$637 Cheap Flights from London (LHR) to Washington (DCA)

View $637 flight on Mon, Sep 22, 2025Opens in a new window

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

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Cheap Flights from London to Washington (LHR-DCA)

Prices were available within the past 7 days and start at $637 for one-way flights and $528 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Thu, Oct 30 - Mon, Nov 3
LHR
London
DCA
Washington
$528 Roundtrip, found 5 days ago
$528
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Thu, Oct 30 from London to Washington, returning Mon, Nov 3, priced at $528 found 5 days ago
JetBlue Airways
Thu, Oct 30 - Mon, Nov 3
LHR
London
DCA
Washington
$554 Roundtrip, found 5 days ago
$554
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Thu, Oct 30 from London to Washington, returning Mon, Nov 3, priced at $554 found 5 days ago
Iberia
Mon, Aug 25 - Wed, Sep 10
LHR
London
DCA
Washington
$574 Roundtrip, found 12 hours ago
$574
Roundtrip
found 12 hours ago
Select Iberia flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $574 found 12 hours ago
JetBlue Airways
Sun, Oct 26 - Sun, Nov 2
LHR
London
DCA
Washington
$580 Roundtrip, found 6 days ago
$580
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Sun, Oct 26 from London to Washington, returning Sun, Nov 2, priced at $580 found 6 days ago
Finnair
Mon, Aug 25 - Wed, Sep 10
LHR
London
DCA
Washington
$586 Roundtrip, found 12 hours ago
$586
Roundtrip
found 12 hours ago
Select Finnair flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $586 found 12 hours ago
Air Canada
Fri, Aug 22 - Fri, Sep 12
LHR
London
DCA
Washington
$594 Roundtrip, found 4 days ago
$594
Roundtrip
found 4 days ago
Select Air Canada flight, departing Fri, Aug 22 from London to Washington, returning Fri, Sep 12, priced at $594 found 4 days ago
Iberia
Mon, Aug 25 - Wed, Sep 10
LHR
London
DCA
Washington
$597 Roundtrip, found 12 hours ago
$597
Roundtrip
found 12 hours ago
Select Iberia flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $597 found 12 hours ago
Air Canada
Fri, Aug 22 - Fri, Sep 12
LHR
London
DCA
Washington
$601 Roundtrip, found 4 days ago
$601
Roundtrip
found 4 days ago
Select Air Canada flight, departing Fri, Aug 22 from London to Washington, returning Fri, Sep 12, priced at $601 found 4 days ago
JetBlue Airways
Wed, Dec 3 - Tue, Dec 9
LHR
London
DCA
Washington
$603 Roundtrip, found 1 hour ago
$603
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Wed, Dec 3 from London to Washington, returning Tue, Dec 9, priced at $603 found 1 hour ago
Swiss International Air Lines
Mon, Sep 8 - Wed, Sep 17
LHR
London
DCA
Washington
$608 Roundtrip, found 6 days ago
$608
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 8 from London to Washington, returning Wed, Sep 17, priced at $608 found 6 days ago

Find the cheapest month to fly from London (LHR) to Washington (DCA)

January is typically the cheapest month to fly

From $474 - $1,098 per traveler.

Graph displaying average flight prices per month

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. Average driving time to city center is 40 minutes. Flights from $881
BWI
Baltimore Washington Intl. Thurgood Marshall
Average driving time to city center40 min
Flights from $881
Select flight to Washington Dulles Intl. IAD. Cheapest option available. Average driving time to city center is 36 minutes. Flights from $795
IAD
Washington Dulles Intl.
Cheapest
Average driving time to city center36 min
Flights from $795
Flights from London (LHR) to Washington (DCA)
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
Roundtrip price
$527
Distance
3654 mi

London to Washington Flights

The cheapest times to fly from London to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Washington are during the month of October. You can find some of the cheapest flights from London to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Washington

Sunday is one of the best days to book for cheap flights from London to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $637 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA) cost?
Discover the latest flight deals from LHR to DCA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from LHR to DCA?
The cheapest flights from LHR to DCA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from LHR to DCA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LHR to DCA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA)?
You'll have to catch a flight with a layover when traveling from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from LHR to DCA?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA)?
Choose a flight from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Washington from Heathrow Airport (LHR)?
You'll touch down at Washington Dulles Intl. Airport (IAD) or Baltimore Washington Intl. Thurgood Marshall Airport (BWI) when you travel to Washington on a direct flight from Heathrow Airport (LHR).
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA) last-minute?
Booking your plane ticket from LHR to DCA shortly before your trip is typically more expensive. But if there's some wiggle room with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a LHR to DCA flight and hotel package?
You'll generally save money by booking a LHR to DCA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your ideal accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA)?
Usually, it's possible to reschedule or cancel your LHR to DCA flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

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Washington nearby Airports

Washington

London to Washington Dulles Intl.
$500.21

Baltimore

London to Baltimore Washington Intl. Thurgood Marshall
$581.41
London nearby Airports

London

Gatwick to Washington
$514.81
*Available to One Key members.