LHR - WAS

£295 Find Cheap Flights from London Heathrow Airport to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Washington, D.C. departing on 19/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C..
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C..
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Everything you should know

Cheapest return fare
£419
Typical prices: £676-£503
British Airways
Fri 22/5Tue 9/6
LHR - IAD • Direct
Cheapest one-way flight
£295
Typical prices: £581-£709
Multiple Airlines
Tue 19/5
LHR - BWI • 2 stops
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Virgin Atlantic's Economy Delight offers additional legroom.
The Silver Line Metro connects Dulles to downtown D.C.
Expert advice
Expert advice
Expert advice
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Top airlines
Cheapest • from £419 (return)
Best reviews • 7.6 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with British Airways, United Airlines, and Virgin Atlantic. Average duration is 8h 19m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 1% average savings
Most popular
Insights
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Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
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Top stopover airports
Cheapest • Avg £435 (return)
Shortest trip • 11h 03m (one-way)
Insights
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When to book
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 34% compared to booking last minute.
Insights
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When to travel
Cheapest • 57% price drop
Most popular
Good to know
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+1
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+1
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Flight Deals

Cheap Flights from Heathrow to Washington, D.C. (LHR-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Washington, D.C.

Fri, 22 May - Tue, 9 Jun
British Airways Logo
14:00 - 17:25
LHR
-
IAD
8h 25mdirect
British Airways Logo
17:40 - 06:20
IAD
-
LHR
7h 40mdirect
£419British Airways
Fri, 22 May - Thu, 4 Jun
British Airways Logo
14:00 - 17:25
LHR
-
IAD
8h 25mdirect
British Airways Logo
22:25 - 10:50
IAD
-
LHR
7h 25mdirect
£419British Airways
Fri, 5 Jun - Tue, 9 Jun
British Airways Logo
17:05 - 20:20
LHR
-
IAD
8h 15mdirect
British Airways Logo
19:20 - 07:45
IAD
-
LHR
7h 25mdirect
£420British Airways
Sat, 30 May - Sun, 31 May
United Airlines Logo
14:10 - 07:44
LHR
-
IAD
22h 34m
1 stop
United Airlines Logo
22:29 - 21:35
IAD
-
LHR
18h 06m
1 stop
£422United Airlines
Tue, 6 Oct - Tue, 13 Oct
Icelandair Logo
13:05 - 19:20
LHR
-
IAD
11h 15m
1 stop
Icelandair Logo
20:30 - 20:20
IAD
-
LHR
18h 50m
1 stop
£423Icelandair
Wed, 7 Oct - Sun, 11 Oct
Icelandair Logo
13:05 - 22:15
LHR
-
IAD
14h 10m
1 stop
Icelandair Logo
20:30 - 11:55
IAD
-
LHR
10h 25m
1 stop
£424Icelandair
Mon, 17 Aug - Wed, 16 Sep
United Airlines Logo
12:15 - 15:30
LHR
-
IAD
8h 15mdirect
United Airlines Logo
06:15 - 21:25
IAD
-
LHR
10h 10m
1 stop
£425United Airlines
Sun, 30 Aug - Tue, 8 Sep
American Airlines Logo
13:00 - 21:30
LHR
-
DCA
13h 30m
1 stop
American Airlines Logo
06:00 - 21:40
DCA
-
LHR
10h 40m
1 stop
£430American Airlines
Fri, 24 Jul - Mon, 31 Aug
Finnair Logo
16:25 - 19:40
LHR
-
BWI
8h 15mdirect
Finnair Logo
21:30 - 09:50
BWI
-
LHR
7h 20mdirect
£487Finnair
Wed, 8 Jul - Wed, 15 Jul
Finnair Logo
16:25 - 19:40
LHR
-
BWI
8h 15mdirect
Finnair Logo
21:30 - 09:50
BWI
-
LHR
7h 20mdirect
£491Finnair
Booking Insights

KAYAK’s insights & trends for Heathrow to Washington, D.C. flights

Get data-powered insights and trends into flights from Heathrow to Washington, D.C. 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.?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Washington, D.C. departing in May.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London Heathrow Airport to Washington, D.C. costs £438 on the route between London Heathrow Airport (LHR) and Baltimore (BWI). Over the past month, this route was, on average, 1% cheaper than other London Heathrow Airport-Washington, D.C. routes. The most popular route is between London Heathrow Airport (LHR) and Washington, D.C. Dulles Intl Airport (IAD).

What’s the cheapest day of the week to fly from London Heathrow Airport to Washington, D.C.?

The average price of all round-trip flights from London Heathrow Airport to Washington, D.C. clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington, D.C. on a Wednesday and more expensive on a Sunday. On your return trip to London Heathrow Airport, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Washington, D.C. is January, where tickets cost £261 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is £924 and £842 respectively.

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

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £516, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport to Washington, D.C., you should book around 6 weeks before departure, which saves you about 34% 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 Washington, D.C.

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
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.

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.

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, D.C.

Low seasonFebruary
Cheapest flight£295
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from London Heathrow Airport to Baltimore

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

Are your dates flexible? Find out the best times to travel from Heathrow to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Washington, D.C. flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Washington, D.C. was £295 for a one-way ticket and £419 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Washington, D.C.?

    London Heathrow Airport is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave London Heathrow Airport from London Heathrow and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from London Heathrow Airport to Washington, D.C.?

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

  • Which aircraft models fly most regularly from London Heathrow Airport to Washington, D.C.?

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

  • Which airline alliances offer flights from London Heathrow Airport to Washington, D.C.?

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

  • On which days can I fly direct from London Heathrow Airport to Washington, D.C.?

    There are direct flights from London Heathrow Airport to Washington, D.C. on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from London to Washington, D.C. are Austrian Airlines and Virgin Atlantic. With an average price for the route of £577 and an overall rating of 7.6, Austrian Airlines is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £550 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Washington, D.C.?

    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, D.C..

  • 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, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. 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, D.C.?

    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, D.C. 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, D.C.?

    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, D.C. 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.

  • Looking for a cheap flight from Washington, D.C. to London Heathrow Airport? 25% of our users found flights on this route for £582 or less one-way and £510 or less round-trip.

Prefer to fly direct from London Heathrow Airport to Washington, D.C.?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London Heathrow to Washington, D.C..
Find which airlines fly direct from London Heathrow Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

London Heathrow to Washington, D.C.

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. 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

Reviews of the top 5 airlines flying from Heathrow to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from London to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Austrian AirlinesOverall score based on 911 reviews
6.8Food
8.1Crew
7.3Comfort
7.6Boarding
6.8Entertainment
Airline reviews

Last few years I didn't not have great experience with United Airlines.

2.0 MediocreAnonymous, Apr 2026
IAD - PHX
Read more Austrian Airlines reviews

Last few years I didn't not have great experience with United Airlines.

Short flight. Bare bones and kinda seeming like an older plane. But got me there on time and that's what counts. Perfectly fine flight all the way from start to finish.

My Austrian Air flight from Montenegro to Vienna was delayed by three hours because their plane de-icer was broken and they had to wait for the sun to come up before the ice could melt. This meant we missed our United flight altogether. So I can't speak about United, but I was not impressed by Austrian Air. They made us check in two carry on bags for a 60% full flight, and the bags didn't find us in the US for ten days. The re-routing they arranged included an extra leg, a midnight taxi ride across New Jersey and New York, and a five hour sleep in a hotel. Not impressed.

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

Excellent flight. The crew was exceptionally attentive and organized. Attention to details is unmatched.

Loved the courtesy and punctuality. Very professional and most importantly on time.

Great! They got my vegetarian meal right, flight was comfortable, they helped store my heavy luggage. Pleasant crew and flight staff.

I did wish they would give us the entire little bottle Bailey's instead of just have 1/2 bottle at a time

Very limited legroom in a 10 hour flight.very old plane.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

First time flying with UA and it was a great experience. Thank you

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

Lufthansa flight LH04414 from Munich to Washington DC, was fine. Efficient and safe!

Bumpy ride, not Lufthansa‘s fault. Crew managed a situation over a back rest to far down well. It was two iles behind me. The person putting the seat down, against the other person’s knees, was quite rude and belligerent and needed to be told in a no nonsense matter to stopp. Male flight attendant did good job.

Had a few open seats and could use it for a great rest ful journey

It was very good. Service was friendly and efficient, and food was good.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

We left 1.5 hours late therefore missing my connection. The airline didn’t give vouchers.

Food could have something without dairy, I couldn't eat anything. Tv for both seats was malfunctioning. They have one bottle of ginger ale for entire plane.... and I paid extra for these seats...very disappointed

We took two long flights with Lufthansa, both were delayed making us miss our connecting flights. Lufthansa took care of the first one. The second was a switch to United and figuring out how to rebook was not a pleasant experience.

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

The crew has always been great on BA. They are very friendly and accommodating. I like that they have vegetarian options already in the menu. And the free wine is a nice perk.) I noticed (both directions of my trip) minor upgrades/ replacements needed on the plane itself (touch screen didn't work with touch; bathroom light didn't go on). However, this is one of my favorite airlines.

Everything was spectacular except the boarding. It was just a mob of people while all groups were called over the public address system.

The Britts are wonderful to fly with and the crew were very hospitable. Again, I really wish they had been able to retrieve my carryon bag from baggage claim before the flight so I could be in a less worrisome state of mind, but that's not on them. I completely understand. The window seats with the dimmable windows were very cool!

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

food options were terrible. for a 10-hour flight, there should be 2 decent meals. Also, flight attendants should come around with drinks more than just at the meals.

Everything you need to know for your flight from Heathrow to Washington, D.C.

Information on your arrival and departure airports