$270 Find Cheap Flights from United Kingdom to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Dulles Intl departing on 8/27. 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

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These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, D.C.
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Cheap Flights from the United Kingdom to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from the United Kingdom to Dulles Intl 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 round-trip flight deals from the United Kingdom to Dulles Intl

Sat, Sep 27 - Sun, Sep 28
United Airlines Logo
2:05 pm - 7:32 amLHR-IAD
22h 27m2 stops
United Airlines Logo
9:35 am - 6:30 amIAD-LHR
15h 55m1 stop
$478United Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
TAP AIR PORTUGAL Logo
10:35 am - 8:50 pmLGW-IAD
15h 15m1 stop
TAP AIR PORTUGAL Logo
6:30 pm - 3:45 pmIAD-LGW
17h 15m1 stop
$481TAP AIR PORTUGAL
Find Deal
Thu, Sep 11 - Thu, Sep 18
Aer Lingus Logo
8:10 am - 6:55 pmBHX-IAD
15h 45m1 stop
Aer Lingus Logo
8:25 pm - 7:45 pmIAD-BHX
18h 20m1 stop
$552Aer Lingus
Find Deal
Fri, Sep 12 - Fri, Sep 19
Aer Lingus Logo
8:10 am - 3:50 pmMAN-IAD
12h 40m1 stop
Aer Lingus Logo
8:25 pm - 4:50 pmIAD-MAN
15h 25m1 stop
$594Aer Lingus
Find Deal
Fri, Sep 12 - Fri, Sep 19
Virgin Atlantic Logo
9:20 am - 3:35 pmLCY-IAD
11h 15m1 stop
Virgin Atlantic Logo
5:25 pm - 9:30 amIAD-LCY
11h 05m1 stop
$674Virgin Atlantic
Find Deal
Wed, Sep 10 - Wed, Oct 1
Virgin Atlantic Logo
7:45 am - 3:35 pmLCY-IAD
12h 50m1 stop
Virgin Atlantic Logo
12:08 pm - 9:30 amIAD-LCY
16h 22m2 stops
$687Virgin Atlantic
Find Deal
Wed, Nov 26 - Wed, Dec 3
British Airways Logo
8:45 am - 3:35 pmEDI-IAD
11h 50m1 stop
British Airways Logo
6:20 pm - 9:30 amIAD-EDI
10h 10m1 stop
$707British Airways
Find Deal
Mon, Sep 8 - Tue, Sep 16
British Airways Logo
7:35 pm - 3:00 pmEDI-IAD
24h 25m2 stops
British Airways Logo
10:40 pm - 9:30 pmIAD-EDI
17h 50m1 stop
$735British Airways
Find Deal
Wed, Nov 26 - Wed, Dec 3
Delta Logo
5:45 am - 4:05 pmEDI-IAD
15h 20m1 stop
Delta Logo
12:30 pm - 10:40 amIAD-EDI
17h 10m2 stops
$737Delta
Find Deal
Mon, Aug 25 - Mon, Sep 8
Delta Logo
6:00 am - 3:35 pmGLA-IAD
14h 35m1 stop
Delta Logo
8:23 pm - 4:10 pmIAD-GLA
14h 47m2 stops
$739Delta
Find Deal
Booking Insights

KAYAK's insights & trends for flights to Dulles Intl

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

What is the cheapest flight to Washington Dulles Airport?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Washington Dulles Airport was found on the route from London, at $478 return. The most popular connection is from London to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $478 in the last 3 days.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Washington, D.C. Dulles Intl 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 to Washington, D.C. Dulles Intl Airport is March, where tickets cost $677 on average for return flights. On the other hand, the most expensive months are July and December, where the average cost of tickets from the United Kingdom is $939 and $906 respectively. For one-way flights, the best month to travel is February with an average price of $749.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

If you’re looking for cheap airfare to Washington, D.C. Dulles Intl Airport, 25% of our users found tickets to Washington, D.C. Dulles Intl Airport for the following prices or less: From London Heathrow Airport $752 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, D.C. Dulles Intl Airport, 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, you should book around 4 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.


Good to know

Low seasonJanuary
Cheapest flight$270
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from London Gatwick Airport to Washington Dulles Airport

FAQs - booking Washington Dulles Airport flights

  • How do I get to Ronald Reagan Washington Airport from Dulles International Airport?

    Ronald Reagan Washington National Airport (DCA) is located at a distance of 26.7 miles from Dulles International Airport. You can expect the journey by car to take you approximately 30min via VA-2673 and I-66 E. Alternatively, you can expect public transport to take 1h 10min. Catch the Silver Line on the Washington Metro, where a ticket will cost you approximately $2.50 (£1.75).

  • Where can I stay near Dulles International Airport?

    If you’re looking for a place to stay in close proximity to Dulles International Airport, the Washington Dulles Airport Marriott is a great option. Only 0.7 miles from the airport, this 4-star accommodation is good value for money. It’s also only 6 miles from Herndon Centennial Golf Course.

  • What is the quickest way to get to the White House from Dulles International Airport?

    The quickest route to the White House will take approximately 32min by car. Pick up a taxi from the taxi rank outside Dulles International Airport or hire a vehicle from the companies on offer. The 26.7-mile journey will take you via the VA-267 E and the I-66 E.

  • How do I get to the city centre from Dulles International Airport?

    There are two main forms of transport to reach Washington city centre. The 27.3-mile journey will take you approximately 33min by car. Alternatively, you can catch a bus and expect the journey to take approximately 1h. Passengers looking to use public transport should expect to pay an approximate price of $7.50 (£5.30).

  • What is the cheapest flight to Washington Dulles Airport?

    In the last 3 days, the cheapest flight deal to Washington Dulles Airport was found on the route from London, at $478 return. The most popular connection is from London to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $478 in the last 3 days.

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    Central Washington, D.C. is 22 miles away from Washington, D.C. Dulles Intl Airport.

  • How much is a flight to Washington, D.C.?

    On average, a flight to Washington, D.C. costs $851. The cheapest price found on KAYAK in the last 2 weeks cost $616 and departed from London Heathrow Airport.

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

    Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Thursday where round-trip tickets can be as cheap as $843. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $971 on average.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket 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 is likely to change within 7 days, so travelers know whether to wait or book now.

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

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

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

  • What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

    The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally at night, when round-trip flights cost $743 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is $880.

  • How many direct flights to Washington, D.C. Dulles Intl Airport are there each week?

    Each week there are around 2,735 direct flights from within United Kingdom to Washington, D.C. Dulles Intl Airport. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Washington Dulles Airport

  • Looking for cheap airfare to Washington Dulles Airport? 25% of our users found round-trip tickets to Washington Dulles Airport for the following prices or less: From Edinburgh $967
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington Dulles Airport flight deals.
  • Washington Dulles Airport Station is the closest train station to Dulles International Airport (IAD). You can expect the walk from the terminal to take only 4min.
  • At Dulles International Airport you can find transport options such as the Metrobus and various taxis. If you’re looking to save some money, the Metrorail Silver Line and the Silver Line Express Bus are your best options.
  • There are a variety of ground and taxi services available from Washington Dulles Airport that you can find by downloading a company's app. They all offer pick-up and ground transportation and are extremely easy to use. Alternatively, you can use the 24h Washington Flyer Taxi Service.
  • Student tours and birthday parties are available to book for children looking to explore Washington Dulles International Airport like they’ve never seen before. Tickets are offered on a first-come, first-served basis and are a great experience.
  • Those wanting to experience a direct flight from London to Washington Dulles International Airport can expect the journey to take approximately 7h and 55min.
  • Those looking to park at Washington Dulles International Airport can expect to find a variety of parking options on offer. There are over 24,000 spaces and a valet service is available to those using the airport, as well as garages and economy parking lots.
  • Dulles International Airport is home to just one terminal building, but the amenities aren’t lacking. You can find features such as exchange counters, ATMs, and a large duty-free experience.

Reviews of the top 5 airlines serving from the United Kingdom to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Dulles Intl? 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.
8.0
DeltaOverall score based on 7980 reviews
8.5Crew
7.9Entertainment
7.3Food
8.2Boarding
7.9Comfort
Airline reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

4.0 OkayAnonymous, Jul 2025ICN - SEA
Read more Delta reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

The crew was amazing; Von, Vera and Guadalupe were very friendly and attentive throughout the entire flight. They were friendly and welcoming to everyone. A solid and dedicated team for sure!

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Very nice and clean plane. Transit time between flights was tight though

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

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.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

Excellent service, full flight but all went well ; slightly delayed start at Faro but arrived in Cork on time.

The ease of boarding was good. I wish they had something to eat on the plane.

Seats were less comfortable and tight from Newark to Dublin, than my second flight ( small segment from Dublin to Lyon). Movie audio was with frying sound overall. Yet the worst was as follows: one male, (dark hair , glasses on) from the crew member was so cold and rough, while I remained with constancy polite and kind. Per exple with the noise level I could not hear him at first for beverages, he rolled his eyes at the third times I finally heard him. From the start, loading my small hand bags , he directly spoke to me and said “ I had to keep my shopping bad by my seat, under , while there was sufficient room and I was among the last to sit. I show him the space , his face was always dull, stoic, not welcoming as the usual crew members from any airline companies are. When I think of my experience I liard w Aer Lingus, this is the image that gets back to me. Needless to say that as a passenger and client, I felt belittled since all this happened in front of the surrendering passengers. It s an affront and not a pleasant feeling especially when being traveling which oftentimes involves stress with carrying, and making it on time. I m not happy with the experience I had to be honest and I fly four times a year. Thank you for allowing me to share this statement with your company.

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

We never made it onto this flight due to BA's lackluster organisation.

The air hostess were good, cheerful, but I didn't like the boarding. My son and I initially bought our flight tickets, making sure it included 1 luggage and a carry on. Tickets were purchased for British airlines, but we were merged with American Airlines. At checking in our languages, we were told, we don't have luggage prepaid so we had to pay extra $125 each and almost £60 on our way back. I think that's unfair.

Economy seats are so small and compacted so close together that comfort is negatively affected, especially on long flights. However that is due to aircraft design, not anything the airline can do about it.

3/4 bags delayed and 1/4 damaged at the other end. Flight was freezing

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