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Cheap flights from London Heathrow Airport to Washington, D.C. from $559

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 9/1. 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.
American Airlines Logo
12:00 pm - 7:59 pm
LHR
-
DCA
12h 59m
1 stop
American Airlines Logo
6:30 am - 9:40 pm
DCA
-
LHR
10h 10m
1 stop
$598American Airlines
Thu, Aug 27 - Wed, Sep 9
JetBlue Logo
8:40 am - 5:46 pm
LHR
-
DCA
14h 06m
1 stop
JetBlue Logo
6:21 am - 8:45 pm
DCA
-
LHR
9h 24m
1 stop
$602JetBlue
Mon, Jun 29 - Mon, Aug 3
American Airlines Logo
9:45 am - 8:59 pm
LHR
-
DCA
16h 14m
1 stop
American Airlines Logo
2:59 pm - 8:00 am
DCA
-
LHR
12h 01m
1 stop
$605American Airlines
Mon, Aug 24 - Mon, Sep 7
Air Canada Logo
2:05 pm - 9:48 pm
LHR
-
DCA
12h 43m
1 stop
Air Canada Logo
12:40 pm - 6:30 am
DCA
-
LHR
12h 50m
1 stop
$607Air Canada
Thu, Aug 27 - Thu, Sep 10
Delta Logo
3:15 pm - 11:44 pm
LHR
-
DCA
13h 29m
1 stop
Delta Logo
5:00 pm - 10:20 am
DCA
-
LHR
12h 20m
1 stop
$608Delta
Wed, Jul 1 - Mon, Aug 3
Air Canada Logo
2:05 pm - 9:48 pm
LHR
-
DCA
12h 43m
1 stop
Air Canada Logo
12:40 pm - 6:30 am
DCA
-
LHR
12h 50m
1 stop
$617Air Canada
Mon, Jun 29 - Thu, Aug 6
United Airlines Logo
7:45 am - 4:57 pm
LHR
-
DCA
14h 12m
1 stop
United Airlines Logo
3:10 pm - 8:20 am
DCA
-
LHR
12h 10m
1 stop
$618United Airlines
Tue, Jun 30 - Tue, Aug 4
United Airlines Logo
8:00 am - 7:10 pm
LHR
-
DCA
16h 10m
1 stop
United Airlines Logo
6:00 am - 8:40 pm
DCA
-
LHR
9h 40m
1 stop
$619United Airlines
Mon, Jul 20 - Wed, Sep 2
Air Canada Logo
2:05 pm - 9:48 pm
LHR
-
DCA
12h 43m
1 stop
Air Canada Logo
6:55 pm - 9:35 am
DCA
-
LHR
9h 40m
1 stop
$623Air Canada
Wed, Jul 1 - Tue, Aug 4
American Airlines Logo
2:10 pm - 11:31 pm
LHR
-
DCA
14h 21m
1 stop
American Airlines Logo
5:35 pm - 7:50 am
DCA
-
LHR
9h 15m
1 stop
$624American Airlines
Thu, Jul 23 - Wed, Sep 2

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

Our best JetBlue deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
Jun 29
LHR8:40 amLondon Heathrow
14h 06m
1 stop
DCA5:46 pmWashington, D.C. Reagan-National
Aug 3
DCA6:21 amWashington, D.C. Reagan-National
9h 24m
1 stop
LHR8:45 pmLondon Heathrow
$602
JetBlue
Jun 5
LHR8:40 amLondon Heathrow
12h 03m
1 stop
DCA3:43 pmWashington, D.C. Reagan-National
Jul 16
DCA6:21 amWashington, D.C. Reagan-National
9h 24m
1 stop
LHR8:45 pmLondon Heathrow
$709
JetBlue
May 27
LHR8:40 amLondon Heathrow
12h 03m
1 stop
DCA3:43 pmWashington, D.C. Reagan-National
Jun 6
DCA9:00 pmWashington, D.C. Reagan-National
28h 30m
1 stop
LHR6:30 amLondon Heathrow
$713

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
LHR7:45 amLondon Heathrow
14h 12m
1 stop
DCA4:57 pmWashington, D.C. Reagan-National
Aug 4
DCA3:10 pmWashington, D.C. Reagan-National
12h 10m
1 stop
LHR8:20 amLondon Heathrow
$618
United Airlines
Jul 20
LHR8:00 amLondon Heathrow
16h 10m
1 stop
DCA7:10 pmWashington, D.C. Reagan-National
Sep 2
DCA6:00 amWashington, D.C. Reagan-National
9h 40m
1 stop
LHR8:40 pmLondon Heathrow
$619
United Airlines
Jun 27
LHR9:30 amLondon Heathrow
12h 27m
1 stop
DCA4:57 pmWashington, D.C. Reagan-National
Aug 6
DCA1:00 pmWashington, D.C. Reagan-National
13h 15m
1 stop
LHR7:15 amLondon Heathrow
$648

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 10, 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

Thu 8/27

12:00 pm-7:59 pm

1 stop12h 59m

Washington, D.C. Reagan-National

Wed 9/9

6:30 am-9:40 pm

1 stop10h 10m

$598

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 6/29

8:40 am-5:46 pm

1 stop14h 06m

Washington, D.C. Reagan-National

Mon 8/3

6:21 am-8:45 pm

1 stop9h 24m

$602

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 8/24

9:45 am-8:59 pm

1 stop16h 14m

Washington, D.C. Reagan-National

Mon 9/7

2:59 pm-8:00 am

1 stop12h 01m

$605

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 8/27

2:05 pm-9:48 pm

1 stop12h 43m

Washington, D.C. Reagan-National

Thu 9/10

12:40 pm-6:30 am

1 stop12h 50m

$607

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

3:15 pm-11:44 pm

1 stop13h 29m

Washington, D.C. Reagan-National

Mon 8/3

5:00 pm-10:20 am

1 stop12h 20m

$608

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 6/29

2:05 pm-9:48 pm

1 stop12h 43m

Washington, D.C. Reagan-National

Thu 8/6

12:40 pm-6:30 am

1 stop12h 50m

$617

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 6/30

7:45 am-4:57 pm

1 stop14h 12m

Washington, D.C. Reagan-National

Tue 8/4

3:10 pm-8:20 am

1 stop12h 10m

$618

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 7/20

8:00 am-7:10 pm

1 stop16h 10m

Washington, D.C. Reagan-National

Wed 9/2

6:00 am-8:40 pm

1 stop9h 40m

$619
Quickest round-trip

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

2:05 pm-9:48 pm

1 stop12h 43m

Washington, D.C. Reagan-National

Tue 8/4

6:55 pm-9:35 am

1 stop9h 40m

$623

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 7/23

2:10 pm-11:31 pm

1 stop14h 21m

Washington, D.C. Reagan-National

Wed 9/2

5:35 pm-7:50 am

1 stop9h 15m

$624

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

11h 08m

Direct flights

None
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 11h 08m
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 11h 08m, 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
Colonial Beach
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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