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IAD - LHR

Find cheap flights from Washington Dulles Airport to London Heathrow Airport from £189

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Heathrow departing on 1/8. 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
0 bags
Sat 27/4
Sat 4/5

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to London.
In the last 7 days, travellers have searched 46,342,885 times on KAYAK, and here's why:

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Cheap flight deals from Dulles Intl to Heathrow

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Heathrow 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 and deals for you by selecting your travel dates.
Choose your dates
18:50 - 18:30IAD-LHR
18h 40m2 stops
07:15 - 17:40LHR-IAD
15h 25m1 stop
Mon, 15 Apr - Sat, 27 Apr
18:50 - 21:35IAD-LHR
21h 45m2 stops
07:55 - 17:40LHR-IAD
14h 45m1 stop
Mon, 15 Apr - Mon, 29 Apr
18:50 - 18:30IAD-LHR
18h 40m2 stops
07:55 - 17:40LHR-IAD
14h 45m1 stop
Mon, 22 Apr - Mon, 29 Apr
12:21 - 08:05IAD-LHR
14h 44m1 stop
17:30 - 20:25LHR-IAD
7h 55mdirect
£436Virgin Atlantic
Find Deal
Tue, 23 Apr - Tue, 30 Apr
17:50 - 09:00IAD-LHR
10h 10m1 stop
06:30 - 16:00LHR-IAD
14h 30m1 stop
£452Virgin Atlantic
Find Deal
Wed, 17 Apr - Tue, 23 Apr
22:25 - 10:40IAD-LHR
7h 15mdirect
12:05 - 16:15LHR-IAD
33h 10m1 stop
£507United Airlines
Find Deal
Mon, 23 Sep - Mon, 30 Sep
22:05 - 10:40IAD-LHR
7h 35mdirect
09:30 - 16:05LHR-IAD
11h 35m1 stop
£509Lufthansa
Find Deal
Wed, 24 Apr - Wed, 1 May
12:30 - 06:30IAD-LHR
13h 00m2 stops
13:45 - 16:15LHR-IAD
31h 30m1 stop
£511United Airlines
Find Deal
Wed, 17 Apr - Wed, 24 Apr
18:30 - 06:45IAD-LHR
7h 15mdirect
09:30 - 16:05LHR-IAD
11h 35m1 stop
£515Lufthansa
Find Deal
Sun, 8 Sep - Wed, 18 Sep
17:55 - 06:15IAD-LHR
7h 20mdirect
17:25 - 20:30LHR-IAD
8h 05mdirect
£520British Airways
Find Deal
Sun, 22 Sep - Wed, 2 Oct

Flights from Dulles Intl to Heathrow - Travel Insights & Trends

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

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

The average price of all flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Washington Dulles Airport to London Heathrow Airport, look for departures on Thursdays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from London Heathrow Airport, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, 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 Washington, D.C. Dulles Intl Airport to London Heathrow Airport is February, where tickets cost £482 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is £898 and £823 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 19 days before departure.

Which airlines provide the cheapest flights from Washington Dulles Airport to London Heathrow Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Icelandair (£189) and SWISS (£246). The cheapest round-trip tickets were found on Aer Lingus (£390) and Delta (£428).

Which airlines fly most frequently between Washington Dulles Airport and London Heathrow Airport?

British Airways connects Washington Dulles Airport to London Heathrow Airport with up to 3 flights per day. United Airlines also offers 2 flights per day, while Virgin Atlantic follows with 2 flights per day.

Which airlines fly direct between Washington, D.C. Dulles Intl Airport and London Heathrow Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.
There are 3 airlines that fly direct from Washington, D.C. Dulles Intl Airport to London Heathrow Airport. They are: British Airways, United Airlines and Virgin Atlantic. The cheapest price of all airlines flying this route was found with United Airlines at £453 for a one-way flight. On average, the best prices for this route can be found at Virgin Atlantic.

How many flights are there between Washington, D.C. Dulles Intl Airport and London Heathrow Airport per day?

Each day, there are between 7 and 8 nonstop flights that take off from Washington, D.C. Dulles Intl Airport and land in London Heathrow Airport, with an average flight time of 7h 20m. The most common departure time is 22:00 and most flights take off at night. Each week, there are 53 flights. The most frequent day of departure is Saturday, when 15% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and London Heathrow Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Washington Dulles Airport to London Heathrow Airport take?

A direct flight to London Heathrow Airport will take on average 7h 15m to travel the 3,664 miles flying distance from Washington Dulles Airport.

What’s the earliest departure time from Washington Dulles Airport to London Heathrow Airport?

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 17:55 and will be landing in London Heathrow Airport at 06:15.

What’s the latest departure time from Washington Dulles Airport to London Heathrow Airport?

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport jets off at 22:50 and lands at 11:10.

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

Low season

February

High season

July

Cheapest flight

£189
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (34% more expensive on average)
Flight from Washington Dulles Airport to London Heathrow Airport

When to book flights from Dulles Intl to Heathrow

Are your dates flexible? Find out the best times to travel from Dulles Intl to Heathrow 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 Washington Dulles Airport to London Heathrow Airport flights

  • What accessibility services are there at Dulles Intl Airport?

    To cater to travelers with limited mobility and disabilities, Dulles Airport offers a wide range of accessibility services. These include elevators with Braille signage and self-voicing announcements, wheelchair access, a pet relief area for service or companion dogs, public restrooms with disability access, and assisted security screenings.

  • Are there nonstop flights from Dulles Intl to London-Heathrow Airport?

    Passengers wishing to fly from Washington, DC, to London can get nonstop flights from several airlines, including Lufthansa. Other nonstop flights are operated by multiple airlines, although the tickets come at a higher price. Most flights operated by American Airlines, Finnair, Icelandair, Delta Air Lines, and Virgin Atlantic have one- or two-stop flights. Depending on the airline, you may board your connecting flight in Keflavik, Dallas, Chicago, Helsinki, Boston, or Atlanta.

  • Are there airport hotels at London-Heathrow Airport?

    There are hotels located right within Heathrow Airport. They include the Hilton Garden Inn Airport Hotel, situated right next to Terminal 2 and a few minutes walk to Terminal 3. Alternatively, you can choose to stay at the Aerotel London Heathrow situated near Terminal 2 and 3. Other hotels within a comfortable walking distance include the Novotel London Heathrow Airport T1 T2 and T3, Ibis Styles London Heathrow Airport, Radisson Blu Edwardian Heathrow Hotel, and more.

  • How can I get from Heathrow Airport to the London city center?

    You can get from London-Heathrow Airport to the city center by train. You can board a train from Heathrow Central Station, located about 5min from terminals 2 and 3. You can get train tickets at the automated ticketing machines or booking office at the station. Trains from the airport arrive in the downtown area at Paddington Station after about 15min.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport was £238 for a one-way ticket and £477 for a return.

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

    On your way to London Heathrow Airport, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at London Heathrow.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to London are KLM and Virgin Atlantic. With an average price for the route of £600 and an overall rating of 7.8, KLM is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £590 and an overall rating of 7.7.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Washington Dulles 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 Washington Dulles Airport to London Heathrow 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 London Heathrow Airport with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to London Heathrow 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 London Heathrow Airport from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Washington Dulles Airport to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to Washington Dulles Airport? 25% of our users found flights on this route for £368 or less one-way and £520 or less round-trip.
  • You can get to Dulles International Airport (IAD) from downtown Washington, DC, by car, bus, or train. If you require quick access to the airport, we recommend taking the train. A train ticket goes for about $11 and is a great way to avoid traffic.
  • Do you have a flight departure and want to return your rental car to one of the rental car companies at Dulles Intl Airport (IAD)? Follow the "Rental Car Return" signs at the airport, which lead to Autopilot Dr. Here, you'll find the rental car parking lots. Your rental company's shuttle bus should take you to the terminal.
  • If you feel like relaxing after touching down in London, you can access VIP services from one of the Heathrow (LHR) lounges. They include the Plaza Premium Lounge in Terminal 4, which charges around £27.45 ($38), the Club Aspire Lounge in Terminal 3, which charges approximately £27.45 ($38), and the Sky Team Lounge in Terminal 4, which charges around £31.39 ($43.50).
  • Pet lovers can travel with their pets from Washington, DC. The airport has pet relief areas outside the terminal building, right after security, and another one inside the concourses. If you plan to travel with your pet in the cabin or send him as baggage, we recommend that you contact your airline in advance.
  • Washington, DC/London air route is popular among business travelers. London Heathrow Airport is located about 14 miles from London city, offering easy access to business-centric points of interest like the Royal Horticultural Halls and the Excel Business Expo Center.
See more tips

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

Find which airlines fly direct from Dulles Intl to Heathrow, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to London Heathrow

Monday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Tuesday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Wednesday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Thursday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Friday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Saturday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Sunday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

See more direct flights

Direct returns

London Heathrow to Washington, D.C. Dulles Intl

Monday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Tuesday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Wednesday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Thursday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Friday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Saturday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

Sunday

Aer Lingus, Air Canada, Air France, +13 more

Aer Lingus, Air Canada, +14 more

See more direct flights
See more direct flights

Top 5 airlines serving from Dulles Intl to Heathrow

Need help choosing which airline to fly with from Dulles Intl to Heathrow? 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 KAYAK reviews.
7.8
KLMOverall score based on 1684 reviews
73entertainment
73food
78boarding
84crew
76comfort
79overall
Airline reviews

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Read more about KLM

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Seats are fair enough for medium tall people. Good food all the trip. Fight attendances are warm

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

Mostly fine. Minor delays departing and arriving. Quite a cramped plane, not so much as regards legroom but very narrow seats. Quiet nice food. Non-working USB charger. Flight attendants were helpful but not particularly proactive — one had to work to get their attention (but all was fine once they notice you), very Dutch style:)

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

One of their staff was so rude with discriminative. Such a reputed airline shouldn't hire such kind of arrogant attendants.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

one of my bags was drenched with fish smelling water and all my new clothes bought at dublin and the 23kg checked in bag were all gone waste with very pungent fish smell and also having stains

At the transit could be less time not like 12 hour 6 hours the mix should be 4 hour, thanks

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meeting was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast.

We originally had a window seat. Our seats were changed to the center isle between 2 bathrooms. This was a red eye flight and we were traveling with an infant. Due to the light from the bathroom doors opening and closing throughout the night our infant would not sleep and cried the whole night which kept us awake and everyone around us. It was a very unpleasant experience for everyone trying to sleep.

Tai-City to Atlanta :Lots of legroom on the flight. No interaction from the staff at all on the plane. They only attended to the First Class passengers. There was no entertainment. Security I was body scanned even though I hadn't set off an alarm, my father-in-law in his 80s, was stopped and subjected to a through body search, told that they would have to place their hands in intimate places. There were several border guards present, and as we walked off we could hear the TWA officer talk about the procedure as if he was training. My father-in-law was a little upset about the whole process. A kind explanation that training was taking place would have been more acceptable, and it felt dehumanizing to him. Atlanta to London: Check in was difficult we had been unable to do this online for 2 of the family members on the same booking both in their mid to late-80s. No seats had been allocated for them and we were all travelling Premium Economy. After several phone calls to the booking agent and conversations with Delta staff at TriCites airport, we were told that seats would be allocated at the gate in Atlanta. When we arrived at Atlanta, and spoke to a member of the boarding staff at the gate, he was curt and repeated back exactly what we had just told him, that only one of us was checked in. I explained that we had been unable to check-in online for the 2 family members (I had tried twice). He again repeated back that we needed to check-in. As we were in transit, I was at a loss at what he wanted us to do, but he kept repeating that we needed to do this. I asked where we should do this. No answer. In fact all he did throughout was look at his screen. He told us that there were no seats in Premium Economy, and that he could offer my parents-in-law 'two seats at the back'. I asked if he meant at the back of Premium Economy, and he replied, 'No, at the back of the plane'. At this point, myself and my father-in-law pointed out that they had paid for Premium Economy tickets and expected seats there. He never took his eyes off the screen once. Then he hit a button and it printed out two boarding passes for my parents-in-law. The seats were directly across from my seat. He had gone from saying there were no seats to somehow finding two together. No explanation, no eye contact, nothing. The flight: As we boarded, our first introduction to the flight was the stewardess at the entrance addressing a passenger with an annoyed and loud voice about a bag that belonged to them. That was not promising. The seats were good, and so were all the accessories. The food, etc.: we had flown with Virgin on our outward journey and I could not fault it. The service and food was excellent, the stewards very helpful, offering additional drinks and snacks. The toilets were more accessible than Delta, which were in the economy area and were told in no uncertain terms that we should not use the First Class toilets, even though they were much closer to our section of the plane. We had a menu for both flights, yet when I asked for the chicken dish on Delta, I was told that there was none left and that there was another chicken dish with mashed potatoes and that 'it was fine'. This was almost pushed on me before I could answer. I was sitting 3 rows from the front of the section, so I was surprised that they had already run out. I repeated that I would like the chicken dish on the menu, and asked whether she would be able to get one from her colleague who was serving in the other aisle. The stewardess replied 'No, that's not how it works!' It always has on previous flights, so I was a bit confused. I accepted that I would have to opt for the pasta option (no choice), but was a little perturbed by her response. Minutes later she returns and hands me the chicken dish I had originally asked for. I had already started eating the other one, but was told curtly that I could have both. This was the same stewardess who was shouting at a passenger as we boarded the plane. The food was very poor in the end, nowhere near as good as Virgin's. Unlike Virgin, there was no starter, no bread roll, just a main and a brownie served in a cardboard container. Virgin had provided real china and glass. Unlike Virgin, they did not return to ask if we wanted more drinks, and there was no tea or coffee served after the meal. The breakfast that was served later was equally poor and inedible, apart from the fruit. At the time, the stewardess, a different one, completely walked past my mother-in-law and did not offer her a hot drink. Both my parents-in-law are in their mid to late 80s, they have been world travellers in their time and had decided that this would be the last flight that they ever take. They have health problems, including memory issues. I feel that overall the journey back to London was pretty unpleasant for them especially, and that they were treated badly, especially by the ground staff. We have lived on two continents and are used to long haul flights, and I have to say that this is up there in the worst flight category. Bearing in mind that we had paid extra money expecting comfort and additional attention, it was extremely disappointing. I would fly Virgin again, but never Delta. The two flights were incomparable.

Lots of legroom on the flight. No interaction from the staff at all on the plane. They only attended to the First Class passengers. There was no entertainment. Security I was body scanned even though I hadn't set off an alarm, my father-in-law in his 80s, was stopped and subjected to a through body search, told that they would have to place their hands in intimate places. There were several border guards present, and as we walked off we could hear the TWA officer talk about the procedure as if he was training. My father-in-law was a little upset about the whole process. A kind explanation would have been more acceptable, and it felt dehumanizing to him.

Needed a 6 hour lay over in Atlanta. How can this be avoided ?

Security area in terminal 3 needs to be made much nicer. Less claustrophobic and use of glass and big ceilings wouldhelp

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The crew were really great, but the 4 hour delay in small chunks was the worst.

Very bad , airplain had problem with engines , had to evacuate, had a delay on my trip for almost 4 hours , lost my rental car in london..

All good, useful to have the united app from check in to boarding

Every experience was good except for the lack of comfort in those economy seats. I never had knee pain until that flight. Those seats are uncomfortable.

United domestic flight was better than international flight. There was no switch to control Ac In international united flight. Food was also average,

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

The flight was clean and on time, the crew were all very nice and we got the seats we booked. Plenty of food and beverages. The seats are too close so it’s very difficult to try and sleep comfortably.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

I'm Canadian. I have the unfortunate experience of pretty not having the choice to fly with them. THEY ARE TERRIBLE.

The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).

You only get a chocolate square and small bottle of water.!

to be bussed around the airport, then have to sit on the plane for an hour whilst the plane was deiced not once, but twice, then to have to wait for a tug driver is unacceptable. The Captain was very good at communicating.

Terrible. This airline will cancel flights at very short notice.

United tried to bump me. We pay good money to get on the plane we are scheduled to ride in. To hell with United Airlines.

United was great. We were a bit delayed taking off but in the end only got to Frankfurt slightly behind schedule.

Overall good experience, just the delay of 2.5 hrs was a bummer.

We were unable to select our seats (wanted window seats) when checking in online. Assigned seats were very uncomfortable.

There was no entertainment for complete journey it was terrible experience

The flight was delayed numerous times with inconsistent updates and very ambiguous information. When it was finally cancelled the logistics of handing out vouchers and rebooking was extremely chaotic. Meal vouchers were completely inadequate for the airport restaurants, and not even accepted at some. All-in-all, it was a very disappointing experience.

Terrible. The flight from Islamabad to London took 3 hours more then previously planned, I missed my connection to Chicago, and instead had to go New York, spend an extra day before arriving at my final destination. The return leg of the journey was similar. The connection time in Qatar was shrinked to less then an hour unannounced, I had to scramble to barely make it to my flight to Islamabad. Terrible experience, never using British airways again.

The crew on this flight were attentive, efficient and friendly. It really made for an enjoyable flight.

They canceled my flight , they put me on a different flight that was delayed and the connection was lost . They lost my luggage. And now I’m stuck with any of my belongings.

British Airways canceled our plane and gave us a new flight scheduled to leave in only three hours, so we had to drop everything and rush to the airport. The new itinerary only left us a one hour layover in Madrid, which was too short because the plane landed late and so we missed our connecting flight. We were then booked onto a flight scheduled to take off 8 hours later, and were not given any compensation or remedial measures.

Seat layout, flight/club attendant service, food variety and quality could have been better. Business class Standard is visibly low compared with 6 other airlines that we have traveled for the past two years.

Despite many attempts to work out a change, neither British Airways nor Kayak nor Chatdeal would allow us to cancel or change this flight so we lost all of the payments when we were not able to fly. Absolutely terrible customer service. We will never use either of the services again.

It said that there was wifi. During the flight there was no wifi and while waiting at the gate the phone services already got cut off so I wasn’t able to say I am taxiing from the gate to my husband. This left me with an uncomfortable feeling. So I was waiting on the WiFi connection during flight and that never happened.

Asked for a wheelchair multiple times. Got denied the wheelchair in London layover.

They sell 1h /1h30min connection ticket that are impossible to make

Book cheap flights from Washington, D.C. to London

Cheapest flights to London from Washington, D.C. found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to London found on KAYAK in the last 72 hours.
1/8Thu
1 stopIcelandair
10h 25mIAD-LHR
£189
1/8Thu
1 stopIcelandair
10h 25mIAD-LHR
£193
8/7Mon
1 stopIcelandair
10h 25mIAD-LHR
£195
15/7Mon
1 stopIcelandair
10h 25mIAD-LHR
£196
10/4Wed
1 stopLufthansa
16h 40mIAD-LHR
£301
29/4Mon
directLufthansa
7h 35mIAD-LHR
£352
10/4Wed
directVirgin Atlantic
7h 15mIAD-LHR
£354
8/7Mon
directBritish Airways
7h 20mIAD-LHR
£363
8/7Mon
directBritish Airways
7h 20mIAD-LHR
£364
10/4Wed
2 stopsUnited Airlines
17h 23mIAD-LHR
£368

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Last minute flights from Dulles Intl to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to London that are departing in the next 10 days.
1/4Mon
multi-stopScandinavian Airlines
17h 45mIAD-LHR
8/4Mon
multi-stopScandinavian Airlines
25h 45mLHR-IAD
£382
2/4Tue
multi-stopScandinavian Airlines
19h 25mIAD-LHR
11/4Thu
multi-stopScandinavian Airlines
13h 45mLHR-IAD
£388
30/3Sat
directVirgin Atlantic
7h 11mIAD-LHR
16/4Tue
multi-stopVirgin Atlantic
12h 20mLHR-IAD
£598
30/3Sat
directVirgin Atlantic
7h 11mIAD-LHR
16/4Tue
directVirgin Atlantic
7h 55mLHR-IAD
£600
31/3Sun
directUnited Airlines
7h 15mIAD-LHR
10/4Wed
multi-stopUnited Airlines
12h 35mLHR-IAD
£605
2/4Tue
directBritish Airways
7h 20mIAD-LHR
11/4Thu
directBritish Airways
8h 05mLHR-IAD
£643
29/3Fri
directLufthansa
7h 10mIAD-LHR
16/4Tue
multi-stopLufthansa
11h 35mLHR-IAD
£646
29/3Fri
directLufthansa
7h 10mIAD-LHR
16/4Tue
directLufthansa
8h 05mLHR-IAD
£658
1/4Mon
directUnited Airlines
7h 15mIAD-LHR
9/4Tue
multi-stopUnited Airlines
33h 10mLHR-IAD
£711
30/3Sat
multi-stopBritish Airways
10h 33mIAD-LHR
6/4Sat
multi-stopBritish Airways
13h 25mLHR-IAD
£735

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Washington Dulles Airport - London Heathrow Airport Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Washington Dulles Airport

Cabin classes:

£4,979
£1,663
£1,312
£458