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Cheap flights from London Heathrow Airport to Washington, D.C. from $500

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 1/22. 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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Cheap round-trip flights

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JetBlue Logo
7:25 am - 10:58 pmLHR-DCA
20h 33m1 stop
JetBlue Logo
6:00 am - 8:45 pmDCA-LHR
9h 45m1 stop
$576JetBlue
Find Deal
Tue, Dec 2 - Mon, Dec 8
Icelandair Logo
9:20 am - 9:00 pmLHR-DCA
15h 40m1 stop
Icelandair Logo
11:45 am - 6:55 amDCA-LHR
15h 10m1 stop
$578Icelandair
Find Deal
Mon, Mar 9 - Tue, Mar 17
JetBlue Logo
9:20 am - 4:04 pmLHR-DCA
11h 44m1 stop
JetBlue Logo
6:05 am - 8:45 pmDCA-LHR
10h 40m1 stop
$583JetBlue
Find Deal
Thu, Mar 5 - Thu, Mar 19
JetBlue Logo
9:20 am - 4:59 pmLHR-DCA
11h 39m1 stop
JetBlue Logo
3:55 pm - 6:55 amDCA-LHR
11h 00m1 stop
$584JetBlue
Find Deal
Thu, Mar 12 - Wed, Mar 25
JetBlue Logo
12:20 pm - 10:47 pmLHR-DCA
15h 27m1 stop
JetBlue Logo
6:55 pm - 6:55 amDCA-LHR
31h 00m1 stop
$587JetBlue
Find Deal
Fri, Jan 16 - Sun, Jan 18
Icelandair Logo
9:20 am - 5:35 pmLHR-DCA
13h 15m1 stop
Icelandair Logo
7:55 pm - 6:55 amDCA-LHR
30h 00m1 stop
$588Icelandair
Find Deal
Sun, Jan 18 - Sun, Feb 1
JetBlue Logo
7:25 am - 10:47 pmLHR-DCA
20h 22m1 stop
JetBlue Logo
8:55 pm - 6:55 amDCA-LHR
29h 00m1 stop
$589JetBlue
Find Deal
Wed, Jan 7 - Sun, Jan 11
Icelandair Logo
7:25 am - 10:59 pmLHR-DCA
20h 34m1 stop
Icelandair Logo
6:00 am - 9:30 amDCA-LHR
22h 30m1 stop
$591Icelandair
Find Deal
Wed, Dec 10 - Sun, Dec 14
JetBlue Logo
12:20 pm - 10:47 pmLHR-DCA
15h 27m1 stop
JetBlue Logo
6:15 am - 9:40 pmDCA-LHR
10h 25m1 stop
$592JetBlue
Find Deal
Mon, Jan 12 - Tue, Jan 20
Icelandair Logo
7:25 am - 10:59 pmLHR-DCA
20h 34m1 stop
Icelandair Logo
7:30 am - 6:55 amDCA-LHR
18h 25m1 stop
$593Icelandair
Find Deal
Wed, Dec 10 - Sun, Dec 14

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
Dec 2
LHR7:25 amLondon Heathrow
20h 33m
1 stop
DCA10:58 pmWashington, D.C. Reagan-National
Dec 8
DCA6:00 amWashington, D.C. Reagan-National
9h 45m
1 stop
LHR8:45 pmLondon Heathrow
$576
Find similar
JetBlue
Mar 5
LHR9:20 amLondon Heathrow
11h 44m
1 stop
DCA4:04 pmWashington, D.C. Reagan-National
Mar 19
DCA6:05 amWashington, D.C. Reagan-National
10h 40m
1 stop
LHR8:45 pmLondon Heathrow
$583
Find similar
JetBlue
Mar 12
LHR9:20 amLondon Heathrow
11h 39m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
Mar 25
DCA3:55 pmWashington, D.C. Reagan-National
11h 00m
1 stop
LHR6:55 amLondon Heathrow
$584
Find similar

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

Our best Icelandair deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Icelandair
Mar 9
LHR9:20 amLondon Heathrow
15h 40m
1 stop
DCA9:00 pmWashington, D.C. Reagan-National
Mar 17
DCA11:45 amWashington, D.C. Reagan-National
15h 10m
1 stop
LHR6:55 amLondon Heathrow
$578
Find similar
Icelandair
Jan 18
LHR9:20 amLondon Heathrow
13h 15m
1 stop
DCA5:35 pmWashington, D.C. Reagan-National
Feb 1
DCA7:55 pmWashington, D.C. Reagan-National
30h 00m
1 stop
LHR6:55 amLondon Heathrow
$588
Find similar
Icelandair
Dec 10
LHR7:25 amLondon Heathrow
20h 34m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Dec 14
DCA6:00 amWashington, D.C. Reagan-National
22h 30m
1 stop
LHR9:30 amLondon Heathrow
$591
Find similar

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 November 13, 2025.
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

Tue 12/2

7:25 am-10:58 pm

1 stop20h 33m

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-8:45 pm

1 stop9h 45m

$576

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 3/9

9:20 am-9:00 pm

1 stop15h 40m

Washington, D.C. Reagan-National

Tue 3/17

11:45 am-6:55 am

1 stop15h 10m

$578

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 3/5

9:20 am-4:04 pm

1 stop11h 44m

Washington, D.C. Reagan-National

Thu 3/19

6:05 am-8:45 pm

1 stop10h 40m

$583

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 3/12

9:20 am-4:59 pm

1 stop11h 39m

Washington, D.C. Reagan-National

Wed 3/25

3:55 pm-6:55 am

1 stop11h 00m

$584

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 1/16

12:20 pm-10:47 pm

1 stop15h 27m

Washington, D.C. Reagan-National

Sun 1/18

6:55 pm-6:55 am

1 stop31h 00m

$587

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 1/18

9:20 am-5:35 pm

1 stop13h 15m

Washington, D.C. Reagan-National

Sun 2/1

7:55 pm-6:55 am

1 stop30h 00m

$588

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 1/7

7:25 am-10:47 pm

1 stop20h 22m

Washington, D.C. Reagan-National

Sun 1/11

8:55 pm-6:55 am

1 stop29h 00m

$589

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/10

7:25 am-10:59 pm

1 stop20h 34m

Washington, D.C. Reagan-National

Sun 12/14

6:00 am-9:30 am

1 stop22h 30m

$591

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 1/12

12:20 pm-10:47 pm

1 stop15h 27m

Washington, D.C. Reagan-National

Tue 1/20

6:15 am-9:40 pm

1 stop10h 25m

$592

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/10

7:25 am-10:59 pm

1 stop20h 34m

Washington, D.C. Reagan-National

Sun 12/14

7:30 am-6:55 am

1 stop18h 25m

$593

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 January is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport, with most prices found around $657. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $674.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from London Heathrow Airport to Washington, D.C. Reagan-National Airport is on a Tuesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Tuesday will often find tickets for as low as $642. Flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $1,485. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest London Heathrow Airport to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the afternoon. Our users have found flights to Washington, D.C. Reagan-National Airport in the afternoon for as low as $701. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is at noon when prices are around $1,590.

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 $815 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.

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

Direct flights

None
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 11h 39m, 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
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie
Linthicum Heights
Springfield

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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