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Cheap flights from London Heathrow Airport to Washington, D.C. from $536

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 2/18. 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.
Air Canada Logo
6:50 am - 3:31 pm
LHR
-
DCA
13h 41m
2 stops
Air Canada Logo
6:59 am - 6:30 am
DCA
-
LHR
19h 31m
1 stop
$552Air Canada
qua, mar 4 - qua, mar 11
Air Canada Logo
9:00 am - 7:59 pm
LHR
-
DCA
15h 59m
2 stops
Air Canada Logo
11:05 am - 6:30 am
DCA
-
LHR
14h 25m
2 stops
$553Air Canada
ter, fev 24 - qui, mar 5
Air Canada Logo
6:50 am - 3:31 pm
LHR
-
DCA
13h 41m
2 stops
Air Canada Logo
11:05 am - 6:30 am
DCA
-
LHR
14h 25m
2 stops
$554Air Canada
sex, fev 27 - ter, mar 3
British Airways Logo
3:35 pm - 9:30 pm
LHR
-
DCA
10h 55m
1 stop
British Airways Logo
4:28 pm - 6:30 am
DCA
-
LHR
10h 02m
1 stop
$555British Airways
qui, mar 5 - seg, mar 9
Air Canada Logo
1:45 pm - 10:21 am
LHR
-
DCA
49h 36m
2 stops
Air Canada Logo
12:55 pm - 8:35 pm
DCA
-
LHR
50h 40m
2 stops
$559Air Canada
seg, fev 16 - seg, fev 23
JetBlue Logo
12:20 pm - 10:59 pm
LHR
-
DCA
15h 39m
1 stop
JetBlue Logo
10:00 am - 6:55 am
DCA
-
LHR
16h 55m
1 stop
$561JetBlue
sex, fev 27 - dom, mar 8
Finnair Logo
3:35 pm - 10:03 pm
LHR
-
DCA
11h 28m
1 stop
Finnair Logo
9:35 am - 8:15 am
DCA
-
LHR
17h 40m
1 stop
$562Finnair
dom, fev 1 - dom, fev 8
Finnair Logo
3:35 pm - 10:03 pm
LHR
-
DCA
11h 28m
1 stop
Finnair Logo
1:44 pm - 7:50 am
DCA
-
LHR
13h 06m
1 stop
$563Finnair
dom, fev 1 - dom, fev 8
Air Canada Logo
6:50 am - 9:56 pm
LHR
-
DCA
19h 06m
2 stops
Air Canada Logo
12:55 pm - 10:00 am
DCA
-
LHR
16h 05m
2 stops
$566Air Canada
ter, mar 24 - sex, abr 3
British Airways Logo
10:30 am - 4:45 pm
LHR
-
DCA
11h 15m
1 stop
British Airways Logo
4:43 pm - 7:10 am
DCA
-
LHR
9h 27m
1 stop
$567British Airways
seg, mai 4 - qua, mai 13

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
Mar 4
LHR6:50 amLondon Heathrow
13h 41m
2 stops
DCA3:31 pmWashington, D.C. Reagan-National
Mar 11
DCA6:59 amWashington, D.C. Reagan-National
19h 31m
1 stop
LHR6:30 amLondon Heathrow
$552
Air Canada
Feb 24
LHR9:00 amLondon Heathrow
15h 59m
2 stops
DCA7:59 pmWashington, D.C. Reagan-National
Mar 5
DCA11:05 amWashington, D.C. Reagan-National
14h 25m
2 stops
LHR6:30 amLondon Heathrow
$553
Air Canada
Feb 27
LHR6:50 amLondon Heathrow
13h 41m
2 stops
DCA3:31 pmWashington, D.C. Reagan-National
Mar 3
DCA11:05 amWashington, D.C. Reagan-National
14h 25m
2 stops
LHR6:30 amLondon Heathrow
$554

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
Feb 27
LHR12:20 pmLondon Heathrow
15h 39m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Mar 8
DCA10:00 amWashington, D.C. Reagan-National
16h 55m
1 stop
LHR6:55 amLondon Heathrow
$561
JetBlue
Feb 18
LHR9:20 amLondon Heathrow
11h 44m
1 stop
DCA4:04 pmWashington, D.C. Reagan-National
Feb 22
DCA6:00 amWashington, D.C. Reagan-National
22h 30m
1 stop
LHR9:30 amLondon Heathrow
$570
JetBlue
Feb 2
LHR9:20 amLondon Heathrow
11h 59m
1 stop
DCA4:19 pmWashington, D.C. Reagan-National
Feb 5
DCA6:00 amWashington, D.C. Reagan-National
10h 40m
1 stop
LHR9:40 pmLondon Heathrow
$583

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 janeiro 20, 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

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

qua 3/4

6:50 am-3:31 pm

2 stops13h 41m

Washington, D.C. Reagan-National

qua 3/11

6:59 am-6:30 am

1 stop19h 31m

$552

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

ter 2/24

9:00 am-7:59 pm

2 stops15h 59m

Washington, D.C. Reagan-National

qui 3/5

11:05 am-6:30 am

2 stops14h 25m

$553

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

sex 2/27

6:50 am-3:31 pm

2 stops13h 41m

Washington, D.C. Reagan-National

ter 3/3

11:05 am-6:30 am

2 stops14h 25m

$554

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

qui 3/5

3:35 pm-9:30 pm

1 stop10h 55m

Washington, D.C. Reagan-National

seg 3/9

4:28 pm-6:30 am

1 stop10h 02m

$555

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

seg 2/16

1:45 pm-10:21 am

2 stops49h 36m

Washington, D.C. Reagan-National

seg 2/23

12:55 pm-8:35 pm

2 stops50h 40m

$559

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

sex 2/27

12:20 pm-10:59 pm

1 stop15h 39m

Washington, D.C. Reagan-National

dom 3/8

10:00 am-6:55 am

1 stop16h 55m

$561

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

dom 2/1

3:35 pm-10:03 pm

1 stop11h 28m

Washington, D.C. Reagan-National

dom 2/8

9:35 am-8:15 am

1 stop17h 40m

$562

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

dom 2/1

3:35 pm-10:03 pm

1 stop11h 28m

Washington, D.C. Reagan-National

dom 2/8

1:44 pm-7:50 am

1 stop13h 06m

$563

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

ter 3/24

6:50 am-9:56 pm

2 stops19h 06m

Washington, D.C. Reagan-National

sex 4/3

12:55 pm-10:00 am

2 stops16h 05m

$566

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

seg 5/4

10:30 am-4:45 pm

1 stop11h 15m

Washington, D.C. Reagan-National

qua 5/13

4:43 pm-7:10 am

1 stop9h 27m

$567

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

The month of November is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport, with most prices found around $643. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $659.

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 $768 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.

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 55m

Direct flights

None
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 10h 55m
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
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Rockville
Gaithersburg
Manassas
Springfield
Fairfax
Linthicum Heights
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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