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Cheap flights from London Heathrow Airport to Washington, D.C. from ₹ 52,193

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Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from London Heathrow Airport to Washington, D.C..
American Airlines Logo
LHR-IAD
8h 15mdirect
American Airlines Logo
IAD-LHR
7h 35mdirect
American Airlines
Find Deal
KLM Logo
LHR-IAD
8h 25mdirect
KLM Logo
IAD-LHR
7h 30mdirect
Air Canada Logo
LHR-IAD
8h 10mdirect
Air Canada Logo
IAD-LHR
7h 25mdirect
Air Canada
Find Deal
Aer Lingus Logo
LHR-IAD
8h 15mdirect
Aer Lingus Logo
IAD-LHR
7h 35mdirect
Aer Lingus
Find Deal
Austrian Airlines Logo
LHR-IAD
8h 10mdirect
Austrian Airlines Logo
IAD-LHR
7h 25mdirect
Austrian Airlines
Find Deal
Air France Logo
LHR-IAD
8h 25mdirect
Air France Logo
IAD-LHR
7h 30mdirect
Air France
Find Deal
Delta Logo
LHR-IAD
8h 25mdirect
Delta Logo
IAD-LHR
7h 30mdirect
Copa Airlines Logo
LHR-IAD
8h 10mdirect
Copa Airlines Logo
IAD-LHR
7h 25mdirect
Copa Airlines
Find Deal
SWISS Logo
LHR-IAD
8h 20mdirect
SWISS Logo
IAD-LHR
7h 25mdirect
United Airlines Logo
LHR-IAD
8h 10mdirect
United Airlines Logo
IAD-LHR
7h 25mdirect
United Airlines
Find Deal
Finnair Logo
LHR-IAD
8h 00mdirect
Finnair Logo
IAD-LHR
7h 35mdirect
Finnair
Find Deal
Iberia Logo
LHR-IAD
8h 15mdirect
Iberia Logo
IAD-LHR
7h 35mdirect
Iberia
Find Deal
Lufthansa Logo
LHR-IAD
8h 10mdirect
Lufthansa Logo
IAD-LHR
7h 25mdirect
Lufthansa
Find Deal
Virgin Atlantic Logo
LHR-IAD
8h 25mdirect
Virgin Atlantic Logo
IAD-LHR
7h 30mdirect
Virgin Atlantic
Find Deal
British Airways Logo
LHR-IAD
8h 10mdirect
British Airways Logo
IAD-LHR
7h 35mdirect
British Airways
Find Deal

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Heathrow Airport to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C.?

In general, February is the cheapest month to fly from London Heathrow Airport to Washington, D.C.. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 59,808. The month of January is another great option to travel to Washington, D.C., with average flight prices from London Heathrow Airport averaging around ₹ 61,262.

What is the cheapest day to depart on your flight to Washington, D.C.?

The cheapest day to depart on your flight to Washington, D.C. is on a Monday when prices can be found for as low as ₹ 0. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Washington, D.C. for around ₹ 130,269.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

Our most recent data shows that the best time of day to fly to Washington, D.C. is at midday. Flights from London Heathrow Airport to Washington, D.C. during this time can be as low as ₹ 0. Flights in the morning are often more expensive, with an average ticket price of ₹ 83,899.

What is the cheapest London Heathrow to Washington, D.C. flight route?

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London Heathrow - Washington, D.C. flight prices

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from London Heathrow Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around ₹ 74,903 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Heathrow Airport for as low as ₹ 63,316 on momondo.

What cabin class options are available on London Heathrow to Washington, D.C. flights?

There are 2 cabin classes available to choose from on London Heathrow to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Washington, D.C. flight prices changed over time?

As of April 2025, prices for London Heathrow Airport to Washington, D.C. flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Washington, D.C. (LHR to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Washington, D.C.

Direct flights

None
There are no direct flights from London Heathrow Airport to Washington, D.C.. There are no popular flight routes from London Heathrow Airport to Washington, D.C..

  • How far is London Heathrow to Washington, D.C. by plane?

    London Heathrow and Washington, D.C. are 5873.1 km apart from one another.

  • When did momondo last update prices for flights from London Heathrow Airport to Washington, D.C.?

    Prices for flights from London Heathrow Airport to Washington, D.C. are refreshed on a daily basis.

  • How old do you have to be to fly from London Heathrow Airport to Washington, D.C.?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Washington, D.C.?


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

Book flights to Washington, D.C. if you plan to visit one of these locations
Manassas
Herndon
Fairfax
Arlington
College Park
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Washington, D.C.?

Once all potential London to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 36.1 km from Washington, D.C.