Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Reagan-National Airport to London from £196

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 7/12. 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
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
Iberia Logo
17:45 - 09:40DCA-LHR
10h 55m1 stop
Iberia Logo
11:25 - 18:57LHR-DCA
36h 32m2 stops
£439Iberia
Find Deal
Tue, 2 Dec - Tue, 9 Dec
Scandinavian Airlines Logo
13:15 - 16:00DCA-LHR
21h 45m2 stops
Scandinavian Airlines Logo
06:40 - 22:12LHR-DCA
20h 32m2 stops
£440Scandinavian Airlines
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Scandinavian Airlines Logo
11:00 - 09:35DCA-LHR
17h 35m2 stops
Scandinavian Airlines Logo
07:05 - 23:12LHR-DCA
21h 07m2 stops
£445Scandinavian Airlines
Find Deal
Mon, 20 Apr - Fri, 15 May
American Airlines Logo
17:24 - 09:15DCA-LHR
10h 51m1 stop
American Airlines Logo
11:40 - 17:55LHR-DCA
11h 15m1 stop
£445American Airlines
Find Deal
Sun, 23 Nov - Tue, 9 Dec
Delta Logo
06:07 - 20:10DCA-LHR
9h 03m1 stop
Delta Logo
08:55 - 17:21LHR-DCA
13h 26m1 stop
£447Delta
Find Deal
Tue, 9 Dec - Tue, 16 Dec
Delta Logo
13:15 - 06:50DCA-LHR
12h 35m1 stop
Delta Logo
06:20 - 17:59LHR-DCA
16h 39m2 stops
£449Delta
Find Deal
Wed, 3 Dec - Wed, 10 Dec
KLM Logo
17:02 - 08:05DCA-LHR
10h 03m1 stop
KLM Logo
16:10 - 22:57LHR-DCA
11h 47m1 stop
£454KLM
Find Deal
Tue, 2 Dec - Tue, 9 Dec
Virgin Atlantic Logo
14:55 - 06:50DCA-LHR
10h 55m1 stop
Virgin Atlantic Logo
09:40 - 17:05LHR-DCA
12h 25m1 stop
£455Virgin Atlantic
Find Deal
Wed, 10 Dec - Tue, 16 Dec
Virgin Atlantic Logo
14:59 - 07:50DCA-LHR
11h 51m1 stop
Virgin Atlantic Logo
09:40 - 21:15LHR-DCA
16h 35m2 stops
£458Virgin Atlantic
Find Deal
Wed, 19 Nov - Fri, 28 Nov
KLM Logo
17:00 - 08:05DCA-LHR
10h 05m1 stop
KLM Logo
16:10 - 22:48LHR-DCA
11h 38m1 stop
£461KLM
Find Deal
Wed, 28 Jan - Tue, 3 Feb

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

Our best Scandinavian Airlines deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
Scandinavian Airlines
17 Nov
DCA11:10Washington, D.C. Reagan-National
23h 50m
2 stops
LHR16:00London Heathrow
22 Nov
LHR17:00London Heathrow
34h 56m
2 stops
DCA22:56Washington, D.C. Reagan-National
£439
Find similar
Scandinavian Airlines
9 Dec
DCA13:15Washington, D.C. Reagan-National
21h 45m
2 stops
LHR16:00London Heathrow
15 Dec
LHR06:40London Heathrow
20h 32m
2 stops
DCA22:12Washington, D.C. Reagan-National
£440
Find similar
Scandinavian Airlines
20 Apr
DCA11:00Washington, D.C. Reagan-National
17h 35m
2 stops
LHR09:35London Heathrow
15 May
LHR07:05London Heathrow
21h 07m
2 stops
DCA23:12Washington, D.C. Reagan-National
£445
Find similar

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

Our best Delta deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
Delta
9 Nov
DCA11:10Washington, D.C. Reagan-National
15h 55m
1 stop
LHR08:05London Heathrow
18 Nov
LHR13:05London Heathrow
11h 46m
1 stop
DCA19:51Washington, D.C. Reagan-National
£445
Find similar
Delta
9 Dec
DCA06:07Washington, D.C. Reagan-National
9h 03m
1 stop
LHR20:10London Heathrow
16 Dec
LHR08:55London Heathrow
13h 26m
1 stop
DCA17:21Washington, D.C. Reagan-National
£447
Find similar
Delta
3 Dec
DCA13:15Washington, D.C. Reagan-National
12h 35m
1 stop
LHR06:50London Heathrow
10 Dec
LHR06:20London Heathrow
16h 39m
2 stops
DCA17:59Washington, D.C. Reagan-National
£449
Find similar

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 4 November 2025.
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

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 2/12

17:45-09:40

1 stop10h 55m

London Heathrow

Tue 9/12

11:25-18:57

2 stops36h 32m

£439

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 9/12

13:15-16:00

2 stops21h 45m

London Heathrow

Mon 15/12

06:40-22:12

2 stops20h 32m

£440

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 20/4

11:00-09:35

2 stops17h 35m

London Heathrow

Fri 15/5

07:05-23:12

2 stops21h 07m

£445

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 23/11

17:24-09:15

1 stop10h 51m

London Heathrow

Tue 9/12

11:40-17:55

1 stop11h 15m

£445

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 9/12

06:07-20:10

1 stop9h 03m

London Heathrow

Tue 16/12

08:55-17:21

1 stop13h 26m

£447

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 3/12

13:15-06:50

1 stop12h 35m

London Heathrow

Wed 10/12

06:20-17:59

2 stops16h 39m

£449

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 2/12

17:02-08:05

1 stop10h 03m

London Heathrow

Tue 9/12

16:10-22:57

1 stop11h 47m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 10/12

14:55-06:50

1 stop10h 55m

London Heathrow

Tue 16/12

09:40-17:05

1 stop12h 25m

£455

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 19/11

14:59-07:50

1 stop11h 51m

London Heathrow

Fri 28/11

09:40-21:15

2 stops16h 35m

£458

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 28/1

17:00-08:05

1 stop10h 05m

London Heathrow

Tue 3/2

16:10-22:48

1 stop11h 38m

£461

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 cheapest month to fly to London Heathrow Airport?

In general, January 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 £492. The month of August is another great option to travel to London Heathrow Airport, with average flight prices from Washington, D.C. Reagan-National Airport averaging around £506.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as £531. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £652.

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 evening. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to London Heathrow Airport in the evening for as low as £588. 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 afternoon when prices are £597 on average. Flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight 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 £592 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 £467 on momondo.

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

As of November 2025, prices for Washington, D.C. Reagan-National Airport to London Heathrow Airport flights are approximately 10% cheaper when compared to flights at the same time last year.

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

Direct flights

None
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

  • 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 03m.

  • 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
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Poole
Guildford
Swanage
Colchester
Dover
Hayes
Chelmsford

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 4/12
Thu 11/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London