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Cheap flights from Washington, D.C. Reagan-National Airport to London from £213

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to London departing on 30/12. 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
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:00 - 07:10
DCA
-
LHR
10h 10m
1 stop
Multiple Airlines Logo
06:50 - 15:24
LHR
-
DCA
13h 34m
2 stops
£543Multiple Airlines
Sun, 1 Nov - Tue, 3 Nov
Air Canada Logo
18:55 - 08:30
DCA
-
LHR
33h 35m
1 stop
Air Canada Logo
06:50 - 21:59
LHR
-
DCA
20h 09m
2 stops
£546Air Canada
Sat, 31 Oct - Tue, 3 Nov
Air Canada Logo
16:00 - 11:20
DCA
-
LHR
14h 20m
2 stops
Air Canada Logo
06:50 - 15:24
LHR
-
DCA
13h 34m
2 stops
£549Air Canada
Sun, 1 Nov - Tue, 3 Nov
JetBlue Logo
13:25 - 06:30
DCA
-
LHR
12h 05m
1 stop
JetBlue Logo
08:15 - 22:59
LHR
-
DCA
19h 44m
1 stop
£577JetBlue
Mon, 24 Aug - Tue, 8 Sep
JetBlue Logo
08:49 - 06:30
DCA
-
LHR
16h 41m
1 stop
JetBlue Logo
08:15 - 22:59
LHR
-
DCA
19h 44m
1 stop
£583JetBlue
Wed, 2 Sep - Sun, 6 Sep
Multiple Airlines Logo
14:30 - 06:30
DCA
-
LHR
11h 00m
1 stop
Multiple Airlines Logo
16:35 - 23:10
LHR
-
DCA
11h 35m
1 stop
£589Multiple Airlines
Mon, 21 Sep - Tue, 29 Sep
JetBlue Logo
06:10 - 20:45
DCA
-
LHR
9h 35m
1 stop
JetBlue Logo
08:40 - 18:01
LHR
-
DCA
14h 21m
1 stop
£590JetBlue
Thu, 6 Aug - Fri, 4 Sep
JetBlue Logo
06:10 - 20:45
DCA
-
LHR
9h 35m
1 stop
JetBlue Logo
08:40 - 18:05
LHR
-
DCA
14h 25m
1 stop
£591JetBlue
Wed, 19 Aug - Thu, 3 Sep
Multiple Airlines Logo
16:00 - 07:10
DCA
-
LHR
10h 10m
1 stop
Multiple Airlines Logo
09:20 - 16:20
LHR
-
DCA
12h 00m
1 stop
£592Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov
Multiple Airlines Logo
16:00 - 07:10
DCA
-
LHR
10h 10m
1 stop
Multiple Airlines Logo
07:25 - 22:48
LHR
-
DCA
20h 23m
1 stop
£592Multiple Airlines
Wed, 4 Nov - Mon, 9 Nov

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

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
JetBlue
24 Aug
DCA13:25Washington, D.C. Reagan-National
12h 05m
1 stop
LHR06:30London Heathrow
8 Sept
LHR08:15London Heathrow
19h 44m
1 stop
DCA22:59Washington, D.C. Reagan-National
£577
JetBlue
2 Sept
DCA08:49Washington, D.C. Reagan-National
16h 41m
1 stop
LHR06:30London Heathrow
6 Sept
LHR08:15London Heathrow
19h 44m
1 stop
DCA22:59Washington, D.C. Reagan-National
£583
JetBlue
6 Aug
DCA06:10Washington, D.C. Reagan-National
9h 35m
1 stop
LHR20:45London Heathrow
4 Sept
LHR08:40London Heathrow
14h 21m
1 stop
DCA18:01Washington, D.C. Reagan-National
£590

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

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
Air Canada
31 Oct
DCA18:55Washington, D.C. Reagan-National
33h 35m
1 stop
LHR08:30London Heathrow
3 Nov
LHR06:50London Heathrow
20h 09m
2 stops
DCA21:59Washington, D.C. Reagan-National
£546
Air Canada
1 Nov
DCA16:00Washington, D.C. Reagan-National
14h 20m
2 stops
LHR11:20London Heathrow
3 Nov
LHR06:50London Heathrow
13h 34m
2 stops
DCA15:24Washington, D.C. Reagan-National
£548

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Reagan-National Airport to London Heathrow 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 279,928 searches. Data last updated 11 July 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 1/11

16:00-07:10

1 stop10h 10m

London Heathrow

Tue 3/11

06:50-15:24

2 stops13h 34m

£543

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 31/10

18:55-08:30

1 stop33h 35m

London Heathrow

Tue 3/11

06:50-21:59

2 stops20h 09m

£546

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 1/11

16:00-11:20

2 stops14h 20m

London Heathrow

Tue 3/11

06:50-15:24

2 stops13h 34m

£548

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 24/8

13:25-06:30

1 stop12h 05m

London Heathrow

Tue 8/9

08:15-22:59

1 stop19h 44m

£577

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 2/9

08:49-06:30

1 stop16h 41m

London Heathrow

Sun 6/9

08:15-22:59

1 stop19h 44m

£583

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 21/9

14:30-06:30

1 stop11h 00m

London Heathrow

Tue 29/9

16:35-23:10

1 stop11h 35m

£589

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 6/8

06:10-20:45

1 stop9h 35m

London Heathrow

Fri 4/9

08:40-18:01

1 stop14h 21m

£590

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 19/8

06:10-20:45

1 stop9h 35m

London Heathrow

Thu 3/9

08:40-18:05

1 stop14h 25m

£591
Fastest return journey

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 3/11

16:00-07:10

1 stop10h 10m

London Heathrow

Tue 10/11

09:20-16:20

1 stop12h 00m

£592

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 4/11

16:00-07:10

1 stop10h 10m

London Heathrow

Mon 9/11

07:25-22:48

1 stop20h 23m

£592

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to London Heathrow 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 Washington, D.C. Reagan-National Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, November is the cheapest month to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £480. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Washington, D.C. Reagan-National Airport averaging around £521.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Washington, D.C. Reagan-National Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £552. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £689.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to London Heathrow Airport in the afternoon for as low as £541. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £633 on average. Flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £711 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport for as low as £518 on momondo.

How have Washington, D.C. Reagan-National Airport to London Heathrow Airport flight prices changed over time?

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. Reagan-National Airport to London Heathrow Airport (DCA to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport

Fastest flight time

9h 15m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport takes 9h 15m
There are no direct flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport. There are no popular flight routes from Washington, D.C. Reagan-National Airport to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport

  • How far is Washington, D.C. Reagan-National to London Heathrow by plane?

    There are 3651.9 mi between Washington, D.C. Reagan-National and London Heathrow. By plane, this route typically takes 9h 15m.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Gatwick
Milton Keynes
Luton
Stratford-upon-Avon
Southend-on-Sea
Slough
Northampton
Maidstone
Ipswich
Swindon
Ilford
Folkestone
Canterbury
Poole
Guildford
Hayes
Hastings
Chichester

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Washington, D.C..

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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