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

For as low as £483, TAP AIR PORTUGAL can have you in Washington, D.C. from London in 11h 30m. The distance from London to Washington, D.C. is about 3683 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

According to our current data, Icelandair (£286), Virgin Atlantic (£305), and TAP AIR PORTUGAL (£342) offers the cheapest pricing from London to Washington, D.C.. Users have found that Icelandair is 45% cheaper than the other options available to this destination.

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

For one-way options, check prices for British Airways. According to our data, you can fly for as low as £334. Users have also found prices from £351 and £360 on JetBlue and Finnair, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

What are the most popular routes from London to Washington, D.C.?

When deciding which route to take from London to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl as they are the most popular.

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

While on average a flight from London to Washington, D.C. is generally £992, our data shows the cheapest flight currently is £365. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £263 for that flight.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: Air Canada (75%), Austrian Airlines (75%), Copa Airlines (75%).

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

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

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

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

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

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

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

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

£389+ Cheap Flights from London to Washington, D.C.

Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or January, booked 64 days in advance, depart on a Friday or Wednesday and return on a Tuesday

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

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Fri 25/1212:15 -

1 stop11h 15m

Sat 30/119:40 -

1 stop10h 10m

Deal found 7/11£405

Wed 16/1216:20 -

Nonstop8h 55m

Fri 23/406:00 -

1 stop10h 25m

Deal found 7/11£406

Tue 1/1220:35 -

1 stop26h 55m

Thu 10/1219:40 -

1 stop18h 50m

Deal found 9/11£406

Sun 13/1220:35 -

1 stop26h 55m

Tue 5/119:40 -

1 stop18h 50m

Deal found 6/11£409

Thu 3/1212:00 -

1 stop14h 57m

Tue 8/1213:25 -

1 stop14h 45m

Deal found 5/11£409

Sun 13/1220:35 -

1 stop26h 55m

Fri 8/119:40 -

1 stop18h 50m

Deal found 5/11£410

Wed 11/1118:30 -

1 stop25h 45m

Mon 11/117:25 -

1 stop23h 10m

Deal found 8/11£411

Thu 12/1106:00 -

1 stop14h 15m

Mon 16/1117:25 -

1 stop23h 10m

Deal found 5/11£412

Thu 10/1212:15 -

1 stop11h 15m

Wed 6/119:40 -

1 stop10h 10m

Deal found 6/11£412

Wed 18/1118:30 -

1 stop25h 45m

Tue 1/1217:25 -

1 stop24h 15m

Deal found 9/11£414

Wed 18/1116:35 -

1 stop27h 40m

Sun 29/1122:30 -

1 stop12h 15m

Deal found 6/11£416

Thu 3/1212:15 -

1 stop11h 15m

Sun 13/1219:40 -

1 stop10h 10m

Deal found 8/11£417

Best flights from London to Washington, D.C.
Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Mon 15/216:35 -

1 stop27h 05m

Tue 23/217:25 -

1 stop17h 20m

Deal found 8/11£433

Wed 31/315:40 -

1 stop32h 40m

Wed 7/420:30 -

1 stop13h 10m

Deal found 5/11£439

Sun 21/210:00 -

1 stop11h 30m

Thu 25/212:50 -

2 stops15h 10m

Deal found 8/11£483

Mon 19/409:50 -

1 stop10h 55m

Tue 4/522:25 -

Nonstop7h 25m

Deal found 5/11£486

Mon 15/210:00 -

1 stop10h 55m

Tue 23/210:45 -

2 stops16h 10m

Deal found 7/11£492

Wed 16/1213:45 -

1 stop32h 15m

Wed 6/117:28 -

2 stops17h 52m

Deal found 7/11£512

Wed 31/310:05 -

1 stop10h 25m

Thu 8/417:25 -

1 stop9h 30m

Deal found 9/11£543

Sat 26/1208:40 -

1 stop12h 15m

Sun 10/118:40 -

1 stop10h 50m

Deal found 5/11£545

Thu 4/217:20 -

1 stop31h 05m

Thu 18/213:30 -

1 stop21h 50m

Deal found 9/11£723

Mon 1/316:35 -

1 stop27h 05m

Thu 29/416:40 -

2 stops22h 45m

Deal found 5/11£483

Sun 24/110:10 -

1 stop11h 58m

Thu 18/211:10 -

1 stop14h 10m

Deal found 9/11£492

Sun 31/119:40 -

1 stop25h 05m

Sun 7/217:15 -

1 stop12h 10m

Deal found 7/11£494

Sat 13/210:00 -

1 stop10h 55m

Sun 14/217:35 -

2 stops18h 00m

Deal found 7/11£501

Thu 24/1216:20 -

Nonstop8h 55m

Wed 3/217:25 -

1 stop14h 35m

Deal found 8/11£540

Thu 24/1208:40 -

1 stop12h 05m

Wed 30/1218:20 -

1 stop9h 30m

Deal found 10/11£553

Thu 4/210:00 -

2 stops16h 09m

Thu 18/217:37 -

2 stops17h 58m

Deal found 9/11£504

Wed 3/210:40 -

1 stop14h 50m

Sat 6/217:25 -

2 stops22h 15m

Deal found 5/11£514

Wed 3/215:50 -

1 stop11h 35m

Sat 6/214:00 -

1 stop11h 25m

Deal found 5/11£532

Tue 5/114:10 -

1 stop12h 49m

Wed 31/317:16 -

1 stop10h 14m

Deal found 8/11£534

Sat 12/1216:20 -

Nonstop8h 55m

Sun 18/422:10 -

Nonstop7h 30m

Deal found 9/11£547

Mon 14/1210:00 -

1 stop10h 55m

Thu 31/1218:15 -

1 stop9h 50m

Deal found 9/11£562

Mon 1/316:35 -

1 stop27h 05m

Tue 27/416:40 -

1 stop17h 55m

Deal found 5/11£527

Fri 11/1206:20 -

2 stops15h 11m

Tue 15/1219:40 -

1 stop11h 00m

Deal found 9/11£539

Tue 15/1211:40 -

1 stop12h 33m

Wed 6/106:00 -

1 stop11h 10m

Deal found 5/11£549

Mon 14/1207:30 -

2 stops18h 30m

Fri 11/622:10 -

2 stops30h 50m

Deal found 7/11£571

Wed 24/309:35 -

2 stops34h 40m

Fri 16/416:40 -

2 stops38h 20m

Deal found 6/11£528

Thu 10/1206:30 -

2 stops14h 53m

Thu 24/1213:50 -

1 stop11h 35m

Deal found 7/11£540

Mon 14/1210:35 -

1 stop11h 16m

Fri 11/606:00 -

1 stop10h 00m

Deal found 7/11£551

Thu 28/110:55 -

1 stop37h 30m

Mon 1/221:20 -

1 stop31h 35m

Deal found 7/11£744

Tue 30/321:15 -

3 stops26h 23m

Thu 8/409:50 -

2 stops19h 00m

Deal found 9/11£769

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

Round-trip from	£405
One-way from	£389
Popular in	June
Cheapest in	February
Average price	£503
Good round-trip deal	£534 or less
Good one-way deal	£426 or less

Icelandair
25/12-28/1
2 total stops
21h 25m total
London to Washington, D.C.

Search Deals

5/12-31/12
3 total stops
27h 15m total
London to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£38 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

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

Search Deals

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

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Mon 7/12

16:35-14:40

1 stop27h 05m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£390

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Sun 14/3

14:10-16:45

1 stop30h 35m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£399

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Sun 13/12

21:25-15:15

2 stops22h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£401

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Sun 21/3

22:05-19:30

3 stops25h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£410

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Sat 16/1

10:10-15:15

2 stops58h 05m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£413

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Wed 9/12

07:55-18:30

2 stops15h 35m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£425

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Thu 19/11

08:05-18:30

1 stop15h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£430

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Mon 15/2

16:35-14:40

1 stop27h 05m

Washington, D.C. Dulles Intl

Tue 23/2

17:25-15:45

1 stop17h 20m

£433

LondonWashington, D.C.

LGW London Gatwick - DCA Washington, D.C. Reagan-National

LGWDCA

London Gatwick

Sat 16/1

19:40-21:33

2 stops30h 53m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£435

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sun 24/1

11:25-10:52

2 stops28h 27m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£437

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 60 resultsSorted by cheapest first

...

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

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

LON-WAS

LHR-IAD

LHR-DCA

LGW-IAD

LCY-IAD

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 London to Washington, D.C.

LON-WAS

LHR-IAD

LHR-DCA

LGW-IAD

LCY-IAD

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

Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £473). Flying from London to Washington, D.C. in June is currently the most expensive (average of £579). 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 LON to WAS?

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

Weekly flight availability from London to Washington, D.C.

The most flights from LON to WAS are scheduled on a Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

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

Airfare is below average for this route at the moment.

London to Washington, D.C. flights typically cost between £430 and £573 in December.
The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–28 Jan).

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

Reykjavik (KEF) – chosen by Cheapflights users on 38% of one-stop itineraries from London to Washington, D.C. on Cheapflights.

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £344.

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 35m.

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

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 08m.

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

About 16% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 140 minutes.

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

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

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

Saturday 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 London to Washington, D.C. flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

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

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Check out reviews from past customers who have flown with Virgin Atlantic,United Airlines, andIcelandair from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Virgin Atlantic

7.5

Good

698 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

United Airlines

7.3

Good

10,471 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Icelandair

6.9

Okay

767 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Lufthansa

6.8

Okay

8,290 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

British Airways

6.7

Okay

8,286 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

How long is the flight from London to Washington, D.C.?
For as low as £483, TAP AIR PORTUGAL can have you in Washington, D.C. from London in 11h 30m. The distance from London to Washington, D.C. is about 3683 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to Washington, D.C. round-trip?
According to our current data, Icelandair (£286), Virgin Atlantic (£305), and TAP AIR PORTUGAL (£342) offers the cheapest pricing from London to Washington, D.C.. Users have found that Icelandair is 45% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from London to Washington, D.C. one-way?
For one-way options, check prices for British Airways. According to our data, you can fly for as low as £334. Users have also found prices from £351 and £360 on JetBlue and Finnair, respectively.
What are the most popular routes from London to Washington, D.C.?
When deciding which route to take from London to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl as they are the most popular.
What are the most reliable airlines from London to Washington, D.C.?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: Air Canada (75%), Austrian Airlines (75%), Copa Airlines (75%).
What are the cheapest flights from London to Washington, D.C.?
While on average a flight from London to Washington, D.C. is generally £992, our data shows the cheapest flight currently is £365. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £263 for that flight.
Can I find deals for flights from London to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on London to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington, D.C..
Can I find deals for business class flights from London to Washington, D.C.?
Yes. Cheapflights offers flight deals from London to Washington, D.C. 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 London to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £473). Flying from London to Washington, D.C. in June is currently the most expensive (average of £579). 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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Oxon Hill

Hanover

Woodbridge

Glen Burnie

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Washington, D.C. flight routes

Fly from London to Washington, D.C. on these airlines

British Airways flights from London to Washington, D.C.

Virgin Atlantic flights from London to Washington, D.C.

Finnair flights from London to Washington, D.C.

Top 10 airlines flying from London to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£270	Average£526	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£286	Average£488	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
TAP AIR PORTUGAL	Cheapest£342	Average£463	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
KLM	Cheapest£377	Average£579	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Aer Lingus	Cheapest£401	Average£591	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£408	Average£578	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Scandinavian Airlines	Cheapest£410	Average£518	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Lufthansa	Cheapest£412	Average£544	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£413	Average£566	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£417	Average£609	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

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How does Cheapflights help users find flights from London to Washington, D.C.?

When you search for this flight from London to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from London to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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Of course! You can now track prices for flights from London to Washington, D.C. and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London to Washington, D.C. from £389

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheapest flights from London to Washington, D.C.Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Best flights from London to Washington, D.C.Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from London to Washington, D.C.Explore direct flight options from London to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Explore direct flight options from London to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Last-minute flights from London to Washington, D.C.Discover last-minute flight deals from London to Washington, D.C.. Data last updated 10 November 2026 and is based on user searches.

Discover last-minute flight deals from London to Washington, D.C.. Data last updated 10 November 2026 and is based on user searches.

One-way flights from London to Washington, D.C.Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

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

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

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

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

Cheapflights Insights

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

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

Find hourly flight availability from London to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 November 2026.

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

Weekly flight availability from London to Washington, D.C.

The most flights from LON to WAS are scheduled on a Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

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

Airfare is below average for this route at the moment.

London to Washington, D.C. flights typically cost between £430 and £573 in December.The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–28 Jan).

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 38% of one-stop itineraries from London to Washington, D.C. on Cheapflights.

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

Average return fare for one-stop flights from London to Washington, D.C., 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 £344.

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 35m.

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

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

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 08m.

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

About 16% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 140 minutes.

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

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

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

Saturday 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 London to Washington, D.C. flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

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

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Check out reviews from past customers who have flown with Virgin Atlantic,United Airlines, andIcelandair from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

What are the most popular routes from London to Washington, D.C.?

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

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

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

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

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

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

Travelling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Washington, D.C. on these airlines

Choose from the following airlines for your flight from London to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 10 November 2026.

Alternative routes for London to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Best flights from London to Washington, D.C.
Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from London to Washington, D.C.
Explore direct flight options from London to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated 10 November 2026 and is based on user searches.

One-way flights from London to Washington, D.C.
Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

London to Washington, D.C. flights typically cost between £430 and £573 in December.
The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–28 Jan).