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Cheap flights from London Heathrow Airport to Washington, D.C. from $558

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 6/24. 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

Enter your travel dates to find the best prices.
Delta Logo
9:40 am - 5:43 pm
LHR
-
DCA
13h 03m
1 stop
Delta Logo
5:00 pm - 10:20 am
DCA
-
LHR
12h 20m
1 stop
$590Delta
Mon, Jun 29 - Tue, Jul 14
Delta Logo
4:20 pm - 11:21 pm
LHR
-
DCA
12h 01m
1 stop
Delta Logo
8:50 pm - 1:15 pm
DCA
-
LHR
11h 25m
1 stop
$593Delta
Fri, Jul 3 - Mon, Jul 13
Delta Logo
9:40 am - 4:08 pm
LHR
-
DCA
11h 28m
1 stop
Delta Logo
5:00 pm - 10:20 am
DCA
-
LHR
12h 20m
1 stop
$594Delta
Wed, Jul 1 - Mon, Jul 13
United Airlines Logo
8:00 am - 6:11 pm
LHR
-
DCA
15h 11m
1 stop
United Airlines Logo
11:00 am - 5:55 am
DCA
-
LHR
13h 55m
1 stop
$619United Airlines
Tue, Jun 30 - Wed, Jul 15
United Airlines Logo
9:30 am - 7:48 pm
LHR
-
DCA
15h 18m
1 stop
United Airlines Logo
3:30 pm - 8:30 am
DCA
-
LHR
12h 00m
1 stop
$649United Airlines
Fri, Jul 3 - Thu, Jul 16
Air Canada Logo
9:30 am - 3:39 pm
LHR
-
DCA
11h 09m
1 stop
Air Canada Logo
4:20 pm - 10:00 am
DCA
-
LHR
12h 40m
1 stop
$650Air Canada
Wed, May 27 - Sun, May 31
American Airlines Logo
5:05 pm - 12:44 pm
LHR
-
DCA
24h 39m
1 stop
American Airlines Logo
5:35 pm - 7:50 am
DCA
-
LHR
9h 15m
1 stop
$660American Airlines
Mon, Aug 17 - Tue, Aug 25
United Airlines Logo
12:00 pm - 7:48 pm
LHR
-
DCA
12h 48m
1 stop
United Airlines Logo
1:00 pm - 8:20 am
DCA
-
LHR
14h 20m
1 stop
$679United Airlines
Sun, Aug 9 - Sat, Aug 15
Air Canada Logo
2:05 pm - 9:55 pm
LHR
-
DCA
12h 50m
1 stop
Air Canada Logo
8:40 pm - 11:50 am
DCA
-
LHR
10h 10m
1 stop
$683Air Canada
Thu, Jun 11 - Sun, Jun 21
Virgin Atlantic Logo
11:30 am - 10:59 pm
LHR
-
DCA
16h 29m
2 stops
Virgin Atlantic Logo
6:02 am - 6:45 am
DCA
-
LHR
19h 43m
1 stop
$687Virgin Atlantic
Thu, Jul 16 - Thu, Jul 30

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

Our best Delta deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Delta
Jun 29
LHR9:40 amLondon Heathrow
13h 03m
1 stop
DCA5:43 pmWashington, D.C. Reagan-National
Jul 14
DCA5:00 pmWashington, D.C. Reagan-National
12h 20m
1 stop
LHR10:20 amLondon Heathrow
$590
Delta
Jul 3
LHR4:20 pmLondon Heathrow
12h 01m
1 stop
DCA11:21 pmWashington, D.C. Reagan-National
Jul 13
DCA8:50 pmWashington, D.C. Reagan-National
11h 25m
1 stop
LHR1:15 pmLondon Heathrow
$593
Delta
Jul 1
LHR9:40 amLondon Heathrow
11h 28m
1 stop
DCA4:08 pmWashington, D.C. Reagan-National
Jul 13
DCA5:00 pmWashington, D.C. Reagan-National
12h 20m
1 stop
LHR10:20 amLondon Heathrow
$594

United Airlines flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
United Airlines
Jun 30
LHR8:00 amLondon Heathrow
12h 52m
1 stop
DCA3:52 pmWashington, D.C. Reagan-National
Jul 16
DCA6:10 pmWashington, D.C. Reagan-National
12h 45m
1 stop
LHR11:55 amLondon Heathrow
$619
United Airlines
Jul 3
LHR9:30 amLondon Heathrow
15h 18m
1 stop
DCA7:48 pmWashington, D.C. Reagan-National
Jul 16
DCA3:30 pmWashington, D.C. Reagan-National
12h 00m
1 stop
LHR8:30 amLondon Heathrow
$649
United Airlines
Aug 9
LHR12:00 pmLondon Heathrow
12h 48m
1 stop
DCA7:48 pmWashington, D.C. Reagan-National
Aug 15
DCA1:00 pmWashington, D.C. Reagan-National
14h 20m
1 stop
LHR8:20 amLondon Heathrow
$679

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 May 4, 2026.
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

Cheapest round-trip

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 6/29

9:40 am-5:43 pm

1 stop13h 03m

Washington, D.C. Reagan-National

Tue 7/14

5:00 pm-10:20 am

1 stop12h 20m

$590

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/3

4:20 pm-11:21 pm

1 stop12h 01m

Washington, D.C. Reagan-National

Mon 7/13

8:50 pm-1:15 pm

1 stop11h 25m

$593

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

9:40 am-4:08 pm

1 stop11h 28m

Washington, D.C. Reagan-National

Mon 7/13

5:00 pm-10:20 am

1 stop12h 20m

$594

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 6/30

8:00 am-6:11 pm

1 stop15h 11m

Washington, D.C. Reagan-National

Wed 7/15

11:00 am-5:55 am

1 stop13h 55m

$619

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/3

9:30 am-7:48 pm

1 stop15h 18m

Washington, D.C. Reagan-National

Thu 7/16

3:30 pm-8:30 am

1 stop12h 00m

$649

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 5/27

9:30 am-3:39 pm

1 stop11h 09m

Washington, D.C. Reagan-National

Sun 5/31

4:20 pm-10:00 am

1 stop12h 40m

$650

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 8/17

5:05 pm-12:44 pm

1 stop24h 39m

Washington, D.C. Reagan-National

Tue 8/25

5:35 pm-7:50 am

1 stop9h 15m

$660

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 8/9

12:00 pm-7:48 pm

1 stop12h 48m

Washington, D.C. Reagan-National

Sat 8/15

1:00 pm-8:20 am

1 stop14h 20m

$679
Quickest round-trip

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 6/11

2:05 pm-9:55 pm

1 stop12h 50m

Washington, D.C. Reagan-National

Sun 6/21

8:40 pm-11:50 am

1 stop10h 10m

$683

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 7/16

11:30 am-10:59 pm

2 stops16h 29m

Washington, D.C. Reagan-National

Thu 7/30

6:02 am-6:45 am

1 stop19h 43m

$687

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport, with most prices found around $585. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $599.

How have London Heathrow Airport to Washington, D.C. Reagan-National Airport flight prices changed over time?

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

Fastest flight time

10h 54m

Direct flights

None
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 10h 54m
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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Frequently asked questions about flying from London Heathrow Airport to Washington, D.C. Reagan-National Airport

  • 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 54m, 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
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Linthicum Heights
Tysons
Bethesda
Springfield
Fairfax
College Park

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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