£343 Cheap Flights from London (LHR) to Washington (DCA)

View £343 flight on Fri, 15 May 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Ronald Reagan National Airport (DCA)

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Cheap Flights from London (LHR) to Washington (DCA)

Prices were available within the past 7 days and start at £343 for one-way flights and £513 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 10 Nov - Thu, 19 Nov
LHR
London
DCA
Washington
£513 Return, found 2 days ago
£513
Return
found 2 days ago
Select American Airlines flight, departing Tue, 10 Nov from London to Washington, returning Thu, 19 Nov, priced at £513 found 2 days ago
Iberia
Wed, 23 Sept - Sun, 27 Sept
LHR
London
DCA
Washington
£513 Return, found 2 days ago
£513
Return
found 2 days ago
Select Iberia flight, departing Wed, 23 Sept from London to Washington, returning Sun, 27 Sept, priced at £513 found 2 days ago
Iberia
Mon, 16 Nov - Mon, 30 Nov
LHR
London
DCA
Washington
£514 Return, found 1 day ago
£514
Return
found 1 day ago
Select Iberia flight, departing Mon, 16 Nov from London to Washington, returning Mon, 30 Nov, priced at £514 found 1 day ago
British Airways
Mon, 16 Nov - Mon, 30 Nov
LHR
London
DCA
Washington
£518 Return, found 1 day ago
£518
Return
found 1 day ago
Select British Airways flight, departing Mon, 16 Nov from London to Washington, returning Mon, 30 Nov, priced at £518 found 1 day ago
British Airways
Wed, 9 Dec - Thu, 7 Jan
LHR
London
DCA
Washington
£520 Return, found 18 hours ago
£520
Return
found 18 hours ago
Select British Airways flight, departing Wed, 9 Dec from London to Washington, returning Thu, 7 Jan, priced at £520 found 18 hours ago
KLM
Wed, 18 Nov - Sat, 21 Nov
LHR
London
DCA
Washington
£523 Return, found 2 days ago
£523
Return
found 2 days ago
Select KLM flight, departing Wed, 18 Nov from London to Washington, returning Sat, 21 Nov, priced at £523 found 2 days ago
KLM
Mon, 28 Sept - Fri, 23 Oct
LHR
London
DCA
Washington
£526 Return, found 2 days ago
£526
Return
found 2 days ago
Select KLM flight, departing Mon, 28 Sept from London to Washington, returning Fri, 23 Oct, priced at £526 found 2 days ago
KLM
Wed, 15 Jul - Tue, 28 Jul
LHR
London
DCA
Washington
£527 Return, found 15 hours ago
£527
Return
found 15 hours ago
Select KLM flight, departing Wed, 15 Jul from London to Washington, returning Tue, 28 Jul, priced at £527 found 15 hours ago
Air France
Wed, 18 Nov - Sat, 21 Nov
LHR
London
DCA
Washington
£528 Return, found 2 days ago
£528
Return
found 2 days ago
Select Air France flight, departing Wed, 18 Nov from London to Washington, returning Sat, 21 Nov, priced at £528 found 2 days ago
Iberia
Mon, 16 Nov - Mon, 30 Nov
LHR
London
DCA
Washington
£528 Return, found 1 day ago
£528
Return
found 1 day ago
Select Iberia flight, departing Mon, 16 Nov from London to Washington, returning Mon, 30 Nov, priced at £528 found 1 day ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Baltimore Washington Intl. Thurgood Marshall BWI. Cheapest option available. Average driving time to city centre is 40 minutes. Flights from £486
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city centre40 min
Flights from £486
Select flight to Washington Dulles Intl. IAD. Average driving time to city centre is 36 minutes. Flights from £508
IAD
Washington Dulles Intl.
Average driving time to city centre36 min
Flights from £508

Frequently asked questions

How much is a flight from Heathrow Airport (LHR) to National Airport?
Round-trip journeys between London Heathrow and Ronald Reagan Washington National Airport (DCA) start from £513. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — book today so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to National Airport?
Most flights can be cancelled online, but every air carrier has its own set of terms and conditions. If you do need to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport to DCA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from LHR to National Airport?
With a flight distance of 5,900 kilometres between Hounslow and Arlington, this is a long flight. Ensure that you keep well hydrated and go for a short walk down the aisle every so often.
Which airlines fly direct from Heathrow Airport to DCA?
Direct flights aren't available, so you'll have to make at least one stop between Heathrow Airport and DCA. Use the layover time to stretch your legs and grab a bite to eat.
Are Heathrow Airport to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from London Heathrow to DCA can be hit-or-miss. It is possible to score a bargain, but you could also miss out completely! If you'd prefer to start your travel planning ahead of time, Expedia compares flight deals up to a year in advance. Just remember that not all airlines release their prices that far in advance. Our advice? Check back often as updates are made regularly.

Frequently asked questions

How do I find cheap flights from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
To find a cheap flight from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
There are approximately 101 connecting flights per day from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National). Some common connection points include John F. Kennedy Intl. (JFK), Logan Intl. (BOS), and Unknown (DUB).
What is the earliest flight from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
The earliest flight from London Heathrow (LHR) to Washington, DC (DCA-Ronald Reagan Washington National) typically departs at approximately 6:00 AM local time. This service is seasonal, active only in May, and is operated by airlines such as BT, LX, and AC. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
You'll typically find the most flights from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) on a Monday, with around 82 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, British Airways, and United Airlines.
What are the most popular departure times for flights from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
The most popular departure times for flights from London Heathrow (LHR) to Washington, DC (DCA) are in the morning, from 9am to 12pm. About 46% of passengers prefer this time. Many major carriers, including American Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to start your travel day at a reasonable hour and arrive in Washington, DC with plenty of time to settle in.
How long does it take to fly from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
Flying from LHR to DCA with a connection usually takes about 12 hours 50 minutes, traveling roughly 3,655 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
Select the "Business class" and "First class" filters when looking for LHR to DCA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Heathrow (LHR)?
From Heathrow (LHR), you can fly into Ronald Reagan Washington National (DCA) and Washington Dulles Intl. (IAD) in Washington. Some flights may connect through major hubs like Schiphol (AMS), ZRH (ZRH), Charlotte-Douglas Intl. (CLT) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package?
Securing a London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National)?
If you booked your London (LHR-Heathrow) to Washington, DC (DCA-Ronald Reagan Washington National) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Ronald Reagan Washington National
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Scandinavian Airlines, TAP Portugal, United, Virgin Atlantic
Return price
£512
Distance
5847 km

Book with confidence

Compare flights from London to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Washington. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Ronald Reagan Washington National in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Ronald Reagan Washington National.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Ronald Reagan Washington National (DCA)

The easiest way to view the best deals on flights from London to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Ronald Reagan Washington National start at just £513 and range up to £528.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Washington
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Ronald Reagan Washington National for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to Washington easily and book with confidence

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