How long is the flight from Washington, D.C. Reagan-National Airport to London?

United Airlines, Delta, and KLM can get you from Washington, D.C. Reagan-National Airport to London in just under 10h 10m. Your travel time can differ by up to 3h 36m. The distance from Washington, D.C. Reagan-National Airport to London is about 3652 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Washington, D.C. Reagan-National Airport to London?

The most popular route from Washington, D.C. Reagan-National Airport to London is Washington, D.C. Reagan-National - London Heathrow. You may also consider Washington, D.C. Reagan-National - London Gatwick or Washington, D.C. Reagan-National - London Luton.

What is the cheapest time of day to fly from DCA to LON?

When flying from Washington, D.C. Reagan-National Airport to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Reagan-National to London that include hotel bookings?

Yes. In addition to deals on Reagan-National to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Reagan-National to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to London.

Can I find deals for business class flights from Reagan-National to London?

Yes. Cheapflights offers flight deals from Reagan-National to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£237+ Cheap Flights from Washington, D.C. Reagan-National Airport to London

Cheap flight deals from Reagan-National to London

Enter your travel dates to find the best prices.

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Cheapest flights from Reagan-National to London
Explore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Tue 29/909:40 -

2 stops25h 20m

Mon 5/1020:45 -

3 stops30h 49m

Deal found 12/9£407

Tue 24/1116:00 -

2 stops23h 50m

Sun 29/1121:30 -

3 stops22h 54m

Deal found 14/9£508

Mon 5/1012:50 -

1 stop12h 40m

Thu 15/1014:05 -

1 stop12h 45m

Deal found 13/9£513

Tue 1/1216:00 -

2 stops22h 45m

Thu 10/1218:10 -

3 stops26h 14m

Deal found 11/9£513

Wed 23/916:20 -

2 stops14h 15m

Tue 29/922:00 -

2 stops25h 15m

Deal found 13/9£514

Sun 20/918:19 -

1 stop12h 56m

Tue 29/914:10 -

1 stop14h 00m

Deal found 11/9£515

Wed 25/1116:00 -

2 stops23h 50m

Sun 29/1121:30 -

3 stops22h 54m

Deal found 11/9£516

Wed 11/1111:05 -

2 stops21h 40m

Sun 15/1107:45 -

2 stops19h 14m

Deal found 13/9£516

Thu 15/1011:00 -

2 stops19h 40m

Tue 20/1016:50 -

3 stops32h 09m

Deal found 14/9£518

Wed 11/1111:05 -

2 stops19h 50m

Sun 15/1107:45 -

2 stops19h 14m

Deal found 13/9£518

Tue 10/1109:40 -

2 stops28h 50m

Wed 18/1120:35 -

2 stops31h 03m

Deal found 15/9£522

Sat 28/1106:59 -

2 stops22h 51m

Wed 2/1212:15 -

2 stops15h 23m

Deal found 12/9£523

Best flights from Reagan-National to London
Discover carefully curated flight deals from Reagan-National to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Tue 29/911:00 -

3 stops24h 00m

Mon 5/1020:45 -

3 stops26h 30m

Deal found 12/9£415

Wed 4/1116:00 -

1 stop10h 10m

Tue 6/409:30 -

1 stop10h 44m

Deal found 11/9£551

Tue 6/1017:05 -

1 stop10h 45m

Tue 13/1015:50 -

1 stop12h 05m

Deal found 10/9£553

Thu 18/217:24 -

1 stop10h 51m

Wed 24/213:10 -

1 stop12h 36m

Deal found 15/9£597

Wed 14/1011:55 -

2 stops16h 25m

Wed 21/1007:05 -

2 stops20h 50m

Deal found 14/9£642

Thu 12/1112:29 -

2 stops13h 46m

Sun 15/1113:45 -

2 stops14h 56m

Deal found 10/9£661

Tue 20/1015:38 -

1 stop9h 52m

Sun 1/1112:20 -

1 stop14h 55m

Deal found 12/9£665

Wed 11/1114:06 -

2 stops14h 44m

Mon 16/1110:40 -

2 stops26h 19m

Deal found 14/9£918

Wed 25/1111:05 -

2 stops28h 45m

Sun 29/1121:30 -

3 stops22h 54m

Deal found 11/9£514

Tue 13/1015:15 -

2 stops13h 10m

Wed 21/1010:25 -

2 stops16h 24m

Deal found 11/9£563

Tue 24/1116:00 -

2 stops23h 50m

Sun 29/1121:30 -

3 stops22h 54m

Deal found 13/9£514

Tue 15/1211:05 -

1 stop15h 05m

Tue 22/1208:00 -

1 stop11h 30m

Deal found 13/9£575

Mon 14/1217:02 -

1 stop11h 23m

Wed 23/1211:45 -

2 stops16h 20m

Deal found 11/9£570

Thu 15/1011:00 -

2 stops29h 20m

Tue 20/1022:00 -

2 stops26h 59m

Deal found 13/9£523

Wed 21/1006:08 -

2 stops22h 27m

Sun 25/1019:30 -

2 stops32h 07m

Deal found 14/9£642

Tue 24/1118:55 -

1 stop11h 25m

Sun 6/1215:00 -

1 stop12h 38m

Deal found 15/9£592

Tue 20/1006:20 -

1 stop9h 25m

Wed 21/1008:40 -

1 stop11h 07m

Deal found 12/9£665

Wed 30/912:55 -

2 stops14h 00m

Wed 7/1009:20 -

2 stops18h 47m

Deal found 12/9£586

Sat 24/1006:00 -

1 stop9h 40m

Fri 30/1013:00 -

2 stops31h 28m

Deal found 15/9£594

Sun 11/1011:00 -

2 stops27h 30m

Sun 18/1006:35 -

2 stops16h 40m

Deal found 11/9£543

Fri 13/1112:21 -

2 stops14h 49m

Sun 15/1113:45 -

2 stops14h 56m

Deal found 10/9£756

Mon 26/1019:22 -

2 stops16h 23m

Mon 2/1110:00 -

2 stops17h 55m

Deal found 11/9£599

Wed 4/1111:05 -

3 stops26h 30m

Sun 8/1121:00 -

3 stops23h 24m

Deal found 15/9£555

Fri 25/908:25 -

1 stop16h 30m

Sun 27/909:30 -

1 stop11h 10m

Deal found 13/9£622

Wed 25/1112:29 -

2 stops13h 46m

Tue 1/1209:20 -

2 stops14h 20m

Deal found 11/9£608

Wed 25/1109:40 -

2 stops22h 55m

Sun 29/1120:00 -

2 stops27h 18m

Deal found 11/9£559

Fri 6/1111:05 -

2 stops18h 15m

Wed 11/1108:15 -

2 stops19h 11m

Deal found 15/9£563

Fri 13/1115:30 -

2 stops13h 00m

Mon 16/1107:45 -

2 stops16h 07m

Deal found 12/9£660

Tue 24/1116:00 -

2 stops15h 05m

Sun 29/1120:45 -

3 stops23h 39m

Deal found 13/9£570

Thu 12/1112:26 -

2 stops14h 44m

Sun 15/1113:45 -

2 stops14h 56m

Deal found 14/9£661

Find flight deals from Reagan-National to London

Round-trip from	£407
One-way from	£237
Popular in	June
Cheapest in	January
Average price	£651

29/9-5/10
5 total stops
56h 09m total
Washington, D.C. to London

Search Deals

JetBlue
4/11-31/12
1 total stop
10h 25m total
Washington, D.C. to London

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Fri 27/11

11:00-06:55

1 stop14h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Thu 14/1

06:00-21:40

1 stop10h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Tue 3/11

12:00-06:55

1 stop13h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sat 14/11

06:15-21:40

1 stop10h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Wed 11/11

13:09-06:55

1 stop12h 46m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sun 29/11

06:00-20:55

1 stop9h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£244

Washington, D.C.London

DCA Washington, D.C. Reagan-National - STN London Stansted

DCASTN

Washington, D.C. Reagan-National

Thu 22/10

18:55-14:35

2 stops14h 40m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£250

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LTN London Luton

DCALTN

Washington, D.C. Reagan-National

Thu 22/10

18:55-16:45

2 stops16h 50m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£253

Washington, D.C.London

DCA Washington, D.C. Reagan-National - STN London Stansted

DCASTN

Washington, D.C. Reagan-National

Sat 10/10

18:55-17:35

2 stops17h 40m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£255

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LTN London Luton

DCALTN

Washington, D.C. Reagan-National

Mon 28/9

18:55-15:45

2 stops15h 50m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£257

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Reagan-National to London

Have a flexible travel schedule? Discover the best time to fly to London from Reagan-National with our price prediction graph.

DCA-LON

DCA-LHR

DCA-STN

DCA-LCY

DCA-LGW

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to London

DCA-LON

DCA-LHR

DCA-STN

DCA-LCY

DCA-LGW

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £480). Flying from Washington, D.C. Reagan-National Airport to London in June is currently the most expensive (average of £1,044). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Washington, D.C. Reagan-National Airport to London?

Airfare is below average for this route at the moment.

Washington, D.C. Reagan-National Airport to London flights typically cost between £561 and £662 in September.
The cheapest return price found within the last 5 days was £407 on Multiple Airlines (29 Sept–5 Oct).

Related info for your journey

How long is the flight from Washington, D.C. Reagan-National Airport to London?
United Airlines, Delta, and KLM can get you from Washington, D.C. Reagan-National Airport to London in just under 10h 10m. Your travel time can differ by up to 3h 36m. The distance from Washington, D.C. Reagan-National Airport to London is about 3652 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Washington, D.C. Reagan-National Airport to London?
The most popular route from Washington, D.C. Reagan-National Airport to London is Washington, D.C. Reagan-National - London Heathrow. You may also consider Washington, D.C. Reagan-National - London Gatwick or Washington, D.C. Reagan-National - London Luton.
Can I find deals for flights from Reagan-National to London that include hotel bookings?
Yes. In addition to deals on Reagan-National to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Reagan-National to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to London.
Can I find deals for business class flights from Reagan-National to London?
Yes. Cheapflights offers flight deals from Reagan-National to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London?
Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £480). Flying from Washington, D.C. Reagan-National Airport to London in June is currently the most expensive (average of £1,044). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Can Cheapflights find flights from Reagan-National to London with no change fees?

Need flexible booking options for your flight to London from Reagan-National? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Reagan-National to London become cheaper?

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Cheap flights from Washington, D.C. Reagan-National Airport to London from £237

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Reagan-National to London

Cheapest flights from Reagan-National to LondonExplore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Explore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Best flights from Reagan-National to LondonDiscover carefully curated flight deals from Reagan-National to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Discover carefully curated flight deals from Reagan-National to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Last-minute flights from Reagan-National to LondonDiscover last-minute flight deals from Reagan-National to London. Data last updated 15 September 2026 and is based on user searches.

Discover last-minute flight deals from Reagan-National to London. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Reagan-National to LondonSearch for one-way flight options from Reagan-National to London. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Search for one-way flight options from Reagan-National to London. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Find flight deals from Reagan-National to London

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London that are best for you.

Best time to book a flight from Reagan-National to London

Have a flexible travel schedule? Discover the best time to fly to London from Reagan-National with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London?

How much does it cost for a return flight from Washington, D.C. Reagan-National Airport to London?

Airfare is below average for this route at the moment.

Washington, D.C. Reagan-National Airport to London flights typically cost between £561 and £662 in September.The cheapest return price found within the last 5 days was £407 on Multiple Airlines (29 Sept–5 Oct).

Related info for your journey

How long is the flight from Washington, D.C. Reagan-National Airport to London?

What are the most popular routes from Washington, D.C. Reagan-National Airport to London?

Can I find deals for flights from Reagan-National to London that include hotel bookings?

How can I find direct flights from Reagan-National to London?

Can I find deals for business class flights from Reagan-National to London?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London?

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Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 September 2026.

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Can Cheapflights notify me if prices for flights from Reagan-National to London become cheaper?

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Cheapest flights from Reagan-National to London
Explore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Best flights from Reagan-National to London
Discover carefully curated flight deals from Reagan-National to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Last-minute flights from Reagan-National to London
Discover last-minute flight deals from Reagan-National to London. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Reagan-National to London
Search for one-way flight options from Reagan-National to London. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Washington, D.C. Reagan-National Airport to London flights typically cost between £561 and £662 in September.
The cheapest return price found within the last 5 days was £407 on Multiple Airlines (29 Sept–5 Oct).