

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 11/7

9:00 am-7:45 pm

2 stops15h 45m

Washington, D.C. Reagan-National

Mon 11/10

12:55 pm-7:10 am

2 stops13h 15m

$539

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 10/2

6:50 am-3:51 pm

2 stops14h 01m

Washington, D.C. Reagan-National

Sun 12/7

11:05 am-7:10 am

1 stop15h 05m

$540

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 2/2

6:50 am-3:31 pm

2 stops13h 41m

Washington, D.C. Reagan-National

Mon 2/9

11:05 am-7:10 am

1 stop15h 05m

$542

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 10/1

6:50 am-3:51 pm

2 stops14h 01m

Washington, D.C. Reagan-National

Sun 10/12

6:59 am-6:30 am

2 stops18h 31m

$545

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 9/29

5:00 pm-11:07 pm

1 stop11h 07m

Washington, D.C. Reagan-National

Wed 10/15

6:38 am-9:40 pm

1 stop10h 02m

$550

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 10/30

11:45 am-7:58 pm

1 stop12h 13m

Washington, D.C. Reagan-National

Thu 11/6

3:44 pm-7:00 am

1 stop10h 16m

$552

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 3/5

1:30 pm-8:24 pm

1 stop11h 54m

Washington, D.C. Reagan-National

Thu 3/12

6:59 am-7:00 am

1 stop20h 01m

$557

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 10/31

3:35 pm-10:57 pm

1 stop11h 22m

Washington, D.C. Reagan-National

Mon 11/3

3:59 pm-9:20 am

1 stop12h 21m

$558

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Washington, D.C. Reagan-National Airport?

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

The month of January is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport, with most prices found around $655. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $664.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from London Heathrow Airport to Washington, D.C. Reagan-National Airport is on a Tuesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Tuesday will often find tickets for as low as $642. Flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $1,485. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest London Heathrow Airport to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the afternoon. Our users have found flights to Washington, D.C. Reagan-National Airport in the afternoon for as low as $701. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is at noon when prices are around $1,590.

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $824 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from London Heathrow Airport for as low as $634 on momondo.

When to book flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Washington, D.C. Reagan-National Airport (LHR to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Direct flights

None
There are no direct flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport. There are no popular flight routes from London Heathrow Airport to Washington, D.C. Reagan-National Airport.
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  • How far is London Heathrow to Washington, D.C. Reagan-National by plane?

    Washington, D.C. Reagan-National is 3651.9 mi away from London Heathrow. Flights usually cover this in 10h 55m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport were last updated today.

  • How old do you have to be to fly from London Heathrow Airport to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents required for your trip to Washington, D.C. Reagan-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Reagan-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Washington, D.C. for you.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from London and alert you when they change.

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