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

There are many flights that can get you from Washington, D.C. to London Heathrow Airport in 14h 55m. Fly via Scandinavian Airlines, Icelandair, or JetBlue to get the fastest option. The distance between Washington, D.C. and London Heathrow Airport is about 3664 mi. This flight may include one or multiple stops.

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

Flying on TAP AIR PORTUGAL is currently your cheapest option to London Heathrow Airport, with prices starting at $424. Additional round-trip tickets that might be worth considering are offered by Virgin Atlantic and Delta, with the lowest prices starting at $432 and $450, respectively. TAP AIR PORTUGAL is currently priced 54% below the average price you’ll pay for this route.

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

One-way options have recently been found by users for as low as $229 on KLM. Other airlines that offer cheap prices include Icelandair from $273 and JetBlue from $300 one-way.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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

The most popular flight routes from Washington, D.C. to London Heathrow Airport are Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow and Washington, D.C. Reagan-National - London Heathrow.

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

Looking at all options, your cheapest flight can be booked for $334. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $599 on average, our data indicates $1,576 when flying from Washington, D.C. to London Heathrow Airport.

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

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 Washington, D.C. to London Heathrow Airport on time: Iberia (87%), Aer Lingus (81%), KLM (78%).

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

Consider British Airways, United Airlines or American Airlines when booking your flight. These represent the most popular airlines when flying from Washington, D.C. to London Heathrow Airport.

Most accurate provider : When it comes to deals on Washington, D.C.-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

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

$275+ Cheap Flights from Washington, D.C. to London Heathrow Airport

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Cheapflights Tip: The best prices from Washington, D.C. to London Heathrow are usually found in February or January, booked 86 days in advance, depart on a Wednesday or Monday and return on a Wednesday

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

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to Heathrow
Explore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Sat 12/58:30 pm -

2 stops19h 50m

Mon 12/76:40 am -

1 stop15h 35m

Deal found 10/19

$670

Mon 11/309:55 am -

3 stops29h 10m

Mon 12/76:30 pm -

3 stops30h 53m

Deal found 10/22

$673

Sat 11/285:25 pm -

1 stop13h 00m

Tue 12/86:00 am -

1 stop13h 40m

Deal found 10/22

$675

Wed 12/911:05 am -

3 stops28h 00m

Sat 12/127:55 pm -

3 stops31h 04m

Deal found 10/22

$681

Wed 12/99:05 am -

3 stops30h 00m

Sat 12/127:55 pm -

3 stops29h 28m

Deal found 10/22

$681

Mon 11/167:40 pm -

1 stop10h 10m

Wed 11/2512:15 pm -

1 stop11h 15m

Deal found 10/18

$683

Tue 12/17:40 pm -

2 stops16h 10m

Wed 12/98:50 am -

2 stops14h 40m

Deal found 10/18

$685

Mon 11/167:40 pm -

1 stop10h 10m

Mon 11/2312:15 pm -

1 stop11h 15m

Deal found 10/18

$688

Wed 12/211:05 am -

3 stops25h 25m

Mon 12/76:30 pm -

3 stops32h 29m

Deal found 10/22

$693

Tue 11/175:25 pm -

1 stop14h 15m

Wed 11/258:15 am -

1 stop17h 15m

Deal found 10/18

$693

Wed 11/410:30 pm -

1 stop12h 00m

Fri 11/2012:25 pm -

1 stop13h 05m

Deal found 10/20

$695

Wed 12/211:05 am -

3 stops25h 25m

Sat 12/57:55 pm -

3 stops31h 04m

Deal found 10/22

$696

Best flights from Washington, D.C. to Heathrow
Discover carefully curated flight deals from Washington, D.C. to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Thu 1/218:30 pm -

2 stops14h 55m

Tue 1/265:30 pm -

2 stops26h 45m

Deal found 10/21

$757

Fri 11/67:40 pm -

1 stop18h 50m

Mon 11/98:35 pm -

1 stop27h 05m

Deal found 10/21

$828

Tue 12/19:59 am -

1 stop15h 56m

Fri 12/119:20 am -

1 stop11h 31m

Deal found 10/18

$832

Tue 11/176:20 pm -

Nonstop7h 20m

Mon 11/2312:05 pm -

1 stop33h 55m

Deal found 10/20

$872

Thu 3/1112:15 pm -

2 stops14h 30m

Wed 3/1710:00 am -

2 stops16h 55m

Deal found 10/19

$935

Wed 1/136:55 pm -

Nonstop7h 25m

Sun 1/176:30 am -

1 stop14h 10m

Deal found 10/20

$935

Fri 2/196:55 pm -

Nonstop7h 10m

Tue 2/231:50 pm -

Nonstop8h 15m

Deal found 10/18

$942

Fri 3/1210:00 am -

2 stops16h 45m

Mon 3/226:30 am -

2 stops16h 50m

Deal found 10/18

$979

Wed 1/134:15 pm -

2 stops13h 35m

Tue 1/1912:15 pm -

1 stop11h 25m

Deal found 10/20

$1,013

Mon 11/168:30 pm -

2 stops14h 55m

Fri 11/207:50 pm -

2 stops28h 00m

Deal found 10/19

$770

Mon 11/98:55 am -

1 stop17h 00m

Tue 11/179:20 am -

1 stop11h 35m

Deal found 10/22

$834

Sun 3/218:40 pm -

1 stop10h 10m

Mon 3/299:25 pm -

1 stop29h 50m

Deal found 10/19

$876

Mon 11/306:20 pm -

Nonstop7h 20m

Tue 12/89:00 am -

1 stop13h 00m

Deal found 10/22

$877

Mon 11/168:30 pm -

2 stops14h 55m

Wed 12/26:05 pm -

2 stops28h 10m

Deal found 10/21

$804

Sat 11/712:00 pm -

1 stop13h 55m

Wed 11/1812:20 pm -

1 stop14h 55m

Deal found 10/22

$852

Mon 3/227:55 pm -

Nonstop7h 10m

Mon 4/261:30 pm -

Nonstop8h 15m

Deal found 10/22

$948

Mon 3/82:10 pm -

1 stop12h 40m

Sat 3/1310:10 am -

2 stops17h 45m

Deal found 10/20

$963

Thu 12/38:30 pm -

2 stops19h 50m

Fri 12/117:30 pm -

1 stop28h 20m

Deal found 10/21

$811

Wed 1/134:15 pm -

2 stops13h 35m

Mon 1/188:35 pm -

1 stop27h 05m

Deal found 10/19

$1,014

Thu 11/2610:15 pm -

Nonstop7h 35m

Thu 12/312:05 pm -

1 stop33h 55m

Deal found 10/22

$927

Tue 11/106:15 am -

1 stop10h 25m

Wed 11/1812:20 pm -

1 stop14h 55m

Deal found 10/22

$852

Sun 12/66:55 pm -

Nonstop7h 10m

Sun 12/139:55 am -

1 stop12h 20m

Deal found 10/21

$973

Thu 1/148:30 pm -

2 stops14h 55m

Sun 1/176:40 pm -

1 stop27h 35m

Deal found 10/18

$838

Tue 10/2711:15 pm -

Nonstop7h 35m

Tue 11/101:45 pm -

1 stop32h 15m

Deal found 10/22

$927

Sun 12/131:00 pm -

1 stop12h 55m

Tue 2/912:20 pm -

1 stop15h 35m

Deal found 10/22

$899

Sun 11/86:55 pm -

Nonstop7h 10m

Mon 11/161:50 pm -

Nonstop8h 15m

Deal found 10/20

$1,012

Tue 11/2410:15 pm -

Nonstop7h 35m

Mon 11/3012:05 pm -

1 stop33h 55m

Deal found 10/18

$928

Thu 11/128:30 pm -

1 stop17h 00m

Mon 11/166:40 pm -

2 stops46h 12m

Deal found 10/20

$859

Sat 12/126:18 am -

1 stop10h 22m

Fri 1/812:20 pm -

1 stop15h 35m

Deal found 10/18

$915

Wed 11/411:13 am -

2 stops17h 07m

Sun 11/86:40 am -

2 stops21h 15m

Deal found 10/19

$937

Last-minute flights from Washington, D.C. to Heathrow
Discover last-minute flight deals from Washington, D.C. to Heathrow. Data last updated October 23, 2026 and is based on user searches.

Wed 11/410:30 pm -

1 stop12h 00m

Fri 11/2012:25 pm -

1 stop13h 05m

Deal found 10/20

$695

Sat 11/78:30 pm -

2 stops15h 30m

Mon 11/96:40 am -

1 stop15h 35m

Deal found 10/21

$698

Tue 11/105:25 pm -

1 stop23h 10m

Wed 11/188:15 am -

1 stop17h 15m

Deal found 10/20

$696

Tue 11/105:25 pm -

1 stop24h 15m

Mon 11/236:30 pm -

1 stop25h 10m

Deal found 10/20

$697

Tue 11/105:25 pm -

1 stop19h 05m

Tue 11/176:00 am -

1 stop13h 40m

Deal found 10/21

$707

Fri 11/1310:30 pm -

1 stop15h 25m

Thu 11/266:00 am -

1 stop14h 15m

Deal found 10/22

$699

Mon 11/167:40 pm -

1 stop10h 10m

Wed 11/2512:15 pm -

1 stop11h 15m

Deal found 10/18

$683

Mon 11/167:40 pm -

1 stop10h 10m

Mon 11/2312:15 pm -

1 stop11h 15m

Deal found 10/18

$688

Mon 11/167:40 pm -

2 stops16h 10m

Mon 11/238:50 am -

2 stops14h 50m

Deal found 10/19

$709

Tue 11/175:25 pm -

1 stop14h 15m

Wed 11/258:15 am -

1 stop17h 15m

Deal found 10/18

$693

Sat 11/285:25 pm -

1 stop13h 00m

Tue 12/86:00 am -

1 stop13h 40m

Deal found 10/22

$675

Mon 11/309:55 am -

3 stops29h 10m

Mon 12/76:30 pm -

3 stops30h 53m

Deal found 10/22

$673

One-way flights from Washington, D.C. to Heathrow
Search for one-way flight options from Washington, D.C. to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Mon 1/118:34 pm -

2 stops36h 51m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/22

$275

Mon 1/187:40 pm -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/23

$294

Mon 1/117:40 pm -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/22

$296

Tue 11/177:40 pm -

1 stop10h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$297

Mon 11/307:40 pm -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/20

$299

Wed 11/187:40 pm -

1 stop10h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$300

Thu 11/127:40 pm -

1 stop10h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$301

Wed 11/257:40 pm -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/22

$302

Mon 11/167:40 pm -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/20

$306

Mon 3/228:40 pm -

1 stop10h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$308

Tue 1/198:10 pm -

1 stop16h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$321

Tue 1/196:05 pm -

Nonstop7h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$322

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$669 (WAYA)
One-way from	$275 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$859
Good round-trip deal	$801 or less
Good one-way deal	$437 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London Heathrow flights.

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($203 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

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

Search Deals

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

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 3/15

10:30 am-12:00 pm

1 stop21h 30m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$329

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Tue 4/13

12:55 pm-10:25 am

2 stops16h 30m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$329

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Tue 4/20

12:27 pm-7:25 am

2 stops13h 58m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$332

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Thu 12/31

6:17 am-9:40 pm

1 stop10h 23m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$372

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Fri 12/25

6:17 am-8:55 pm

1 stop9h 38m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$459

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Fri 11/20

6:00 am-8:55 pm

1 stop9h 55m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$478

Quickest round-trip

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Tue 12/29

6:55 pm-7:05 am

Nonstop7h 10m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$489

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 12/9

3:30 pm-6:50 am

1 stop10h 20m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$489

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Sun 1/10

6:55 pm-7:20 am

Nonstop7h 25m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$489

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Mon 1/18

9:45 pm-10:00 am

Nonstop7h 15m

London Heathrow

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 60 resultsSorted by cheapest first

...

Compare providers for flights from Washington, D.C. to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Heathrow in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
BusinessClass	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars
Gotogate	Price Accuracy2 stars	Trust Score*3 stars
BudgetAir	Price Accuracy2 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C.-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

WAS-LHR

IAD-LHR

DCA-LHR

BWI-LHR

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 Washington, D.C. to London Heathrow Airport

WAS-LHR

IAD-LHR

DCA-LHR

BWI-LHR

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $693). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $1,306). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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

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

Airfare is below average for this route at the moment.

Washington, D.C. to London Heathrow Airport flights typically cost between $712 and $1,031 in January.
The cheapest round-trip price found within the last 5 days was $669 on Iberia (Jan 14-Jan 21).

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

New York (JFK) – chosen by Cheapflights users on 54% of 1-stop itineraries from Washington, D.C. to London Heathrow Airport on Cheapflights.

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

Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $593.

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

Flights via Newark (EWR) have the shortest average one-way travel time for 1-stop routes: 9h 35m.

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

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 1h 23m.

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

About 18% of weekly flights between Washington, D.C. and London have experienced delays in the past year, with the average delay time being 174 minutes.

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

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

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

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

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

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

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

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

Our travel experts

Ramsey Qubein

Expert on LHR and IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Peruse reviews from past customers who have flown with Virgin Atlantic,United Airlines, andAmerican Airlines from Washington, D.C. to London Heathrow Airport 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

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Virgin Atlantic

7.5

Good

697 reviews

Virgin Atlantic

7.5

Good

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

United Airlines

7.3

Good

10,424 reviews

Virgin Atlantic

7.5

Good

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

American Airlines

7.0

Good

12,195 reviews

Virgin Atlantic

7.5

Good

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Icelandair

7.0

Good

764 reviews

Virgin Atlantic

7.5

Good

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

British Airways

6.7

Okay

8,267 reviews

Virgin Atlantic

7.5

Good

697 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Related info for your journey

How long is the flight from Washington, D.C. to London Heathrow Airport?
There are many flights that can get you from Washington, D.C. to London Heathrow Airport in 14h 55m. Fly via Scandinavian Airlines, Icelandair, or JetBlue to get the fastest option. The distance between Washington, D.C. and London Heathrow Airport is about 3664 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Washington, D.C. to London Heathrow Airport round-trip?
Flying on TAP AIR PORTUGAL is currently your cheapest option to London Heathrow Airport, with prices starting at $424. Additional round-trip tickets that might be worth considering are offered by Virgin Atlantic and Delta, with the lowest prices starting at $432 and $450, respectively. TAP AIR PORTUGAL is currently priced 54% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as $229 on KLM. Other airlines that offer cheap prices include Icelandair from $273 and JetBlue from $300 one-way.
What are the most popular routes from Washington, D.C. to London Heathrow Airport?
The most popular flight routes from Washington, D.C. to London Heathrow Airport are Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow and Washington, D.C. Reagan-National - London Heathrow.
What are the most reliable airlines from Washington, D.C. to London Heathrow Airport?
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 Washington, D.C. to London Heathrow Airport on time: Iberia (87%), Aer Lingus (81%), KLM (78%).
What are the cheapest flights from Washington, D.C. to London Heathrow Airport?
Looking at all options, your cheapest flight can be booked for $334. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $599 on average, our data indicates $1,576 when flying from Washington, D.C. to London Heathrow Airport.
Can I find deals for flights from Washington, D.C. to Heathrow that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Heathrow.
Can I find deals for business class flights from Washington, D.C. to Heathrow?
Yes. Cheapflights offers flight deals from Washington, D.C. to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $693). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $1,306). 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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Top 10 airlines flying from Washington, D.C. to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$424	Average$641	FlexibilityNo cancel fee	On-timeN/A
Virgin Atlantic	Cheapest$432	Average$890	FlexibilityNo cancel fee	On-time72%
Delta	Cheapest$450	Average$997	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$462	Average$937	FlexibilityNo cancel fee	On-time69%
Icelandair	Cheapest$481	Average$721	FlexibilityNo cancel fee	On-time76%
Iberia	Cheapest$500	Average$915	FlexibilityNo cancel fee	On-time77%
Scandinavian Airlines	Cheapest$560	Average$805	FlexibilityNo cancel fee	On-time77%
Air France	Cheapest$581	Average$1,069	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$588	Average$952	FlexibilityNo cancel fee	On-time70%
Finnair	Cheapest$591	Average$864	FlexibilityNo cancel fee	On-time76%

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$275+ Cheap flights from Washington, D.C. (WAS) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheapest flights from Washington, D.C. to HeathrowExplore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Explore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Washington, D.C. to HeathrowDiscover carefully curated flight deals from Washington, D.C. to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Discover carefully curated flight deals from Washington, D.C. to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Washington, D.C. to HeathrowDiscover last-minute flight deals from Washington, D.C. to Heathrow. Data last updated October 23, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Heathrow. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Washington, D.C. to HeathrowSearch for one-way flight options from Washington, D.C. to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Search for one-way flight options from Washington, D.C. to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

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

Compare providers for flights from Washington, D.C. to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Heathrow in October.

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

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

Cheapflights Insights

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

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

Find hourly flight availability from Washington, D.C. to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2026.

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

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

Airfare is below average for this route at the moment.

Washington, D.C. to London Heathrow Airport flights typically cost between $712 and $1,031 in January.The cheapest round-trip price found within the last 5 days was $669 on Iberia (Jan 14-Jan 21).

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

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

New York (JFK) – chosen by Cheapflights users on 54% of 1-stop itineraries from Washington, D.C. to London Heathrow Airport on Cheapflights.

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

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

Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $593.

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

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

Flights via Newark (EWR) have the shortest average one-way travel time for 1-stop routes: 9h 35m.

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

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

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 1h 23m.

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

About 18% of weekly flights between Washington, D.C. and London have experienced delays in the past year, with the average delay time being 174 minutes.

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

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

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

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

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

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

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

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Reviews of airlines servicing Heathrow

Related info for your journey

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

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

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

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

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

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

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

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

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

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

Traveling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

Cheapest flights from Washington, D.C. to Heathrow
Explore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Washington, D.C. to Heathrow
Discover carefully curated flight deals from Washington, D.C. to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Washington, D.C. to Heathrow
Discover last-minute flight deals from Washington, D.C. to Heathrow. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Washington, D.C. to Heathrow
Search for one-way flight options from Washington, D.C. to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Washington, D.C. to London Heathrow Airport flights typically cost between $712 and $1,031 in January.
The cheapest round-trip price found within the last 5 days was $669 on Iberia (Jan 14-Jan 21).