LHR - IAD

£354 Find Cheap Flights from London Heathrow Airport to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest return fare
£422
Typical prices: £425-£556
Iberia
Mon 22/2Thu 4/3
LHR - IAD • 1 stop
Cheapest direct flights
£424
Typical prices: £442-£577
Finnair, Iberia
Sat 6/3Sun 14/3
LHR - IAD • Direct
Advice from real travellers
Virgin Atlantic Economy Delight adds legroom and priority boarding on this long-haul route.
Lufthansa Premium Economy adds more space and an extra checked bag than standard economy.
Expert advice
Expert advice
Expert advice
Expert advice
Direct flights
You can fly direct with British Airways, United Airlines, and Virgin Atlantic. Average duration is 8h 22m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 90% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £489 (return)
Shortest trip • 11h 19m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Heathrow to Dulles Intl (LHR-IAD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Dulles Intl

Mon, 22 Feb - Thu, 4 Mar
Iberia Logo
06:15 - 16:20LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 05m1 stop Madrid Barajas
Iberia Logo
18:05 - 06:15IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 10mdirect
£422Iberia
Sat, 27 Feb - Sat, 6 Mar
Iberia Logo
07:30 - 16:20LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
13h 50m1 stop Madrid Barajas
Iberia Logo
21:45 - 10:00IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 15mdirect
£422Iberia
Mon, 19 Oct - Fri, 30 Oct
Virgin Atlantic Logo
15:50 - 19:15LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
8h 25mdirect
Virgin Atlantic Logo
19:15 - 10:25IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
11h 10m1 stop Amsterdam Schiphol
£423Virgin Atlantic
Wed, 14 Oct - Fri, 30 Oct
Virgin Atlantic Logo
15:50 - 19:15LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
8h 25mdirect
Virgin Atlantic Logo
19:15 - 10:25IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
11h 10m1 stop Amsterdam Schiphol
£423Virgin Atlantic
Tue, 23 Feb - Wed, 3 Mar
KLM Logo
08:40 - 15:45LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
12h 05m1 stop Amsterdam Schiphol
KLM Logo
18:55 - 07:20IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 25mdirect
£423KLM
Wed, 24 Feb - Mon, 1 Mar
KLM Logo
08:40 - 15:55LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
12h 15m1 stop Amsterdam Schiphol
KLM Logo
18:55 - 07:20IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 25mdirect
£423KLM
Wed, 24 Feb - Wed, 3 Mar
Multiple Airlines Logo
10:00 - 15:55LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
10h 55m1 stop Amsterdam Schiphol
Multiple Airlines Logo
18:55 - 07:20IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 25mdirect
£423Multiple Airlines
Tue, 23 Feb - Mon, 1 Mar
Multiple Airlines Logo
08:40 - 15:45LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
12h 05m1 stop Amsterdam Schiphol
Multiple Airlines Logo
18:55 - 07:20IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 25mdirect
£423Multiple Airlines
Wed, 16 Dec - Mon, 28 Dec
British Airways Logo
07:35 - 16:20LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
13h 45m1 stop Madrid Barajas
British Airways Logo
17:50 - 10:35IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
11h 45m1 stop Madrid Barajas
£425British Airways
Wed, 16 Dec - Tue, 29 Dec
British Airways Logo
07:35 - 16:20LHR  London Heathrow-IAD Washington, D.C. Dulles Intl
13h 45m1 stop Madrid Barajas
British Airways Logo
17:50 - 10:35IAD  Washington, D.C. Dulles Intl-LHR London Heathrow
11h 45m1 stop Madrid Barajas
£425British Airways
Booking Insights

KAYAK’s insights & trends for Heathrow to Dulles Intl flights

Get data-powered insights and trends into flights from Heathrow to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

Flight prices are typical for this route right now.

Flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport usually cost between £422 and £566 in February.
The lowest price found in the past 5 days was £422 on Iberia (22 Feb–4 Mar).

What’s the cheapest day of the week to fly from London Heathrow Airport to Washington Dulles Airport?

If your flying dates are flexible, you should consider flying to Washington Dulles Airport on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London Heathrow Airport to Washington Dulles Airport. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

The cheapest month for flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is February, where tickets cost £465 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £580 and £578 respectively.

Can I save money by flying with a stopover from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £514 on average.

How far in advance should I book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

To get a below average price on the flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport, you should book around 6 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow to Dulles Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Tara Craig

Tara Craig

Expert on Austrian Airlines

Tara Craig has been a journalist for 17 years, focusing on aviation for more than a decade. She has covered everything from how airports accommodate disabled passengers to the emergence of electric air taxis. Tara is constantly travelling and finds it hard to stop noticing things – good and bad – about the air travel experience.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Kirstie Pickering

Kirstie Pickering

Expert on LHR

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Good to know - Cheap tickets from London Heathrow Airport to Washington Dulles Airport

Low season

January

Cheapest flight

£354
Best time to beat the crowds (1% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from London Heathrow Airport to Washington Dulles Airport

When to book flights from Heathrow to Dulles Intl

Are your dates flexible? Find out the best times to travel from Heathrow to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking London Heathrow Airport to Washington Dulles Airport flights

  • Can I find accommodation at Dulles Airport?

    You can’t find long-stay accommodation at Dulles Airport, however, there are plenty of hotels in the vicinity where you can make a reservation. Embassy Suites Dulles Airport, the Westin Washington Dulles Airport, and the Hilton Washington Dulles International Airport are three options very close to the airport that offers free round-trip shuttle transfers.

  • Where can I exchange currency at Dulles Airport?

    International Currency Exchange (ICE) has a desk at Gate 32 Concourse A/B as well as at International Arrivals near the baggage reclaim hall. You can also find ICE counters at Gates C8/C12 on Concourse C and at Gate D18 on Concourse D. These offer currency exchange, money transfers, and other services.

  • Does Dulles Airport have a car hire centre?

    Yes, it does. You’ll need a shuttle transfer to the car hire centre at Dulles Airport, which makes stops at Curb 2C or 2D (from Baggage Reclaim, go down the ramp to Doors 2 and 4). Many of the providers, including Enterprise Rent a Car, Avis/Budget, and Hertz, use community transport, so be sure to enquire before boarding.

  • What other cities are reachable from Dulles Airport?

    Dulles Airport serves the Baltimore–Washington metro area as well as portions of the state of Virginia. From there you can reach quite a few cities like Baltimore (38 miles north), Fredericksburg, VA (53 miles south), or Annapolis (31 miles east of the US capital).

  • What are the most popular stopover flights on offer?

    stopover flights from Heathrow to Washington Dulles Airport (IAD) are the most common choice, and often the most affordable. Aer Lingus offers one of the best options with a short, single stopover at Dublin Airport (DUB). Icelandair is another popular choice, with flights that have a quick single stopover at Keflavik International (KEF) en route.

  • What routes does TAP AIR Portugal operate between these cities?

    TAP AIR Portugal offers some of the most affordable flights between these airports. The most common option is a single stopover flight that has a stop at Lisbon Airport (LIS) along the way. The second route the airline offers has two stopovers at Lisbon Airport and Newark Airport (EWR).

  • What is the baggage policy for TAP AIR Portugal flights?

    The majority of single stopover flights with TAP AIR offer a free cabin bag and free checked-in bag weighing up to 23 kg. If you're taking a flight with two stopovers, the initial cost only includes one cabin bag. You can add extra luggage during your booking process that'll be cheaper than adding luggage at the airport.

  • How do I reduce my carbon footprint on these flights?

    During the search process, check out the Less Co2 filter and you'll find the most eco-friendly flights. Currently, TAP AIR Portugal offers the most reduced Co2 flights. The airline's single-stopover flights that go through Lisbon offer a 19% reduction in emissions. 

  • What is the cheapest flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

    In the last 5 days, the lowest price for a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport was £354 for a one-way ticket and £422 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Washington Dulles Airport?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from London Heathrow Airport to Washington Dulles Airport?

    Only KLM offers inflight Wi-Fi service on the London Heathrow Airport to Washington Dulles Airport flight route.

  • Which aircraft models fly most regularly from London Heathrow Airport to Washington Dulles Airport?

    The Boeing 777 is the aircraft model that flies most regularly on the London Heathrow Airport to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from London Heathrow Airport to Washington Dulles Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London Heathrow Airport and Washington Dulles Airport, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from London Heathrow Airport to Washington Dulles Airport?

    There are direct flights from London Heathrow Airport to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from London to Washington, D.C., KLM or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from London to Washington, D.C. are KLM and Austrian Airlines. With an average price for the route of £581 and an overall rating of 7.8, KLM is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of £557 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington Dulles Airport with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight from Washington Dulles Airport to London Heathrow Airport? 25% of our users found flights on this route for £417 or less one-way and £470 or less round-trip.
  • British Airways, Virgin Atlantic, and Lufthansa are among several airlines offering direct flight service from London Heathrow Airport (LHR) to Dulles International Airport (IAD) in Washington, DC. British Airways and Virgin Atlantic have operational hubs at London Heathrow and their inbound flights to Dulles Airport use Concourse A/B.
  • London Heathrow Airport has good options if you choose to park your car while travelling to Washington, DC. Short-stay, valet parking and a meet-and-greet are all choices close to the airport terminals, while long-stay, business parking, and POD parking require a free shuttle bus to connect you with your respective terminal. Reserve a space online to save on daily rates.
  • If you need to relax before departure, London Heathrow Airport provides a couple of lounges for complimentary food and beverages, in addition to a spa where you can receive a massage or beauty treatment. Club Aspire Lounge has a location in Terminal 5, while Plaza Premium Lounge offers hospitality at Terminals 2 and 5. Be Relax Spa has two locations at Terminal 5A and 5B.
  • Bypass the crowds at London Heathrow Airport security screening checkpoints with a fast-track security pass, which you can purchase online for about £12.50 per person. The pass gives you access to a dedicated lane at each terminal building so you reach the airside concourses in less time.
  • Passengers travelling with children at London Heathrow Airport should know that kids in your company aged under 15 can travel free aboard the Heathrow Express. Baby changing facilities can be found landside (before security) and airside (after security) in each terminal, and you can find Stay & Play Areas at Terminals 2–5. There’s also a Kids Eat Free programme hosted by several airport restaurants.
  • Heathrow Airport (LHR) provides dedicated children's play areas across different terminals to entertain young travellers. Terminal 2 features the "Stay & Play" area, Terminal 3 offers a family lounge with play facilities, Terminal 4 has a soft play area, and Terminal 5 boasts a Kids Zone with interactive play equipment, ensuring a child-friendly experience throughout the airport.
  • The most budget-friendly and convenient way to get to London Heathrow (LHR) from the city centre is to head to Paddington Station and jump on the express train. This leaves every 15 minutes and takes about the same time to get to the airport.

Prefer to fly direct from London Heathrow Airport to Washington Dulles Airport?

 
Find which airlines fly direct from London Heathrow Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

London Heathrow to Washington, D.C. Dulles Intl

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to London Heathrow

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

More options for your flight from Heathrow to Dulles Intl

Complete your trip to Dulles Intl with a hotel stay or car hire