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Cheap flights from London Heathrow Airport to Washington, D.C. from $520

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 9/4. 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. (LHR-DCA)

Cheap round-trip flights

Icelandair Logo
8:15 am - 10:56 pmLHR-DCA
19h 41m1 stop
Icelandair Logo
6:19 am - 8:45 pmDCA-LHR
9h 26m1 stop
$581Icelandair
Find Deal
Tue, Sep 9 - Thu, Sep 18
JetBlue Logo
7:25 am - 2:50 pmLHR-DCA
12h 25m1 stop
JetBlue Logo
5:43 pm - 9:30 amDCA-LHR
10h 47m1 stop
$585JetBlue
Find Deal
Sat, Nov 15 - Mon, Nov 24
JetBlue Logo
11:55 am - 7:20 pmLHR-DCA
12h 25m1 stop
JetBlue Logo
2:59 pm - 6:30 amDCA-LHR
10h 31m1 stop
$587JetBlue
Find Deal
Thu, Oct 2 - Wed, Oct 8
Logo
9:00 am - 9:56 pmLHR-DCA
17h 56m2 stops
Logo
11:05 am - 8:05 amDCA-LHR
16h 00m2 stops
$588
Find Deal
Fri, Jan 23 - Mon, Feb 2
JetBlue Logo
8:15 am - 7:22 pmLHR-DCA
16h 07m1 stop
JetBlue Logo
6:19 am - 8:45 pmDCA-LHR
9h 26m1 stop
$589JetBlue
Find Deal
Sun, Sep 7 - Thu, Sep 18
Icelandair Logo
8:15 am - 7:20 pmLHR-DCA
16h 05m1 stop
Icelandair Logo
1:20 pm - 6:30 amDCA-LHR
12h 10m1 stop
$590Icelandair
Find Deal
Mon, Sep 15 - Mon, Sep 22
Air Canada Logo
6:50 am - 3:51 pmLHR-DCA
14h 01m2 stops
Air Canada Logo
6:00 am - 6:30 amDCA-LHR
19h 30m1 stop
$592Air Canada
Find Deal
Sat, Sep 20 - Sat, Sep 27
Air Canada Logo
6:50 am - 3:31 pmLHR-DCA
13h 41m2 stops
Air Canada Logo
11:05 am - 7:10 amDCA-LHR
15h 05m1 stop
$593Air Canada
Find Deal
Thu, Jan 8 - Sun, Jan 25
Virgin Atlantic Logo
4:50 pm - 11:41 pmLHR-DCA
11h 51m1 stop
Virgin Atlantic Logo
5:00 pm - 9:50 amDCA-LHR
11h 50m1 stop
$625Virgin Atlantic
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Sun, Sep 7 - Thu, Sep 18
British Airways Logo
11:30 am - 11:07 pmLHR-DCA
16h 37m2 stops
British Airways Logo
3:35 pm - 6:20 amDCA-LHR
9h 45m1 stop
$631British Airways
Find Deal
Mon, Sep 22 - Mon, Sep 29

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
Sep 9
LHR8:15 amLondon Heathrow
19h 41m
1 stop
DCA10:56 pmWashington, D.C. Reagan-National
Sep 18
DCA6:19 amWashington, D.C. Reagan-National
9h 26m
1 stop
LHR8:45 pmLondon Heathrow
$581
Find similar
Icelandair
Sep 15
LHR8:15 amLondon Heathrow
16h 05m
1 stop
DCA7:20 pmWashington, D.C. Reagan-National
Sep 22
DCA1:20 pmWashington, D.C. Reagan-National
12h 10m
1 stop
LHR6:30 amLondon Heathrow
$590
Find similar
Icelandair
Oct 31
LHR7:25 amLondon Heathrow
11h 25m
1 stop
DCA2:50 pmWashington, D.C. Reagan-National
Nov 3
DCA4:55 pmWashington, D.C. Reagan-National
22h 50m
1 stop
LHR8:45 pmLondon Heathrow
$596
Find similar

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
Nov 15
LHR7:25 amLondon Heathrow
12h 25m
1 stop
DCA2:50 pmWashington, D.C. Reagan-National
Nov 24
DCA5:43 pmWashington, D.C. Reagan-National
10h 47m
1 stop
LHR9:30 amLondon Heathrow
$585
Find similar
JetBlue
Oct 2
LHR11:55 amLondon Heathrow
12h 25m
1 stop
DCA7:20 pmWashington, D.C. Reagan-National
Oct 8
DCA2:59 pmWashington, D.C. Reagan-National
10h 31m
1 stop
LHR6:30 amLondon Heathrow
$587
Find similar
JetBlue
Sep 7
LHR8:15 amLondon Heathrow
16h 07m
1 stop
DCA7:22 pmWashington, D.C. Reagan-National
Sep 18
DCA6:19 amWashington, D.C. Reagan-National
9h 26m
1 stop
LHR8:45 pmLondon Heathrow
$589
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 August 26, 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 9/9

8:15 am-10:56 pm

1 stop19h 41m

Washington, D.C. Reagan-National

Thu 9/18

6:19 am-8:45 pm

1 stop9h 26m

$581

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 11/15

7:25 am-2:50 pm

1 stop12h 25m

Washington, D.C. Reagan-National

Mon 11/24

5:43 pm-9:30 am

1 stop10h 47m

$585

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 10/2

11:55 am-7:20 pm

1 stop12h 25m

Washington, D.C. Reagan-National

Wed 10/8

2:59 pm-6:30 am

1 stop10h 31m

$587

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 1/23

9:00 am-9:56 pm

2 stops17h 56m

Washington, D.C. Reagan-National

Mon 2/2

11:05 am-8:05 am

2 stops16h 00m

$588

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 9/7

8:15 am-7:22 pm

1 stop16h 07m

Washington, D.C. Reagan-National

Thu 9/18

6:19 am-8:45 pm

1 stop9h 26m

$589

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 9/15

8:15 am-7:20 pm

1 stop16h 05m

Washington, D.C. Reagan-National

Mon 9/22

1:20 pm-6:30 am

1 stop12h 10m

$590

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 9/20

6:50 am-3:51 pm

2 stops14h 01m

Washington, D.C. Reagan-National

Sat 9/27

6:00 am-6:30 am

1 stop19h 30m

$592

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 1/8

6:50 am-3:31 pm

2 stops13h 41m

Washington, D.C. Reagan-National

Sun 1/25

11:05 am-7:10 am

1 stop15h 05m

$593

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 9/7

4:50 pm-11:41 pm

1 stop11h 51m

Washington, D.C. Reagan-National

Thu 9/18

5:00 pm-9:50 am

1 stop11h 50m

$625

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 9/22

11:30 am-11:07 pm

2 stops16h 37m

Washington, D.C. Reagan-National

Mon 9/29

3:35 pm-6:20 am

1 stop9h 45m

$631

Flights are sorted by cheapest round-trip flights 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 $655. 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 $664.

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 $824 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 21m, 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
Gettysburg
Arlington
National Harbor
Woodbridge
Waldorf
Tysons
Laurel
Silver Spring
Colonial Beach
Fredericksburg
Towson
Manassas
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie
Springfield
Linthicum Heights

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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