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Cheap flights from London Heathrow Airport to Washington, D.C. from $462

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 11/16. 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.
Air Canada Logo
9:00 am - 7:57 pm
LHR
-
DCA
15h 57m
2 stops
Air Canada Logo
11:00 am - 7:10 am
DCA
-
LHR
15h 10m
1 stop
$596Air Canada
Sat, Nov 7 - Tue, Dec 1
Air Canada Logo
6:50 am - 6:15 pm
LHR
-
DCA
16h 25m
2 stops
Air Canada Logo
4:20 pm - 10:00 am
DCA
-
LHR
12h 40m
1 stop
$601Air Canada
Thu, Oct 15 - Sun, Oct 18
Air Canada Logo
9:30 am - 3:40 pm
LHR
-
DCA
11h 10m
1 stop
Air Canada Logo
6:55 pm - 9:35 am
DCA
-
LHR
9h 40m
1 stop
$610Air Canada
Sun, Sep 27 - Wed, Sep 30
Finnair Logo
9:15 am - 4:13 pm
LHR
-
DCA
11h 58m
1 stop
Finnair Logo
5:00 pm - 8:00 am
DCA
-
LHR
10h 00m
1 stop
$615Finnair
Fri, Jul 10 - Fri, Jul 24
British Airways Logo
9:15 am - 4:13 pm
LHR
-
DCA
11h 58m
1 stop
British Airways Logo
3:23 pm - 6:55 am
DCA
-
LHR
10h 32m
1 stop
$617British Airways
Fri, Jul 10 - Mon, Jul 13
British Airways Logo
9:15 am - 4:13 pm
LHR
-
DCA
11h 58m
1 stop
British Airways Logo
3:23 pm - 6:55 am
DCA
-
LHR
10h 32m
1 stop
$618British Airways
Fri, Jul 10 - Tue, Jul 14
Air Canada Logo
9:30 am - 3:38 pm
LHR
-
DCA
11h 08m
1 stop
Air Canada Logo
9:40 am - 10:00 am
DCA
-
LHR
19h 20m
1 stop
$619Air Canada
Sun, Sep 6 - Thu, Sep 17
Finnair Logo
10:05 am - 5:21 pm
LHR
-
DCA
12h 16m
1 stop
Finnair Logo
3:54 pm - 7:40 am
DCA
-
LHR
10h 46m
1 stop
$620Finnair
Wed, Jul 8 - Wed, Jul 15
Air Canada Logo
8:40 am - 9:48 pm
LHR
-
DCA
18h 08m
2 stops
Air Canada Logo
12:40 pm - 9:00 pm
DCA
-
LHR
27h 20m
2 stops
$621Air Canada
Fri, Aug 21 - Wed, Aug 26
Air Canada Logo
9:30 am - 12:00 pm
LHR
-
DCA
31h 30m
1 stop
Air Canada Logo
12:40 pm - 9:00 pm
DCA
-
LHR
27h 20m
2 stops
$622Air Canada
Thu, Jul 9 - Thu, Jul 16

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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
Sep 15
LHR9:30 amLondon Heathrow
17h 20m
1 stop
DCA9:50 pmWashington, D.C. Reagan-National
Sep 25
DCA6:00 amWashington, D.C. Reagan-National
10h 25m
1 stop
LHR9:25 pmLondon Heathrow
$623
United Airlines
Jul 3
LHR7:45 amLondon Heathrow
11h 38m
1 stop
DCA2:23 pmWashington, D.C. Reagan-National
Jul 15
DCA3:10 pmWashington, D.C. Reagan-National
13h 10m
1 stop
LHR9:20 amLondon Heathrow
$626
United Airlines
Jun 26
LHR9:30 amLondon Heathrow
17h 18m
1 stop
DCA9:48 pmWashington, D.C. Reagan-National
Jul 17
DCA3:10 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR5:55 amLondon Heathrow
$630

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
Nov 7
LHR9:00 amLondon Heathrow
15h 57m
2 stops
DCA7:57 pmWashington, D.C. Reagan-National
Dec 1
DCA11:00 amWashington, D.C. Reagan-National
15h 10m
1 stop
LHR7:10 amLondon Heathrow
$596
Air Canada
Oct 15
LHR6:50 amLondon Heathrow
16h 25m
2 stops
DCA6:15 pmWashington, D.C. Reagan-National
Oct 18
DCA4:20 pmWashington, D.C. Reagan-National
12h 40m
1 stop
LHR10:00 amLondon Heathrow
$601
Air Canada
Sep 27
LHR9:30 amLondon Heathrow
11h 10m
1 stop
DCA3:40 pmWashington, D.C. Reagan-National
Sep 30
DCA6:55 pmWashington, D.C. Reagan-National
9h 40m
1 stop
LHR9:35 amLondon Heathrow
$610

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 23, 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

Sat 11/7

9:00 am-7:57 pm

2 stops15h 57m

Washington, D.C. Reagan-National

Tue 12/1

11:00 am-7:10 am

1 stop15h 10m

$596

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 10/15

6:50 am-6:15 pm

2 stops16h 25m

Washington, D.C. Reagan-National

Sun 10/18

4:20 pm-10:00 am

1 stop12h 40m

$601
Quickest round-trip

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 9/27

9:30 am-3:40 pm

1 stop11h 10m

Washington, D.C. Reagan-National

Wed 9/30

6:55 pm-9:35 am

1 stop9h 40m

$610

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/10

9:15 am-4:13 pm

1 stop11h 58m

Washington, D.C. Reagan-National

Fri 7/24

5:00 pm-8:00 am

1 stop10h 00m

$615

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/10

9:15 am-4:13 pm

1 stop11h 58m

Washington, D.C. Reagan-National

Mon 7/13

3:23 pm-6:55 am

1 stop10h 32m

$617

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 7/10

9:15 am-4:13 pm

1 stop11h 58m

Washington, D.C. Reagan-National

Tue 7/14

3:23 pm-6:55 am

1 stop10h 32m

$618

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 9/6

9:30 am-3:38 pm

1 stop11h 08m

Washington, D.C. Reagan-National

Thu 9/17

9:40 am-10:00 am

1 stop19h 20m

$619

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/8

10:05 am-5:21 pm

1 stop12h 16m

Washington, D.C. Reagan-National

Wed 7/15

3:54 pm-7:40 am

1 stop10h 46m

$620

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 8/21

8:40 am-9:48 pm

2 stops18h 08m

Washington, D.C. Reagan-National

Wed 8/26

12:40 pm-9:00 pm

2 stops27h 20m

$621

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 7/9

9:30 am-12:00 pm

1 stop31h 30m

Washington, D.C. Reagan-National

Thu 7/16

12:40 pm-9:00 pm

2 stops27h 20m

$622

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
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Colonial Beach
Linthicum Heights
Rockville
Silver Spring
Towson
Manassas
Tysons
Springfield
Fairfax
Bethesda
Glen Burnie

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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