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

For as low as £430, United Airlines can have you in Washington, D.C. from London in 8h 25m. The distance from London to Washington, D.C. is about 3664 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 (£289), TAP AIR PORTUGAL (£346), and Aer Lingus (£406) 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 £318. Users have also found prices from £355 and £421 on JetBlue and Aer Lingus, 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 £1,423, our data shows the cheapest flight currently is £348. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £327 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 (78%), Austrian Airlines (78%), Copa Airlines (78%).

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.

£285+ 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 57 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 29 September 2026.

Thu 29/1006:50 -

2 stops17h 33m

Thu 5/1113:19 -

1 stop15h 01m

Deal found 28/9£411

Thu 15/1009:55 -

1 stop10h 40m

Sun 18/1022:05 -

Nonstop7h 35m

Deal found 28/9£412

Sat 31/1008:55 -

1 stop14h 37m

Thu 5/1112:27 -

1 stop14h 18m

Deal found 28/9£412

Thu 29/1006:50 -

2 stops17h 33m

Tue 10/1113:19 -

1 stop12h 51m

Deal found 29/9£413

Wed 7/1016:25 -

1 stop27h 45m

Fri 6/1122:30 -

1 stop12h 15m

Deal found 28/9£413

Sat 21/1106:50 -

2 stops13h 34m

Sat 28/1111:05 -

1 stop15h 05m

Deal found 28/9£413

Thu 15/1006:00 -

1 stop13h 00m

Sun 18/1018:35 -

Nonstop7h 20m

Deal found 28/9£413

Thu 12/1110:35 -

1 stop11h 44m

Thu 19/1114:58 -

1 stop9h 52m

Deal found 28/9£413

Sat 3/1006:50 -

1 stop11h 40m

Tue 6/1016:00 -

1 stop9h 35m

Deal found 26/9£414

Thu 22/1009:25 -

1 stop12h 20m

Thu 29/1021:10 -

1 stop16h 40m

Deal found 24/9£414

Sat 3/1006:50 -

2 stops15h 08m

Sat 17/1011:45 -

2 stops13h 45m

Deal found 25/9£414

Sat 3/1015:50 -

Nonstop8h 25m

Sun 11/1022:05 -

Nonstop7h 35m

Deal found 25/9£415

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 29 September 2026.

Sat 26/1211:05 -

1 stop32h 25m

Thu 14/118:20 -

Nonstop7h 20m

Deal found 28/9£418

Sat 21/1116:20 -

Nonstop8h 55m

Sun 29/1122:15 -

Nonstop7h 35m

Deal found 25/9£430

Fri 2/1016:00 -

Nonstop8h 25m

Thu 15/1022:05 -

Nonstop7h 35m

Deal found 25/9£430

Fri 30/1014:00 -

Nonstop8h 40m

Tue 10/1118:55 -

Nonstop7h 25m

Deal found 26/9£430

Wed 25/1118:40 -

1 stop25h 50m

Fri 4/1217:25 -

1 stop19h 25m

Deal found 28/9£432

Sun 8/1110:00 -

1 stop14h 50m

Sun 15/1108:05 -

2 stops19h 55m

Deal found 24/9£433

Sun 13/1211:40 -

1 stop12h 33m

Thu 7/117:19 -

1 stop9h 51m

Deal found 27/9£434

Thu 25/211:45 -

2 stops36h 13m

Mon 1/317:32 -

2 stops44h 28m

Deal found 28/9£464

Sun 13/1210:40 -

1 stop14h 55m

Thu 7/117:25 -

1 stop17h 25m

Deal found 27/9£490

Thu 22/1015:40 -

1 stop11h 35m

Mon 26/1020:40 -

1 stop10h 15m

Deal found 25/9£490

Wed 21/1012:40 -

2 stops14h 10m

Sun 25/1016:00 -

1 stop11h 10m

Deal found 28/9£551

Fri 16/1009:15 -

1 stop11h 50m

Wed 28/1019:00 -

1 stop10h 15m

Deal found 28/9£561

Thu 19/1107:05 -

3 stops20h 57m

Mon 23/1109:05 -

2 stops25h 55m

Deal found 28/9£591

Thu 29/1017:20 -

1 stop23h 25m

Wed 18/1113:30 -

1 stop21h 50m

Deal found 26/9£738

Thu 15/1012:15 -

Nonstop8h 15m

Sat 24/1019:20 -

Nonstop7h 20m

Deal found 27/9£430

Thu 15/1016:40 -

Nonstop8h 40m

Fri 23/1022:05 -

Nonstop7h 35m

Deal found 25/9£430

Mon 2/1113:20 -

Nonstop8h 40m

Mon 9/1118:55 -

Nonstop7h 25m

Deal found 24/9£432

Wed 25/1113:10 -

1 stop12h 34m

Fri 4/1214:50 -

1 stop10h 25m

Deal found 28/9£435

Thu 29/1008:55 -

1 stop13h 32m

Tue 10/1114:00 -

1 stop11h 25m

Deal found 24/9£435

Mon 23/1108:40 -

1 stop12h 15m

Fri 27/1119:30 -

Nonstop7h 25m

Deal found 28/9£447

Sun 13/1212:05 -

Nonstop8h 35m

Thu 7/122:15 -

Nonstop7h 35m

Deal found 28/9£430

Wed 14/1010:25 -

1 stop14h 10m

Tue 3/1118:40 -

1 stop16h 05m

Deal found 26/9£432

Mon 2/1113:10 -

1 stop11h 05m

Sun 15/1117:14 -

1 stop10h 21m

Deal found 27/9£435

Sun 28/210:00 -

2 stops18h 02m

Sun 7/318:40 -

1 stop16h 05m

Deal found 27/9£444

Thu 15/1009:15 -

1 stop12h 30m

Sun 18/1020:20 -

1 stop11h 15m

Deal found 28/9£500

Tue 24/1121:20 -

2 stops28h 10m

Fri 4/1222:30 -

1 stop12h 15m

Deal found 27/9£502

Tue 24/1107:45 -

1 stop13h 00m

Tue 1/1217:15 -

1 stop12h 20m

Deal found 24/9£461

Wed 23/1211:55 -

1 stop11h 45m

Mon 28/1219:40 -

1 stop10h 15m

Deal found 26/9£518

Wed 21/1014:10 -

1 stop26h 59m

Sun 25/1007:00 -

1 stop10h 20m

Deal found 24/9£430

Thu 22/1010:25 -

1 stop14h 10m

Mon 26/1019:40 -

1 stop16h 05m

Deal found 28/9£433

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

Round-trip from	£411
One-way from	£285
Popular in	June
Cheapest in	February
Average price	£503
Good round-trip deal	£479 or less
Good one-way deal	£426 or less

Air Canada
29/10-5/11
3 total stops
32h 34m total
London to Washington, D.C.

Search Deals

Icelandair
21/3-31/12
1 total stop
27h 05m total
London to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 8% 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 September 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

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sun 28/2

20:35-18:40

1 stop27h 05m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£314

LondonBaltimore

LGW London Gatwick - BWI Baltimore/Washington

LGWBWI

London Gatwick

Thu 7/1

11:00-00:44

1 stop18h 44m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£347

LondonBaltimore

LGW London Gatwick - BWI Baltimore/Washington

LGWBWI

London Gatwick

Tue 27/10

10:10-18:12

1 stop36h 02m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£356

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Mon 28/12

11:45-11:15

2 stops28h 30m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£358

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 21/11

06:20-16:49

2 stops15h 29m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£362

LondonBaltimore

LGW London Gatwick - BWI Baltimore/Washington

LGWBWI

London Gatwick

Sat 21/11

10:00-20:52

2 stops15h 52m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£362

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Thu 4/3

10:00-22:55

2 stops17h 55m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£366

LondonWashington, D.C.

LHR London Heathrow - IAD Washington, D.C. Dulles Intl

LHRIAD

London Heathrow

Mon 23/11

16:25-19:55

Nonstop8h 30m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£367

LondonWashington, D.C.

LHR London Heathrow - IAD Washington, D.C. Dulles Intl

LHRIAD

London Heathrow

Tue 2/3

12:15-15:40

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£367

LondonWashington, D.C.

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

LTNIAD

London Luton

Thu 8/10

07:00-15:45

3 stops37h 45m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£367

Flights are sorted by cheapest return flights first.

Deals found on 25/9

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

LGW-DCA

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

LGW-DCA

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 £485). Flying from London to Washington, D.C. in June is currently the most expensive (average of £584). 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 Wednesday (29 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 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 £452 and £597 in October.
The cheapest return price found within the last 5 days was £411 on Multiple Airlines (29 Oct–5 Nov).

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

Reykjavik (KEF) – chosen by Cheapflights users on 37% 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.?

Philadelphia (PHL) is the most affordable one-stop option, with an average return flight price of £419.

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 New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 10m.

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 81 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 United Airlines,Virgin Atlantic, 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.

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,251 reviews

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Virgin Atlantic

7.4

Good

694 reviews

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Icelandair

6.9

Okay

754 reviews

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Lufthansa

6.8

Okay

8,248 reviews

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

British Airways

6.7

Okay

8,239 reviews

United Airlines

7.4

Good

10,251 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

How long is the flight from London to Washington, D.C.?
For as low as £430, United Airlines can have you in Washington, D.C. from London in 8h 25m. The distance from London to Washington, D.C. is about 3664 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 (£289), TAP AIR PORTUGAL (£346), and Aer Lingus (£406) 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 £318. Users have also found prices from £355 and £421 on JetBlue and Aer Lingus, 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 (78%), Austrian Airlines (78%), Copa Airlines (78%).
What are the cheapest flights from London to Washington, D.C.?
While on average a flight from London to Washington, D.C. is generally £1,423, our data shows the cheapest flight currently is £348. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £327 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 £485). Flying from London to Washington, D.C. in June is currently the most expensive (average of £584). 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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Alexandria

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Oxon Hill

Hanover

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Glen Burnie

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Washington, D.C. flight routes

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

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

British Airways 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
Icelandair	Cheapest£289	Average£480	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£332	Average£530	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
TAP AIR PORTUGAL	Cheapest£346	Average£456	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
KLM	Cheapest£385	Average£579	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Aer Lingus	Cheapest£406	Average£607	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£412	Average£582	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air France	Cheapest£413	Average£637	FlexibilityNo cancel fee	On-time77%	Search Air France flights
British Airways	Cheapest£413	Average£567	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Scandinavian Airlines	Cheapest£415	Average£488	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Lufthansa	Cheapest£416	Average£548	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

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 £285

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/3. 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 29 September 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 29 September 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 29 September 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 29 September 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 29 September 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 29 September 2026.

Last-minute flights from London to Washington, D.C.Discover last-minute flight deals from London to Washington, D.C.. Data last updated 29 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Washington, D.C.. Data last updated 29 September 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 29 September 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 29 September 2026.

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

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Cheapflights Fare Finder

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 29 September 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 Wednesday (29 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 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 £452 and £597 in October.The cheapest return price found within the last 5 days was £411 on Multiple Airlines (29 Oct–5 Nov).

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 37% 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.

Philadelphia (PHL) is the most affordable one-stop option, with an average return flight price of £419.

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 New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 10m.

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 81 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 United Airlines,Virgin Atlantic, 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 29 September 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 29 September 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 29 September 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 29 September 2026.

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated 29 September 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 29 September 2026.

London to Washington, D.C. flights typically cost between £452 and £597 in October.
The cheapest return price found within the last 5 days was £411 on Multiple Airlines (29 Oct–5 Nov).