BA's Premium Economy offers more space and peace with wider seats and extra legroom.
BA's Club World offers business class with lie-flat seats on long-haul flights.

Planning a trip from Dulles Intl to Heathrow? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
Based on the data, the cheapest day of the week to fly from Washington Dulles Airport to London Heathrow Airport is typically Wednesday. The cheapest month to fly this route is generally November.
Book Early: Tickets are generally cheaper when booked around 113 days in advance.
Cheapest Airline: Icelandair typically offers the cheapest flights for this route.
Layovers: It's usually cheaper to fly with one stop than direct.
Cheapest Route: The cheapest route is typically from Washington Dulles Airport to London Heathrow Airport.
This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK.
| Low season | February |
|---|---|
| High season | July |
| Cheapest flight | $257 |
Direct departures
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
Direct returns
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
Great staff great experience, made a 2 hour delay very bearable
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
Great crew - old style upper class seats on the older fleet now feels dated
Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.
Food was excellent. Service was very good. Staff was very helpful to all passengers.
During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.
Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.
Great service on board. Boarding a bit slow due to process. Food was pretty average.
Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5
Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .
Staff was rude. Didn’t give water for 2 hours. Worst service
Was on time until within 1 hour of flight-how does that happen? Staff very friendly.
I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.
Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United
We were given vouchers we couldn’t use with a 5.5 hour delay
Disliked having to wait a little longer to disembark from the plan when we landed in London
Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.
The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.
My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.
Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes
Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.
The flight was canceled 3 hours after original take off time
Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.
Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.
More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy
The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0
The seats are so small that you can barely move at all. Don't try to eat with utensils in your seat either - you will elbow your neighbor in the face. Miserably small and I swear they are shrinking every time I fly. Food was meh (per usual), but at least there is free alcohol on an overseas flight. Doesn't make up for sitting in a torture chamber while hurtling through the air with hundreds of fussy people, but it's something. Entertainment options (movies, shows) are okay, nothing special, but at least there are screens, because most of the seats in these large planes do not have adjustable lighting - or air control - that you can get to, it's too high to reach - which makes reading impossible. Zero stars, AA.
Terrible customer service. I booked business class and the counter agent didn’t bother asking me about any choice or preferred seat, basically assigned me that last seat and couldn’t even answer if it was a business class seat. Also iberia lost my suitcase on my flight from JFK to MAD with the layover in BCN. Useless customer service at the counter. Thank goodness I happened to check the baggage claim area of the next flight in…there it was.
Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.
We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.
The crew were friendly and helpful. Iberia lost our luggage on arrival, Friday and we didn't get it until Sunday at 10:00 p.m. local Malaga time. I also paid $382.80 for seat assignments but two out out of the four were not together. Iberia mentioned that it was because the plane was delayed in Madrid before our flight began in LAX. They should compensate us half of my payment.
It was fortunate that the flight arrived in London in accordance with schedule, and the luggage was promptly transferred to the luggage carousel. However, I find it concerning that even minor issues in economy cabins are prevalent within the industry. American Airlines, in particular, appears to have the least legroom and feels more crowded due to the proximity of neighboring passengers. Additionally, the crew’s adherence to protocol is inconsistent. While they may enforce certain rules set by the FAA on a select few individuals, they often overlook numerous violations, such as failing to reset seat recline during landing.
Easy and organized getting in and out of the flight
We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.
The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.
Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.
Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.
The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.
The flat beds. Other than that, the place was not clean.
Moved me away from my family and refused to fix it.
I have always been pleased with their service. Would not change a thing
Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .
Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.
I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!
Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.
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