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Cheap flights from London Heathrow Airport to Washington, D.C. from $546

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 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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.
American Airlines Logo
10:05 am - 5:13 pm
LHR
-
DCA
12h 08m
1 stop
American Airlines Logo
6:30 am - 9:40 pm
DCA
-
LHR
10h 10m
1 stop
$653American Airlines
Wed, Jul 1 - Sun, Jul 12
American Airlines Logo
9:15 am - 8:00 pm
LHR
-
DCA
15h 45m
1 stop
American Airlines Logo
7:07 pm - 12:10 pm
DCA
-
LHR
12h 03m
1 stop
$654American Airlines
Mon, Jun 22 - Mon, Jun 29
British Airways Logo
9:15 am - 8:00 pm
LHR
-
DCA
15h 45m
1 stop
British Airways Logo
3:59 pm - 6:55 pm
DCA
-
LHR
21h 56m
1 stop
$655British Airways
Mon, Jul 6 - Sat, Jul 11
Finnair Logo
2:45 pm - 11:59 pm
LHR
-
DCA
14h 14m
1 stop
Finnair Logo
7:58 pm - 9:40 pm
DCA
-
LHR
20h 42m
1 stop
$656Finnair
Wed, Jul 8 - Sat, Jul 11
Multiple Airlines Logo
12:00 pm - 10:20 pm
LHR
-
DCA
15h 20m
1 stop
Multiple Airlines Logo
3:04 pm - 6:55 am
DCA
-
LHR
10h 51m
1 stop
$658Multiple Airlines
Thu, Jul 16 - Sat, Sep 5
Virgin Atlantic Logo
7:45 pm - 4:48 pm
LHR
-
DCA
26h 03m
2 stops
Virgin Atlantic Logo
8:50 pm - 1:15 pm
DCA
-
LHR
11h 25m
1 stop
$659Virgin Atlantic
Sun, Sep 13 - Fri, Sep 25
British Airways Logo
5:25 pm - 11:33 pm
LHR
-
DCA
11h 08m
1 stop
British Airways Logo
4:59 pm - 8:00 am
DCA
-
LHR
10h 01m
1 stop
$660British Airways
Thu, Aug 6 - Mon, Sep 7
United Airlines Logo
9:30 am - 3:38 pm
LHR
-
DCA
11h 08m
1 stop
United Airlines Logo
6:00 am - 8:40 pm
DCA
-
LHR
9h 40m
1 stop
$661United Airlines
Fri, Jul 17 - Wed, Aug 5
United Airlines Logo
9:30 am - 3:38 pm
LHR
-
DCA
11h 08m
1 stop
United Airlines Logo
2:59 pm - 5:55 am
DCA
-
LHR
9h 56m
1 stop
$662United Airlines
Wed, Jul 8 - Sat, Aug 15
United Airlines Logo
9:30 am - 3:38 pm
LHR
-
DCA
11h 08m
1 stop
United Airlines Logo
6:00 am - 8:40 pm
DCA
-
LHR
9h 40m
1 stop
$663United Airlines
Fri, Jul 24 - Mon, Sep 14

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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
Jul 17
LHR9:30 amLondon Heathrow
11h 08m
1 stop
DCA3:38 pmWashington, D.C. Reagan-National
Aug 4
DCA6:00 amWashington, D.C. Reagan-National
9h 40m
1 stop
LHR8:40 pmLondon Heathrow
$661
United Airlines
Jul 8
LHR9:30 amLondon Heathrow
11h 08m
1 stop
DCA3:38 pmWashington, D.C. Reagan-National
Aug 15
DCA2:59 pmWashington, D.C. Reagan-National
9h 56m
1 stop
LHR5:55 amLondon Heathrow
$662
United Airlines
Jul 24
LHR9:30 amLondon Heathrow
11h 08m
1 stop
DCA3:38 pmWashington, D.C. Reagan-National
Sep 13
DCA4:30 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR7:15 amLondon Heathrow
$663

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

Our best Air Canada deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Air Canada
Aug 18
LHR6:00 amLondon Heathrow
21h 31m
2 stops
DCA10:31 pmWashington, D.C. Reagan-National
Sep 2
DCA8:40 pmWashington, D.C. Reagan-National
10h 10m
1 stop
LHR11:50 amLondon Heathrow
$671
Air Canada
Aug 26
LHR6:00 amLondon Heathrow
20h 48m
2 stops
DCA9:48 pmWashington, D.C. Reagan-National
Sep 1
DCA12:40 pmWashington, D.C. Reagan-National
36h 50m
2 stops
LHR6:30 amLondon Heathrow
$676
Air Canada
Jul 17
LHR2:05 pmLondon Heathrow
25h 13m
1 stop
DCA10:18 amWashington, D.C. Reagan-National
Aug 19
DCA9:40 amWashington, D.C. Reagan-National
15h 50m
1 stop
LHR6:30 amLondon Heathrow
$681

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 June 12, 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

Wed 7/1

10:05 am-5:13 pm

1 stop12h 08m

Washington, D.C. Reagan-National

Sun 7/12

6:30 am-9:40 pm

1 stop10h 10m

$653

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 6/22

9:15 am-8:00 pm

1 stop15h 45m

Washington, D.C. Reagan-National

Mon 6/29

7:07 pm-12:10 pm

1 stop12h 03m

$654

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 7/6

9:15 am-8:00 pm

1 stop15h 45m

Washington, D.C. Reagan-National

Sat 7/11

3:59 pm-6:55 pm

1 stop21h 56m

$655

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/8

2:45 pm-11:59 pm

1 stop14h 14m

Washington, D.C. Reagan-National

Sat 7/11

7:58 pm-9:40 pm

1 stop20h 42m

$656

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 7/16

12:00 pm-10:20 pm

1 stop15h 20m

Washington, D.C. Reagan-National

Sat 9/5

3:04 pm-6:55 am

1 stop10h 51m

$658

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 9/13

7:45 pm-4:48 pm

2 stops26h 03m

Washington, D.C. Reagan-National

Fri 9/25

8:50 pm-1:15 pm

1 stop11h 25m

$659

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 8/6

5:25 pm-11:33 pm

1 stop11h 08m

Washington, D.C. Reagan-National

Mon 9/7

4:59 pm-8:00 am

1 stop10h 01m

$660
Quickest round-trip

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/17

9:30 am-3:38 pm

1 stop11h 08m

Washington, D.C. Reagan-National

Wed 8/5

6:00 am-8:40 pm

1 stop9h 40m

$661

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/8

9:30 am-3:38 pm

1 stop11h 08m

Washington, D.C. Reagan-National

Sat 8/15

2:59 pm-5:55 am

1 stop9h 56m

$662

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/24

9:30 am-3:38 pm

1 stop11h 08m

Washington, D.C. Reagan-National

Mon 9/14

6:00 am-8:40 pm

1 stop9h 40m

$663

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 $583. 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 45m

Direct flights

None
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 10h 45m
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.
Search flight deals

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 45m, 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
Gaithersburg
Fredericksburg
Colonial Beach
Rockville
Silver Spring
Linthicum Heights
Towson
Manassas
Tysons
Springfield
Fairfax
Bethesda
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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