How long is the flight from Washington, D.C. to London?

Departing from Washington, D.C. to London will take you 10h 20m. The distance between Washington, D.C. and London is about 3641 mi. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines flying from Washington, D.C. to London round-trip?

British Airways, at £432, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Virgin Atlantic and Icelandair. These flights start at 33% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Washington, D.C. to London one-way?

The cheapest airline one-way is Virgin Atlantic, with whom users have recently found tickets for as low as £215. However, be on the lookout for offers from British Airways and United Airlines, as they are both options that can get you from Washington, D.C. to London for a low price.

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. to London?

The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow.

What are the cheapest flights from Washington, D.C. to London?

Looking at all options, your cheapest flight can be booked for £230. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £437 on average, our data indicates £572 when flying from Washington, D.C. to London.

What are the most reliable airlines from Washington, D.C. to London?

Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Iberia (87%), Aer Lingus (81%), KLM( 78%).

What are the most popular airlines that fly from Washington, D.C. to London?

Before booking your flight from Washington, D.C. to London check out the most popular airlines for this route: British Airways, United Airlines or Virgin Atlantic.

Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to London?

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

Can I find deals for business class flights from Washington, D.C. to London?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

£216+ Cheap Flights from Washington, D.C. to London

Cheapflights Tip: The best prices from Washington, D.C. to London are usually found in January or February, booked 74 days in advance, depart on a Tuesday or Sunday and return on a Friday

Cheap flight deals from Washington, D.C. to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Sat 5/1220:30 -

2 stops19h 50m

Mon 7/1206:40 -

1 stop15h 35m

Deal found 19/10£503

Wed 2/1222:30 -

1 stop11h 35m

Wed 23/1210:40 -

1 stop14h 50m

Deal found 18/10£506

Sat 5/1217:25 -

1 stop14h 15m

Tue 8/1206:00 -

1 stop13h 40m

Deal found 18/10£507

Mon 30/1119:40 -

1 stop14h 50m

Tue 8/1208:00 -

1 stop15h 30m

Deal found 19/10£508

Mon 14/1219:40 -

1 stop13h 25m

Sat 16/107:00 -

1 stop16h 30m

Deal found 16/10£508

Tue 1/1219:40 -

2 stops16h 10m

Tue 8/1207:50 -

2 stops15h 40m

Deal found 17/10£508

Mon 14/1219:40 -

1 stop13h 25m

Thu 7/106:00 -

1 stop17h 30m

Deal found 20/10£508

Wed 2/1211:05 -

3 stops25h 25m

Mon 7/1218:30 -

3 stops32h 29m

Deal found 17/10£509

Sun 1/1120:50 -

1 stop17h 05m

Tue 10/1109:40 -

1 stop14h 40m

Deal found 17/10£510

Tue 10/1109:55 -

2 stops20h 50m

Sat 14/1121:30 -

2 stops27h 35m

Deal found 16/10£510

Sun 29/1119:40 -

2 stops21h 05m

Wed 2/1219:30 -

2 stops28h 00m

Deal found 19/10£511

Wed 2/1209:05 -

2 stops22h 30m

Mon 7/1221:30 -

2 stops27h 35m

Deal found 19/10£511

Best flights from Washington, D.C. to London
Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Wed 13/119:40 -

1 stop12h 20m

Wed 20/108:00 -

1 stop15h 30m

Deal found 17/10£544

Sat 16/117:25 -

1 stop11h 25m

Tue 26/121:20 -

2 stops28h 10m

Deal found 15/10£555

Mon 16/1120:30 -

2 stops14h 55m

Fri 20/1119:50 -

2 stops28h 00m

Deal found 19/10£578

Tue 6/423:20 -

1 stop10h 20m

Mon 12/415:40 -

1 stop32h 45m

Deal found 19/10£621

Wed 9/1213:00 -

1 stop12h 55m

Fri 11/1212:20 -

1 stop15h 32m

Deal found 16/10£625

Thu 18/220:10 -

1 stop30h 55m

Sun 21/206:50 -

1 stop12h 40m

Deal found 19/10£630

Tue 16/319:40 -

1 stop14h 05m

Fri 26/310:00 -

1 stop10h 55m

Deal found 19/10£649

Sun 10/118:55 -

Nonstop7h 10m

Thu 21/113:50 -

Nonstop8h 15m

Deal found 17/10£687

Wed 18/1112:35 -

2 stops22h 10m

Wed 25/1110:00 -

2 stops19h 41m

Deal found 19/10£731

Thu 11/219:40 -

1 stop12h 20m

Thu 18/206:00 -

1 stop17h 30m

Deal found 15/10£562

Wed 17/323:30 -

1 stop11h 35m

Mon 22/311:00 -

2 stops32h 40m

Deal found 17/10£577

Thu 4/219:40 -

1 stop12h 20m

Thu 11/206:00 -

1 stop17h 30m

Deal found 15/10£563

Wed 24/320:40 -

1 stop13h 00m

Sun 4/415:40 -

1 stop32h 45m

Deal found 19/10£621

Sun 15/1106:15 -

1 stop9h 40m

Tue 24/1112:20 -

1 stop15h 33m

Deal found 17/10£628

Thu 3/1217:25 -

1 stop11h 25m

Fri 11/1221:35 -

2 stops22h 40m

Deal found 16/10£592

Tue 2/218:20 -

Nonstop7h 20m

Fri 12/209:30 -

1 stop11h 25m

Deal found 19/10£654

Wed 30/1220:30 -

2 stops17h 20m

Wed 6/107:05 -

2 stops15h 10m

Deal found 15/10£670

Tue 23/323:20 -

1 stop10h 20m

Sun 4/415:40 -

1 stop32h 45m

Deal found 19/10£621

Fri 4/1220:50 -

1 stop12h 15m

Thu 10/1208:55 -

2 stops39h 10m

Deal found 15/10£565

Tue 2/214:50 -

1 stop11h 05m

Wed 17/212:20 -

1 stop15h 36m

Deal found 15/10£628

Wed 4/1118:55 -

Nonstop7h 25m

Wed 11/1106:30 -

1 stop14h 25m

Deal found 17/10£693

Sun 6/1218:55 -

Nonstop7h 10m

Sun 13/1213:50 -

Nonstop8h 15m

Deal found 16/10£721

Mon 11/118:20 -

Nonstop7h 20m

Wed 20/109:00 -

1 stop13h 00m

Deal found 17/10£662

Wed 11/1120:30 -

2 stops14h 55m

Sat 14/1117:00 -

2 stops47h 52m

Deal found 17/10£670

Mon 4/113:00 -

2 stops14h 35m

Sun 21/211:30 -

2 stops16h 25m

Deal found 17/10£743

Wed 11/1119:05 -

1 stop30h 45m

Thu 19/1111:00 -

1 stop27h 12m

Deal found 16/10£565

Mon 30/1117:25 -

2 stops22h 10m

Mon 7/1221:35 -

2 stops22h 05m

Deal found 16/10£628

Mon 11/106:00 -

1 stop10h 40m

Fri 22/112:20 -

1 stop15h 35m

Deal found 17/10£628

Sun 21/320:40 -

1 stop10h 10m

Mon 29/321:25 -

1 stop29h 50m

Deal found 19/10£658

Tue 12/118:20 -

Nonstop7h 20m

Thu 21/109:00 -

1 stop13h 00m

Deal found 17/10£662

Find flight deals from Washington, D.C. to London

Round-trip from	£503
One-way from	£216
Popular in	June
Cheapest in	January
Average price	£654
Good round-trip deal	£646 or less
Good one-way deal	£380 or less

Scandinavian Airlines
5/12-7/12
3 total stops
35h 25m total
Washington, D.C. to London

Search Deals

5/11-31/12
3 total stops
22h 30m total
Washington, D.C. to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£101 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from Washington, D.C. (WAS) to London (LON).

Search Deals

Price to beat on a one-way flight from Washington, D.C. (WAS) to London (LON).

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 29/3

18:40-07:00

Nonstop7h 20m

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

Mon 15/3

11:00-07:10

1 stop16h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£246

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sat 6/2

06:00-21:40

1 stop10h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£247

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 8/2

12:15-07:55

1 stop14h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£247

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Tue 9/2

19:40-10:55

1 stop10h 15m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LGW London Gatwick

IADLGW

Washington, D.C. Dulles Intl

Wed 24/2

18:30-15:45

2 stops16h 15m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Tue 23/2

10:30-15:45

2 stops24h 15m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Sun 24/1

10:30-09:00

2 stops17h 30m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Sun 21/2

10:30-15:45

2 stops24h 15m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LTN London Luton

IADLTN

Washington, D.C. Dulles Intl

Mon 23/11

19:40-19:25

3 stops42h 45m

London Luton

Wed 31/12

00:00-18:00

Nonstop0h 00m

£254

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.

WAS-LON

BWI-LGW

BWI-LHR

IAD-LGW

IAD-LTN

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. to London

WAS-LON

BWI-LGW

BWI-LHR

IAD-LGW

IAD-LTN

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £508). Flying from Washington, D.C. to London in June is currently the most expensive (average of £953). 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.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to London as you normally would.

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

Airfare is below average for this route at the moment.

Washington, D.C. to London flights typically cost between £535 and £764 in December.
The cheapest return price found within the last 5 days was £503 on Scandinavian Airlines (5 Dec–7 Dec).

What’s the top stopover airport for flights from Washington, D.C. to London?

Dublin (DUB) – chosen by Cheapflights users on 48% of one-stop itineraries from Washington, D.C. to London on Cheapflights.

What’s the cheapest stopover airport for flights from Washington, D.C. to London?

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £551.

What’s the fastest stopover option from Washington, D.C. to London?

Flights via New York (JFK) have the shortest average one-way travel time for one-stop routes: 9h 00m.

Which airport typically offers the quickest stopover for flights from Washington, D.C. to London?

Flights via New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 15m.

How often are flights from Washington, D.C. to London delayed?

About 17% of weekly flights between Washington, D.C. and London have experienced delays in the past year, with the average delay time being 173 minutes.

What is the most punctual flight time for Washington, D.C. to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to London flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 13% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. to London?

The best time to book flights from Washington, D.C. to London is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing London

Read reviews from past customers who have flown with KLM,Virgin Atlantic, andUnited Airlines from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

KLM

7.8

Good

1,591 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Virgin Atlantic

7.5

Good

696 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

United Airlines

7.3

Good

10,388 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

American Airlines

7.0

Good

12,181 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

British Airways

6.7

Okay

8,266 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

How long is the flight from Washington, D.C. to London?
Departing from Washington, D.C. to London will take you 10h 20m. The distance between Washington, D.C. and London is about 3641 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Washington, D.C. to London round-trip?
British Airways, at £432, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Virgin Atlantic and Icelandair. These flights start at 33% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. to London one-way?
The cheapest airline one-way is Virgin Atlantic, with whom users have recently found tickets for as low as £215. However, be on the lookout for offers from British Airways and United Airlines, as they are both options that can get you from Washington, D.C. to London for a low price.
What are the most popular routes from Washington, D.C. to London?
The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow.
What are the most reliable airlines from Washington, D.C. to London?
Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Iberia (87%), Aer Lingus (81%), KLM( 78%).
What are the cheapest flights from Washington, D.C. to London?
Looking at all options, your cheapest flight can be booked for £230. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £437 on average, our data indicates £572 when flying from Washington, D.C. to London.
Can I find deals for flights from Washington, D.C. to London that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to London.
Can I find deals for business class flights from Washington, D.C. to London?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to London?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £508). Flying from Washington, D.C. to London in June is currently the most expensive (average of £953). 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.

See more FAQs

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Top 5 airlines flying from Washington, D.C. to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£234	Average£642	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£432	Average£706	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£453	Average£596	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
United Airlines	Cheapest£497	Average£774	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	Cheapest£599	Average£971	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to London?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Washington, D.C. to London.

Can Cheapflights find flights from Washington, D.C. to London with no change fees?

Certainly. Search results for flights to London from Washington, D.C. shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Washington, D.C. to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington, D.C. today and book when prices fit your budget.

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Cheap flights from Washington, D.C. to London from £216

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to LondonExplore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from Washington, D.C. to LondonDiscover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Direct flights from Washington, D.C. to LondonExplore direct flight options from Washington, D.C. to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 October 2026.

Explore direct flight options from Washington, D.C. to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 October 2026.

Last-minute flights from Washington, D.C. to LondonDiscover last-minute flight deals from Washington, D.C. to London. Data last updated 20 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to London. Data last updated 20 October 2026 and is based on user searches.

One-way flights from Washington, D.C. to LondonSearch for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Search for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Find flight deals from Washington, D.C. to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from Washington, D.C. to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 October 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to London as you normally would.

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

Airfare is below average for this route at the moment.

Washington, D.C. to London flights typically cost between £535 and £764 in December.The cheapest return price found within the last 5 days was £503 on Scandinavian Airlines (5 Dec–7 Dec).

What’s the top stopover airport for flights from Washington, D.C. to London?

Share of one-stop return flights from Washington, D.C. to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dublin (DUB) – chosen by Cheapflights users on 48% of one-stop itineraries from Washington, D.C. to London on Cheapflights.

What’s the cheapest stopover airport for flights from Washington, D.C. to London?

Average return fare for one-stop flights from Washington, D.C. to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £551.

What’s the fastest stopover option from Washington, D.C. to London?

Shortest average travel time for one-stop one-way flights from Washington, D.C. to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via New York (JFK) have the shortest average one-way travel time for one-stop routes: 9h 00m.

Which airport typically offers the quickest stopover for flights from Washington, D.C. to London?

Average stopover duration for one-stop one-way flights from Washington, D.C. to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 15m.

How often are flights from Washington, D.C. to London delayed?

About 17% of weekly flights between Washington, D.C. and London have experienced delays in the past year, with the average delay time being 173 minutes.

What is the most punctual flight time for Washington, D.C. to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to London flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 13% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. to London?

The best time to book flights from Washington, D.C. to London is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing London

Read reviews from past customers who have flown with KLM,Virgin Atlantic, andUnited Airlines from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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Alternative routes for Washington, D.C. to London

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Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

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Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

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One-way flights from Washington, D.C. to London
Search for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Washington, D.C. to London flights typically cost between £535 and £764 in December.
The cheapest return price found within the last 5 days was £503 on Scandinavian Airlines (5 Dec–7 Dec).