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

For as low as £486, British Airways can have you in Washington, D.C. from London Heathrow Airport in 10h 55m. 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, Virgin Atlantic (£305), Icelandair (£323), and TAP AIR PORTUGAL (£342) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. Virgin Atlantic is currently priced 41% 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 £334. However, be on the lookout for offers from JetBlue and Finnair, 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 £992, our data indicates the cheapest price to be £365. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £263.

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

Consider Air Canada (75%), Austrian Airlines (75%) or Copa Airlines (75%) 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.

£389+ 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 79 days in advance, depart on a Friday or Wednesday and return on a Tuesday

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 10 November 2026.

Fri 25/1212:15 -

1 stop11h 15m

Sat 30/119:40 -

1 stop10h 10m

Deal found 7/11£405

Wed 16/1216:20 -

Nonstop8h 55m

Fri 23/406:00 -

1 stop10h 25m

Deal found 7/11£406

Tue 1/1220:35 -

1 stop26h 55m

Thu 10/1219:40 -

1 stop18h 50m

Deal found 9/11£406

Sun 13/1220:35 -

1 stop26h 55m

Tue 5/119:40 -

1 stop18h 50m

Deal found 6/11£409

Thu 3/1212:00 -

1 stop14h 57m

Tue 8/1213:25 -

1 stop14h 45m

Deal found 5/11£409

Sun 13/1220:35 -

1 stop26h 55m

Fri 8/119:40 -

1 stop18h 50m

Deal found 5/11£410

Wed 11/1118:30 -

1 stop25h 45m

Mon 11/117:25 -

1 stop23h 10m

Deal found 8/11£411

Thu 12/1106:00 -

1 stop14h 15m

Mon 16/1117:25 -

1 stop23h 10m

Deal found 5/11£412

Thu 10/1212:15 -

1 stop11h 15m

Wed 6/119:40 -

1 stop10h 10m

Deal found 6/11£412

Wed 18/1118:30 -

1 stop25h 45m

Tue 1/1217:25 -

1 stop24h 15m

Deal found 9/11£414

Thu 3/1212:15 -

1 stop11h 15m

Sun 13/1219:40 -

1 stop10h 10m

Deal found 8/11£417

Mon 7/1220:35 -

1 stop26h 55m

Sun 13/1219:40 -

1 stop10h 10m

Deal found 8/11£418

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 10 November 2026.

Mon 19/409:50 -

1 stop10h 55m

Tue 4/522:25 -

Nonstop7h 25m

Deal found 5/11£486

Mon 15/210:00 -

1 stop10h 55m

Tue 23/210:45 -

2 stops16h 10m

Deal found 7/11£492

Wed 16/1213:45 -

1 stop32h 15m

Wed 6/117:28 -

2 stops17h 52m

Deal found 7/11£512

Sat 26/1208:40 -

1 stop12h 15m

Sun 10/118:40 -

1 stop10h 50m

Deal found 5/11£545

Sun 24/110:10 -

1 stop11h 58m

Thu 18/211:10 -

1 stop14h 10m

Deal found 9/11£492

Tue 5/114:10 -

1 stop12h 49m

Wed 31/317:16 -

1 stop10h 14m

Deal found 8/11£534

Thu 24/1216:20 -

Nonstop8h 55m

Wed 3/217:25 -

1 stop14h 35m

Deal found 8/11£540

Wed 3/215:50 -

1 stop11h 35m

Sat 6/214:00 -

1 stop11h 25m

Deal found 5/11£532

Sat 12/1216:20 -

Nonstop8h 55m

Sun 18/422:10 -

Nonstop7h 30m

Deal found 9/11£547

Tue 15/1211:40 -

1 stop12h 33m

Wed 6/106:00 -

1 stop11h 10m

Deal found 5/11£549

Fri 11/1206:20 -

2 stops15h 11m

Tue 15/1219:40 -

1 stop11h 00m

Deal found 9/11£539

Mon 14/1210:35 -

1 stop11h 16m

Fri 11/606:00 -

1 stop10h 00m

Deal found 7/11£551

Mon 14/1207:30 -

2 stops18h 30m

Fri 11/622:10 -

2 stops30h 50m

Deal found 7/11£571

Thu 10/1206:30 -

2 stops14h 53m

Thu 24/1213:50 -

1 stop11h 35m

Deal found 7/11£540

Fri 11/1211:40 -

1 stop12h 33m

Mon 14/1216:48 -

1 stop9h 12m

Deal found 5/11£552

Sat 27/309:00 -

2 stops26h 19m

Sat 10/412:55 -

1 stop14h 40m

Deal found 6/11£585

Sat 26/1213:05 -

Nonstop8h 40m

Sun 10/118:55 -

Nonstop7h 25m

Deal found 6/11£543

Wed 2/1209:00 -

1 stop13h 00m

Wed 9/1218:20 -

Nonstop7h 20m

Deal found 8/11£601

Wed 9/1213:10 -

1 stop12h 54m

Mon 21/1213:56 -

1 stop14h 44m

Deal found 5/11£613

Tue 30/306:30 -

2 stops16h 00m

Fri 9/408:20 -

1 stop17h 25m

Deal found 5/11£571

Tue 1/1212:05 -

1 stop33h 55m

Fri 4/1217:25 -

1 stop17h 55m

Deal found 5/11£604

Mon 21/1216:35 -

1 stop21h 25m

Mon 4/109:54 -

1 stop15h 56m

Deal found 7/11£575

Thu 26/1106:30 -

2 stops15h 53m

Thu 10/1208:48 -

1 stop17h 02m

Deal found 8/11£609

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

Round-trip from	£405
One-way from	£389
Popular in	May
Cheapest in	September
Average price	£523
Good round-trip deal	£534 or less
Good one-way deal	£426 or less

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£29 potential increase over avg. return price).

Search Deals

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

Search Deals

Average for round-trip flights in November 2026

Search Deals

Price to beat on a round-trip flight from London 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

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sun 24/1

11:25-10:52

2 stops28h 27m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£437

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Wed 20/1

06:15-21:33

2 stops20h 18m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£439

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sun 17/1

09:15-08:22

2 stops28h 07m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£439

Fastest return journey

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Mon 11/1

12:15-15:40

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£457

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sat 30/1

16:25-19:55

Nonstop8h 30m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£457

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Thu 21/1

14:15-08:22

1 stop23h 07m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£465

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Wed 23/12

12:20-22:17

1 stop14h 57m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£473

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Wed 9/12

12:20-22:52

1 stop15h 32m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£473

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Thu 24/12

12:20-22:17

1 stop14h 57m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£473

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Fri 8/1

12:20-22:55

1 stop15h 35m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£477

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 44 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

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

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 £476). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £582). 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 Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost for a return flight from London 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 £474 and £646 in December.
The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–30 Jan).

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

Dublin (DUB) – chosen by Cheapflights users on 37% 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.?

Munich (MUC) is the most affordable one-stop option, with an average return flight price of £430.

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 22m.

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

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

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

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

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

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

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

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

The best time to book flights from London Heathrow Airport to Washington, D.C. is 47 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 Virgin Atlantic,United Airlines, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

Virgin Atlantic

7.5

Good

698 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

United Airlines

7.3

Good

10,471 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

Icelandair

7.0

Good

766 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

Lufthansa

6.8

Okay

8,289 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

British Airways

6.7

Okay

8,285 reviews

Virgin Atlantic

7.5

Good

698 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

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

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C.?
For as low as £486, British Airways can have you in Washington, D.C. from London Heathrow Airport in 10h 55m. 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, Virgin Atlantic (£305), Icelandair (£323), and TAP AIR PORTUGAL (£342) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. Virgin Atlantic is currently priced 41% 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 £334. However, be on the lookout for offers from JetBlue and Finnair, 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 (75%), Austrian Airlines (75%) or Copa Airlines (75%) 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 £992, our data indicates the cheapest price to be £365. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £263.
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 £476). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £582). 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

Browse thousands of different options on Cheapflights for your next trip

Airlines

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Other flights from Heathrow

Popular flights

Top destinations

Washington, D.C. flight routes

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

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

Virgin Atlantic 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
Virgin Atlantic	Cheapest£270	Average£526	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£323	Average£453	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
TAP AIR PORTUGAL	Cheapest£342	Average£463	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
KLM	Cheapest£377	Average£579	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Aer Lingus	Cheapest£401	Average£591	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£408	Average£578	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Scandinavian Airlines	Cheapest£410	Average£518	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Lufthansa	Cheapest£412	Average£544	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£413	Average£566	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£417	Average£609	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

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

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

Cheap flight deals from 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 10 November 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 10 November 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 10 November 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 10 November 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 10 November 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 10 November 2026.

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

Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated 10 November 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 10 November 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 10 November 2026.

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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.

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 10 November 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London 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 Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost for a return flight from London 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 £474 and £646 in December.The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–30 Jan).

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 37% 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.

Munich (MUC) is the most affordable one-stop option, with an average return flight price of £430.

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 Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 22m.

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

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

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

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

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

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

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

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

The best time to book flights from London Heathrow Airport to Washington, D.C. is 47 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 Virgin Atlantic,United Airlines, andIcelandair. 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.?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 10 November 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 10 November 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 10 November 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 10 November 2026.

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated 10 November 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 10 November 2026.

London Heathrow Airport to Washington, D.C. flights typically cost between £474 and £646 in December.
The cheapest return price found within the last 5 days was £405 on Icelandair (25 Dec–30 Jan).