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

For as low as $565, Icelandair can have you in Washington, D.C. from London in 11h. The distance from London to Washington, D.C. is about 3641 mi. This flight may include one or multiple stops.

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

Flying on Delta is currently your cheapest option to Washington, D.C., with prices starting at $320. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Austrian Airlines, with the lowest prices starting at $390 and $431, respectively. These flights start at 56% lower than the current average price 3 months from now.

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

One-way options have recently been found by users for as low as $461 on WorldTicket. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $541 and Icelandair from $553 one-way.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

While some choose either London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to Washington, D.C..

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

Looking at all options, your cheapest flight can be booked for $560. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $488 on average our data indicates $3,086 when flying from London to Washington, D.C..

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

Before booking your flight to Washington, D.C. from London, check out the most reliable airlines to get you to your destination on time: KLM (75%), Air France (75%), Delta( 75%).

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

When booking a flight from London to Washington, D.C., you may want to consider flying on American Airlines, Air Canada or British Airways as they are the most popular for this route.

What is the cheapest day to fly round-trip from London to Washington, D.C.?

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Find a great deal and save up to 44% by booking at least 51 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Washington, D.C. within the next two weeks, with the cheapest ticket starting at $729.

What is the cheapest month to fly from London to Washington, D.C.?

February is one of the best times of the year to fly to Washington, D.C. from London. Prices for February average $733 per person but you can even find prices for as low as $305. The most expensive prices can be found in the month of July. Opting for a February flight can save you 19% on your journey compared to booking in July

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 vacation 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.

$455+ Cheap Flights from London to Washington, D.C.

Q: How much does it cost to fly round-trip 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 $601 and $933 in September. The cheapest round-trip price found within the last 3 days was $564 on Multiple Airlines (Sep 4-Sep 7).

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or November, booked 84 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

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

Round-trip from	$564 (Kiwi.com)
One-way from	$455 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$818
Good round-trip deal	$740 or less
Good one-way deal	$665 or less

From London (LON) to Washington, D.C. (WAS)

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One-way flight from London (LON) to Washington, D.C. (WAS)

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Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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

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

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Find 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 August 21, 2025.

Thu 9/410:55 pmSTN - BWI

2 stops23h 45mMultiple Airlines

Sun 9/76:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/19

$564

Tue 9/233:40 pmLGW - BWI

1 stop32h 45mIcelandair

Tue 9/308:30 pmBWI - LGW

1 stop13h 10mIcelandair

Deal found 8/20

$564

Mon 9/2211:40 amSTN - BWI

1 stop11h 00mPLAY

Fri 9/266:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/21

$565

Thu 9/251:05 pmLHR - BWI

1 stop11h 20mIcelandair

Wed 10/18:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/19

$565

Thu 9/2511:15 amLGW - BWI

2 stops35h 25mMultiple Airlines

Wed 10/11:17 pmBWI - LGW

1 stop15h 43mMultiple Airlines

Deal found 8/20

$565

Thu 8/2811:40 amSTN - BWI

1 stop11h 00mPLAY

Tue 9/26:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/20

$566

Wed 9/101:05 pmLHR - BWI

1 stop11h 20mIcelandair

Sat 9/138:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/21

$566

Fri 9/58:00 amLGW - BWI

2 stops14h 40mMultiple Airlines

Mon 9/86:50 pmBWI - LGW

2 stops21h 10mMultiple Airlines

Deal found 8/19

$566

Thu 9/258:15 amSTN - BWI

2 stops14h 25mMultiple Airlines

Wed 10/16:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/20

$567

Thu 11/1311:55 amLGW - BWI

1 stop11h 45mIcelandair

Mon 11/247:40 pmBWI - LGW

1 stop10h 15mIcelandair

Deal found 8/21

$567

Fri 8/292:00 pmLGW - BWI

1 stop26h 44mMultiple Airlines

Tue 10/72:09 pmBWI - LGW

2 stops35h 11mMultiple Airlines

Deal found 8/21

$568

Thu 9/49:25 pmLHR - BWI

1 stop27h 00mIcelandair

Tue 9/98:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/21

$569

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 layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2025.

Wed 10/86:45 pmSTN - BWI

2 stops27h 55mMultiple Airlines

Sat 10/116:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/20

$564

Tue 9/233:40 pmLGW - BWI

1 stop32h 45mIcelandair

Tue 9/308:30 pmBWI - LGW

1 stop13h 10mIcelandair

Deal found 8/20

$564

Mon 9/2211:40 amSTN - BWI

1 stop11h 00mPLAY

Fri 9/266:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/21

$565

Mon 9/227:50 pmLHR - IAD

2 stops29h 09mScandinavian Airlines

Mon 9/2910:05 pmIAD - LHR

2 stops18h 30mScandinavian Airlines

Deal found 8/20

$586

Sat 9/2012:10 pmLGW - DCA

1 stop13h 45mJetBlue

Mon 9/224:45 pmDCA - LGW

1 stop11h 50mJetBlue

Deal found 8/20

$586

Mon 9/224:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Mon 9/2910:20 pmIAD - LGW

1 stop30h 25mTAP AIR PORTUGAL

Deal found 8/20

$587

Wed 2/48:40 amLHR - DCA

2 stops19h 16mVirgin Atlantic

Sat 2/76:05 amDCA - LHR

1 stop9h 05mVirgin Atlantic

Deal found 8/21

$601

Thu 10/29:25 amLCY - IAD

1 stop11h 50mSWISS

Wed 10/88:45 pmIAD - LCY

1 stop15h 30mSWISS

Deal found 8/21

$647

Thu 9/410:55 pmSTN - BWI

2 stops23h 45mMultiple Airlines

Sun 9/76:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/19

$564

Tue 11/2511:55 amLGW - BWI

1 stop11h 45mIcelandair

Sun 11/307:40 pmBWI - LGW

1 stop10h 15mIcelandair

Deal found 8/21

$566

Mon 9/1511:40 amSTN - BWI

1 stop11h 00mPLAY

Mon 9/226:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/20

$567

Tue 9/168:15 amLHR - DCA

1 stop16h 07mJetBlue

Sat 9/207:00 pmDCA - LHR

1 stop30h 30mJetBlue

Deal found 8/21

$586

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated August 21, 2025 and is based on user searches.

Thu 8/2811:40 amSTN - BWI

1 stop11h 00mPLAY

Tue 9/26:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/20

$566

Fri 8/292:00 pmLGW - BWI

1 stop26h 44mMultiple Airlines

Tue 10/72:09 pmBWI - LGW

2 stops35h 11mMultiple Airlines

Deal found 8/21

$568

Thu 9/410:55 pmSTN - BWI

2 stops23h 45mMultiple Airlines

Sun 9/76:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/19

$564

Thu 9/49:25 pmLHR - BWI

1 stop27h 00mIcelandair

Tue 9/98:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/21

$569

Thu 9/41:00 pmLGW - BWI

1 stop11h 25mIcelandair

Mon 9/88:30 pmBWI - LGW

1 stop10h 15mIcelandair

Deal found 8/19

$569

Fri 9/58:00 amLGW - BWI

2 stops14h 40mMultiple Airlines

Mon 9/86:50 pmBWI - LGW

2 stops21h 10mMultiple Airlines

Deal found 8/19

$566

Wed 9/101:05 pmLHR - BWI

1 stop11h 20mIcelandair

Sat 9/138:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/21

$566

Mon 9/2211:40 amSTN - BWI

1 stop11h 00mPLAY

Fri 9/266:50 pmBWI - STN

1 stop10h 50mPLAY

Deal found 8/21

$565

Tue 9/233:40 pmLGW - BWI

1 stop32h 45mIcelandair

Tue 9/308:30 pmBWI - LGW

1 stop13h 10mIcelandair

Deal found 8/20

$564

Thu 9/251:05 pmLHR - BWI

1 stop11h 20mIcelandair

Wed 10/18:30 pmBWI - LHR

1 stop10h 25mIcelandair

Deal found 8/19

$565

Thu 9/2511:15 amLGW - BWI

2 stops35h 25mMultiple Airlines

Wed 10/11:17 pmBWI - LGW

1 stop15h 43mMultiple Airlines

Deal found 8/20

$565

Thu 9/258:15 amSTN - BWI

2 stops14h 25mMultiple Airlines

Wed 10/16:50 pmBWI - STN

1 stop10h 50mMultiple Airlines

Deal found 8/20

$567

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 August 21, 2025.

Wed 10/810:10 pmSTN - BWI

3 stops24h 30mMultiple Airlines

Deal found 8/19

$455

Fri 9/197:40 amLHR - BWI

2 stops15h 00mMultiple Airlines

Deal found 8/20

$455

Fri 10/105:45 pmLGW - BWI

2 stops28h 55mMultiple Airlines

Deal found 8/19

$455

Wed 10/17:05 amSTN - BWI

2 stops15h 35mMultiple Airlines

Deal found 8/19

$456

Wed 9/101:45 pmLHR - BWI

3 stops32h 01mMultiple Airlines

Deal found 8/19

$457

Tue 9/29:45 pmLGW - BWI

3 stops52h 29mMultiple Airlines

Deal found 8/20

$457

Fri 8/299:40 pmSTN - BWI

2 stops25h 00mMultiple Airlines

Deal found 8/21

$458

Mon 10/66:40 amLHR - BWI

2 stops16h 00mMultiple Airlines

Deal found 8/19

$458

Mon 9/110:00 pmSTN - BWI

3 stops48h 40mMultiple Airlines

Deal found 8/20

$459

Mon 9/88:50 pmLHR - BWI

3 stops25h 50mMultiple Airlines

Deal found 8/19

$460

Sat 9/2011:40 amSTN - BWI

1 stop11h 00mWorldTicket

Deal found 8/21

$461

Wed 8/279:30 pmSTN - BWI

3 stops25h 10mMultiple Airlines

Deal found 8/21

$463

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

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Wed 10/8

6:45 pm-5:40 pm

2 stops27h 55m

Baltimore/Washington

Sat 10/11

6:50 pm-10:40 am

1 stop10h 50m

$564

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 9/23

3:40 pm-7:25 pm

1 stop32h 45m

Baltimore/Washington

Tue 9/30

8:30 pm-2:40 pm

1 stop13h 10m

$564

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 9/4

10:55 pm-5:40 pm

2 stops23h 45m

Baltimore/Washington

Sun 9/7

6:50 pm-10:40 am

1 stop10h 50m

$564

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Mon 9/22

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Fri 9/26

6:50 pm-10:40 am

1 stop10h 50m

$565

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Sat 10/4

6:35 am-5:40 pm

2 stops16h 05m

Baltimore/Washington

Mon 10/6

6:50 pm-10:40 am

1 stop10h 50m

$565

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 9/25

11:15 am-5:40 pm

2 stops35h 25m

Baltimore/Washington

Wed 10/1

1:17 pm-10:00 am

1 stop15h 43m

$565

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 11/25

11:55 am-6:40 pm

1 stop11h 45m

Baltimore/Washington

Sun 11/30

7:40 pm-10:55 am

1 stop10h 15m

$566

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Mon 12/1

11:55 am-6:40 pm

1 stop11h 45m

Baltimore/Washington

Mon 12/8

7:40 pm-10:55 am

1 stop10h 15m

$566

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 2/6

11:55 am-6:40 pm

1 stop11h 45m

Baltimore/Washington

Tue 2/10

7:40 pm-10:55 am

1 stop10h 15m

$566

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 9/5

8:00 am-5:40 pm

2 stops14h 40m

Baltimore/Washington

Mon 9/8

6:50 pm-9:00 pm

2 stops21h 10m

$566

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 60 results

...

The best insider tips for London to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your London to Washington, D.C. trip

Airlines

British Airways

BA's Club Suite offers private pods with doors for enhanced privacy on long-haul flights.

BA's World Traveller Plus provides extra seat width, legroom, and upgraded service on long-haul flights.

Read more about British Airwaysby Gabriel Leigh

United Airlines

United's Polaris Business Class features lie-flat seats, large screens, and Saks Fifth Avenue bedding.

United's Premium Plus offers bigger seats, extra legroom, and upgraded meals on international flights.

Read more about United Airlinesby Harriet Baskas

Airports

LHR

Heathrow's strict security can cause delays. Ensure all liquids are in a single bag and remove suspicious items to avoid long waits.

IAD

Use the Silver Line Metro for a cost-effective trip to Washington, D.C. It takes under 40 minutes and is five minutes from the terminal.

Our travel experts

Gabriel Leigh

Expert on British Airways

Harriet Baskas

Expert on United Airlines

Ramsey Qubein

Expert on LHR and IAD

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.

Estimated round-trip 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.

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

To ensure you get the cheapest price possible for a flight from London to Washington, D.C., you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, July is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $303). Flying from London to Washington, D.C. in April is currently the most expensive (average of $337). 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?

A simple way to save on the total cost of your ticket is to fly from London to Washington, D.C. in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from London to Washington, D.C.?

Travelers seeking maximum savings on their London to Washington, D.C. flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

The most flights from LON to WAS are scheduled on a Wednesday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from London to Washington, D.C.?

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

Reykjavik (KEF) – chosen by Cheapflights users on 50% of 1-stop itineraries from London to Washington, D.C. on Cheapflights.

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

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $478.

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

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 11h 00m.

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 20m.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from London to Washington, D.C., such as Delta, United Airlines, and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

United Airlines

7.4

Good

8,930 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Virgin Atlantic

7.4

Good

658 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

PLAY

7.0

Good

103 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

British Airways

6.7

Okay

7,291 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

How long is the flight from London to Washington, D.C.?
For as low as $565, Icelandair can have you in Washington, D.C. from London in 11h. The distance from London to Washington, D.C. is about 3641 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Washington, D.C. round-trip?
Flying on Delta is currently your cheapest option to Washington, D.C., with prices starting at $320. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Austrian Airlines, with the lowest prices starting at $390 and $431, respectively. These flights start at 56% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $461 on WorldTicket. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $541 and Icelandair from $553 one-way.
What are the most popular routes from London to Washington, D.C.?
While some choose either London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to Washington, D.C..
What are the most reliable airlines from London to Washington, D.C.?
Before booking your flight to Washington, D.C. from London, check out the most reliable airlines to get you to your destination on time: KLM (75%), Air France (75%), Delta( 75%).
What are the cheapest flights from London to Washington, D.C.?
Looking at all options, your cheapest flight can be booked for $560. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $488 on average our data indicates $3,086 when flying from London to Washington, D.C..
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 vacation 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, July is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $303). Flying from London to Washington, D.C. in April is currently the most expensive (average of $337). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Springfield

Fredericksburg

Gaithersburg

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Laurel

Rockville

Oxon Hill

National Harbor

Dundalk

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Washington, D.C.

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

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$304	Average$444	FlexibilityNo cancel fee	On-timeN/A
Delta	Cheapest$320	Average$949	FlexibilityNo cancel fee	On-timeN/A
Scandinavian Airlines	Cheapest$390	Average$833	FlexibilityNo cancel fee	On-time77%
Austrian Airlines	Cheapest$431	Average$984	FlexibilityNo cancel fee	On-time78%
TAP AIR PORTUGAL	Cheapest$476	Average$716	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$510	Average$948	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$595	Average$854	FlexibilityNo cancel fee	On-time70%
American Airlines	Cheapest$619	Average$753	FlexibilityNo cancel fee	On-time71%
Air Canada	Cheapest$635	Average$663	FlexibilityNo cancel fee	On-time67%
Aer Lingus	Cheapest$652	Average$802	FlexibilityNo cancel fee	On-timeN/A

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$455+ Cheap flights from London (LON) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or November, booked 84 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

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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 August 21, 2025.

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 August 21, 2025.

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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.

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Everything you need to know about your flight from London to Washington, D.C.

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

Use this chart to determine the optimal time to book a round-trip flight from London to Washington, D.C.. Price data was last updated on August 8, 2025.

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 August 21, 2025.

What is the cheapest day to fly from London to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from London to Washington, D.C.. Price data was last updated on December 16, 2024.

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

How much does it cost to fly round-trip from London to Washington, D.C.?

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

Share of 1-stop round-trip flights from London to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

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

Average round-trip fare for 1-stop flights from London to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

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

Shortest average travel time for 1-stop one-way flights from London to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

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

Average layover duration for 1-stop one-way flights from London to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from London to Washington, D.C., such as Delta, United Airlines, and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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Alternative routes for London to Washington, D.C.

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

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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 August 21, 2025.