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

For as low as £431, Delta can have you in Washington, D.C. from London Heathrow Airport in 8h 35m. There are 3664 mi between London Heathrow Airport and Washington, D.C.. This flight may include one or multiple stops.

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

According to our current data, Icelandair (£323), TAP AIR PORTUGAL (£382), and Aer Lingus (£395) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. Icelandair is currently priced 38% below the average price you’ll pay for this route.

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

The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £314. However, be on the lookout for offers from JetBlue and Aer Lingus, as they are both options that can get you from London Heathrow Airport to Washington, D.C. for a low price.

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 Heathrow Airport to Washington, D.C.?

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

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

Looking for the cheapest flight from London Heathrow Airport to Washington, D.C.? While on average our users pay £1,395, our data indicates the cheapest price to be £335. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £242.

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

Consider Air Canada (78%), Austrian Airlines (78%) or Copa Airlines (78%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Washington, D.C..

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

When booking a flight from London Heathrow Airport to Washington, D.C., you may want to consider flying on Virgin Atlantic, British Airways or Lufthansa as they are the most popular for this route.

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

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

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£213+ Cheap Flights from London Heathrow Airport to Washington, D.C.

Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in September or January, booked 68 days in advance, depart on a Friday or Thursday and return on a Monday

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

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Thu 24/916:40 -

Nonstop8h 40m

Sun 4/1018:35 -

Nonstop7h 20m

Deal found 16/9£416

Fri 25/915:50 -

1 stop12h 09m

Mon 26/1015:15 -

1 stop11h 35m

Deal found 16/9£416

Fri 20/1109:00 -

2 stops16h 10m

Fri 27/1109:55 -

2 stops16h 15m

Deal found 15/9£416

Sat 14/1109:00 -

2 stops15h 58m

Sun 22/1116:00 -

2 stops14h 20m

Deal found 15/9£416

Thu 24/908:40 -

1 stop11h 55m

Sat 10/1022:05 -

Nonstop7h 35m

Deal found 16/9£417

Thu 24/906:30 -

1 stop14h 05m

Sat 10/1022:05 -

Nonstop7h 35m

Deal found 15/9£418

Thu 24/914:05 -

1 stop12h 45m

Sun 27/909:40 -

1 stop15h 50m

Deal found 15/9£418

Wed 23/916:40 -

Nonstop8h 35m

Mon 28/918:35 -

Nonstop7h 20m

Deal found 15/9£419

Wed 7/1008:40 -

2 stops19h 15m

Wed 14/1011:05 -

1 stop16h 45m

Deal found 17/9£419

Fri 20/1109:00 -

2 stops15h 58m

Fri 4/1216:00 -

2 stops14h 20m

Deal found 14/9£419

Thu 24/912:15 -

Nonstop8h 15m

Sat 10/1022:05 -

Nonstop7h 35m

Deal found 16/9£420

Thu 24/908:20 -

1 stop13h 12m

Wed 30/912:55 -

1 stop12h 50m

Deal found 16/9£420

Best flights from Heathrow to Washington, D.C.
Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Tue 13/1006:30 -

2 stops15h 07m

Thu 29/1012:27 -

1 stop15h 18m

Deal found 13/9£422

Wed 25/1112:05 -

Nonstop8h 35m

Mon 11/118:20 -

Nonstop7h 20m

Deal found 16/9£431

Mon 23/1116:20 -

Nonstop8h 55m

Sun 6/1222:15 -

Nonstop7h 35m

Deal found 12/9£432

Fri 13/1114:00 -

Nonstop8h 40m

Fri 14/522:35 -

Nonstop7h 25m

Deal found 13/9£432

Mon 19/1016:40 -

Nonstop8h 40m

Mon 14/1218:20 -

Nonstop7h 20m

Deal found 12/9£432

Fri 2/1009:15 -

1 stop11h 52m

Thu 15/1016:55 -

1 stop9h 55m

Deal found 15/9£435

Wed 25/1117:20 -

1 stop11h 21m

Mon 30/1115:30 -

1 stop10h 20m

Deal found 13/9£437

Mon 14/1212:15 -

1 stop11h 25m

Sat 9/119:40 -

1 stop10h 10m

Deal found 13/9£480

Fri 4/1212:05 -

Nonstop8h 35m

Tue 26/118:20 -

Nonstop7h 20m

Deal found 16/9£431

Fri 6/1111:20 -

1 stop12h 17m

Sat 21/1117:15 -

1 stop11h 40m

Deal found 17/9£434

Thu 22/1016:05 -

1 stop12h 32m

Thu 29/1015:15 -

1 stop14h 40m

Deal found 17/9£434

Mon 2/1113:10 -

1 stop11h 05m

Mon 16/1114:56 -

1 stop9h 54m

Deal found 12/9£436

Wed 23/916:40 -

Nonstop8h 35m

Wed 30/906:45 -

1 stop9h 40m

Deal found 14/9£432

Sun 11/1008:20 -

1 stop13h 17m

Fri 23/1006:08 -

1 stop9h 02m

Deal found 15/9£435

Fri 30/1016:35 -

1 stop21h 34m

Sun 8/1115:59 -

1 stop10h 51m

Deal found 12/9£436

Tue 22/916:40 -

Nonstop8h 35m

Tue 29/918:35 -

Nonstop7h 20m

Deal found 14/9£432

Thu 15/1015:50 -

1 stop12h 05m

Sun 18/1006:08 -

1 stop9h 02m

Deal found 12/9£436

Sun 1/1113:50 -

Nonstop8h 15m

Sun 8/1118:55 -

Nonstop7h 10m

Deal found 16/9£501

Sun 1/1116:20 -

Nonstop8h 55m

Wed 18/1118:20 -

Nonstop7h 20m

Deal found 14/9£432

Sun 13/1209:40 -

1 stop13h 19m

Thu 7/114:35 -

1 stop11h 15m

Deal found 14/9£437

Wed 2/1213:50 -

Nonstop8h 15m

Tue 26/118:55 -

Nonstop7h 10m

Deal found 16/9£501

Fri 11/1216:20 -

Nonstop8h 55m

Thu 14/118:20 -

Nonstop7h 20m

Deal found 13/9£432

Mon 23/1108:55 -

1 stop12h 35m

Sat 5/1218:55 -

Nonstop7h 25m

Deal found 12/9£454

Wed 25/1113:50 -

Nonstop8h 15m

Wed 13/118:55 -

Nonstop7h 10m

Deal found 16/9£501

Fri 2/1012:15 -

Nonstop8h 15m

Mon 5/1022:05 -

Nonstop7h 35m

Deal found 13/9£432

Sun 13/1213:50 -

Nonstop8h 15m

Thu 7/118:55 -

Nonstop7h 10m

Deal found 14/9£503

Tue 6/1008:00 -

1 stop12h 42m

Wed 21/1019:29 -

1 stop11h 26m

Deal found 15/9£435

Thu 12/1109:55 -

1 stop12h 22m

Mon 30/1118:55 -

Nonstop7h 10m

Deal found 15/9£506

Tue 13/1008:00 -

1 stop12h 42m

Fri 30/1013:05 -

1 stop12h 50m

Deal found 13/9£437

Fri 9/1015:00 -

1 stop12h 17m

Sun 18/1021:35 -

Nonstop7h 20m

Deal found 12/9£507

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

Round-trip from	£405
One-way from	£213
Popular in	May
Cheapest in	September
Average price	£454
Good round-trip deal	£468 or less
Good one-way deal	£360 or less

Virgin Atlantic
28/2-7/3
1 total stop
21h 40m total
London to Washington, D.C.

Search Deals

Icelandair
10/11-31/12
1 total stop
11h 25m total
London to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£26 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 Heathrow to Washington, D.C. (WAS).

Search Deals

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

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport 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

Fri 13/11

06:30-17:53

2 stops16h 23m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£358

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 14/11

06:30-17:24

2 stops15h 54m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£358

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Mon 14/12

06:30-18:06

2 stops16h 36m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£359

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sat 14/11

11:40-19:15

1 stop12h 35m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£361

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 14/11

12:15-18:40

1 stop11h 25m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£361

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 7/11

11:45-19:05

1 stop12h 20m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£361

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Tue 10/11

19:05-16:20

1 stop26h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£362

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sun 15/11

09:15-16:20

1 stop36h 05m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£362

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

£363

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Tue 17/11

11:30-23:27

2 stops16h 57m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£364

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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

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

LHR-WAS

LHR-IAD

LHR-DCA

LHR-BWI

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 Heathrow Airport to Washington, D.C.

LHR-WAS

LHR-IAD

LHR-DCA

LHR-BWI

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of £474). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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

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

The most flights from LHR to WAS are scheduled on a Wednesday (30 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (22 on average).

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

Airfare is below average for this route at the moment.

London Heathrow Airport to Washington, D.C. flights typically cost between £422 and £544 in February.
The cheapest return price found within the last 5 days was £405 on Virgin Atlantic (28 Feb–7 Mar).

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

Dublin (DUB) – chosen by Cheapflights users on 39% of one-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £426.

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

Flights via Newark (EWR) have the shortest average one-way travel time for one-stop routes: 11h 08m.

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

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 12m.

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

About 15% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

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

The best time to book flights from London Heathrow Airport to Washington, D.C. is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Washington, D.C.

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

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Austrian Airlines

7.5

Good

960 reviews

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

United Airlines

7.4

Good

10,214 reviews

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

Virgin Atlantic

7.4

Good

694 reviews

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

Lufthansa

6.8

Okay

8,229 reviews

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

British Airways

6.7

Okay

8,228 reviews

Austrian Airlines

7.5

Good

960 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2026

VIE - EWR

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C.?
For as low as £431, Delta can have you in Washington, D.C. from London Heathrow Airport in 8h 35m. There are 3664 mi between London Heathrow Airport and Washington, D.C.. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?
According to our current data, Icelandair (£323), TAP AIR PORTUGAL (£382), and Aer Lingus (£395) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. Icelandair is currently priced 38% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?
The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £314. However, be on the lookout for offers from JetBlue and Aer Lingus, as they are both options that can get you from London Heathrow Airport to Washington, D.C. for a low price.
What are the most popular routes from London Heathrow Airport to Washington, D.C.?
When deciding which route to take from London Heathrow Airport to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.
What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?
Consider Air Canada (78%), Austrian Airlines (78%) or Copa Airlines (78%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Washington, D.C..
What are the cheapest flights from London Heathrow Airport to Washington, D.C.?
Looking for the cheapest flight from London Heathrow Airport to Washington, D.C.? While on average our users pay £1,395, our data indicates the cheapest price to be £335. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £242.
Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Heathrow to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow 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 Heathrow to Washington, D.C..
Can I find deals for business class flights from Heathrow to Washington, D.C.?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of £474). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Silver Spring

Alexandria

Gaithersburg

Oxon Hill

Hanover

Woodbridge

Glen Burnie

Springfield

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Washington, D.C. flight routes

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

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

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

Finnair flights from London Heathrow to Washington, D.C.

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

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£323	Average£425	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£332	Average£521	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£380	Average£571	FlexibilityNo cancel fee	On-time75%	Search KLM flights
TAP AIR PORTUGAL	Cheapest£382	Average£446	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£395	Average£602	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Lufthansa	Cheapest£406	Average£541	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£407	Average£556	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£407	Average£555	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air France	Cheapest£407	Average£628	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Scandinavian Airlines	Cheapest£409	Average£476	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights

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

Cheapflights makes it easy to find Heathrow to Washington, D.C. flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Heathrow.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Washington, D.C. flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Heathrow to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London Heathrow Airport to Washington, D.C. from £213

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheapest flights from Heathrow to Washington, D.C.Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Heathrow to Washington, D.C.Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Heathrow to Washington, D.C.Explore direct flight options from Heathrow to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Explore direct flight options from Heathrow to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Heathrow to Washington, D.C.Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Heathrow to Washington, D.C.Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

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

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

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

Cheapflights Insights

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

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

Find hourly flight availability from Heathrow 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 17 September 2026.

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

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

The most flights from LHR to WAS are scheduled on a Wednesday (30 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (22 on average).

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

Airfare is below average for this route at the moment.

London Heathrow Airport to Washington, D.C. flights typically cost between £422 and £544 in February.The cheapest return price found within the last 5 days was £405 on Virgin Atlantic (28 Feb–7 Mar).

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

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

Dublin (DUB) – chosen by Cheapflights users on 39% of one-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

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

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £426.

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

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

Flights via Newark (EWR) have the shortest average one-way travel time for one-stop routes: 11h 08m.

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

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

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 12m.

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

About 15% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

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

The best time to book flights from London Heathrow Airport to Washington, D.C. is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Washington, D.C.

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

Related info for your journey

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

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

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

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

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

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

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

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

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

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

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

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

Choose from the following airlines for your flight from Heathrow to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

Alternative routes for Heathrow 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 Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Heathrow to Washington, D.C.
Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Heathrow to Washington, D.C.
Explore direct flight options from Heathrow to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Heathrow to Washington, D.C.
Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

London Heathrow Airport to Washington, D.C. flights typically cost between £422 and £544 in February.
The cheapest return price found within the last 5 days was £405 on Virgin Atlantic (28 Feb–7 Mar).