$254 Find Cheap Flights from the United Kingdom 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 to Washington, D.C. departing on 9/13. 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 Washington, D.C.

 
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 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 round-trip flight deals from the United Kingdom to Washington, D.C.

Sun, Sep 7 - Thu, Sep 18
Austrian Airlines Logo
12:15 pm - 3:30 pmLHR-IAD
8h 15mnonstop
Austrian Airlines Logo
10:25 pm - 10:40 amIAD-LHR
7h 15mnonstop
$425Austrian Airlines
Find Deal
Wed, Sep 17 - Fri, Oct 10
TAP AIR PORTUGAL Logo
6:45 pm - 3:20 pmLHR-IAD
25h 35m1 stop
TAP AIR PORTUGAL Logo
5:00 pm - 5:45 pmIAD-LHR
19h 45m1 stop
$444TAP AIR PORTUGAL
Find Deal
Thu, Sep 11 - Sun, Sep 14
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$451PLAY
Find Deal
Wed, Oct 8 - Mon, Oct 13
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$458PLAY
Find Deal
Sat, Sep 6 - Wed, Sep 10
United Airlines Logo
7:25 am - 7:25 pmLHR-IAD
17h 00m1 stop
United Airlines Logo
10:25 pm - 10:40 amIAD-LHR
7h 15mnonstop
$579United Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 22
United Airlines Logo
8:40 am - 9:55 amLHR-BWI
30h 15m2 stops
United Airlines Logo
10:51 am - 11:45 amBWI-LHR
19h 54m1 stop
$581United Airlines
Find Deal
Wed, Oct 8 - Sat, Oct 18
British Airways Logo
2:25 pm - 5:30 pmLHR-IAD
8h 05mnonstop
British Airways Logo
7:25 pm - 7:45 amIAD-LHR
7h 20mnonstop
$586British Airways
Find Deal
Mon, Sep 8 - Mon, Sep 22
British Airways Logo
5:00 pm - 8:10 pmLHR-IAD
8h 10mnonstop
British Airways Logo
10:40 pm - 11:05 amIAD-LHR
7h 25mnonstop
$599British Airways
Find Deal
Fri, Aug 1 - Fri, Aug 8
Aer Lingus Logo
8:35 am - 3:50 pmEDI-IAD
12h 15m1 stop
Aer Lingus Logo
5:20 pm - 9:05 amIAD-EDI
10h 45m1 stop
$895Aer Lingus
Find Deal
Wed, Jul 16 - Thu, Jul 17
Aer Lingus Logo
9:40 am - 7:30 pmEDI-IAD
14h 50m1 stop
Aer Lingus Logo
8:25 pm - 11:15 amIAD-EDI
9h 50m1 stop
$1,055Aer Lingus
Find Deal
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KAYAK's insights & trends for flights to Washington, D.C.

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Washington, D.C. is February, where tickets cost $623 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from the United Kingdom is $898 and $875 respectively. For one-way flights, the best month to travel is January with an average price of $768.

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

If you’re looking for cheap airfare to Washington, D.C., 25% of our users found tickets to Washington, D.C. for the following prices or less: From London Heathrow Airport $770 round-trip.

How far in advance should I book a flight 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 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, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Which is the cheapest airport to fly into in Washington, D.C.?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington, D.C. is Baltimore/Washington Airport (BWI), with an average flight price of $187.


Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$254
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from London Stansted Airport to Baltimore

FAQs - booking Washington, D.C. flights

  • How do I transfer between terminals at the Washington Airports?

    Due to the size of Dulles Airport, the AeroTrain service is the fastest way to move through each gate section. As Dulles Airport continues to grow, it is recommended to check the airport website for a map of the AeroTrain loops to ensure you take the correct service. To make it around Reagan airport, the airport shuttle bus operates 24 hours a day and loops between Terminals A, B, and C and the car parks. Alternatively, you can take the pedestrian bridge to move between Terminals B and C.

  • Where can I find the duty-free stores at the Washington Airports?

    Due to the size of Dulles Airport, there are a number of duty-free shopping opportunities. You can find two on Concourse A, near Gate A32 and A14, one near Gate B63 on Concourse B, near C14 and C4 on Concourse C and near Gate D1 and Gate 12 on Concourse D. Reagan Airport also has duty-free stores, with one in Terminal A and one store in Terminal C.

  • Where can I get something to eat after my flight?

    If you’re looking to grab a coffee and something to eat, both Reagan Airport and Dulles Airport have a Starbucks in the ticketing area after you pass through security. If you’re at Reagan Airport, you could also have a cold drink and something to eat at Il Vaggio’s Matsutake Sushi or Legal Sea Foods located in the National Hall. At Dulles Airport, you can find the Gourmet Market on the baggage claim level.

  • What accommodation options are there near the Washington Airports?

    As the Reagan Airport is within 10 minutes of the city, there is a wide range of hotels available close by, including the Crystal Gateway Marriott or Hampton Inn near the train station. If you’d like to stay somewhere on the airport site, Washington Dulles Airport Marriott is opposite the Dulles Airport terminals with an airport shuttle available.

  • Which Washington, D.C. airport is closest to central Washington, D.C.?

    Washington, D.C. is served by 2 major airports. Reagan Washington National Airport (4 miles) is the closest to the center of Washington, D.C. and Washington Dulles Airport is 22 miles from the center.

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

    On average, a flight to Washington, D.C. costs $831. The cheapest price found on KAYAK in the last 2 weeks cost $566 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 Tuesday where round-trip tickets can be as cheap as $840. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $991 on average.

  • How does KAYAK find such low prices on flights 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 to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket 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. 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, D.C.?

    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, D.C. 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, 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. 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.?

    The cheapest time of day to fly to Washington, D.C. is generally at night, when round-trip flights cost $762 on average. The most expensive time of day to fly to Washington, D.C. is generally in the morning, which is peak travel time and where the average cost of a ticket is $889.

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

    Each week there are around 8,202 direct flights from within United Kingdom to Washington, D.C.. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $688 or less one-way and $837 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington, D.C. flight deals.
  • There are a number of cities in the UK with direct flights to Washington DC, including London, Manchester, Newcastle, Glasgow, Edinburgh and Birmingham. You will fly into one of Washington’s two major internationals airports – Dulles International Airport (IAD) or Ronald Reagan Washington National Airport (DCA).
  • Reagan Airport is the closest airport to downtown Washington DC at just a 13-minute drive across the Potomac River. This airport is well connected to the public transport system on the Blue Line and Yellow Line of the Metrorail, which will take you into the city centre. You can find the station between Terminals B and C.
  • The larger Dulles Airport is located approximately 40 minutes outside of Washington DC and is not part of the Metrorail service. To help connect travellers to the city, you can catch the Silver Line Express bus to the Wiehle-Reston East station on the Silver Line. This service costs approximately $5 a ticket (£3.70), plus the metro ticket.
  • If you’re travelling with kids, Dulles Airport has partnered with NASA to provide an interactive gaming area on Concourse B near Gate B70. Here your children, or children at heart, can play games and learn while waiting to fly. The airport website also has activity sheets free to print off.
  • For those who need a phone charger after their flight to Washington DC, Reagan Airport has charging stations near the gates, in the restaurant area and at the baggage claim level. You will find these by looking for the "Power Up" sign.

Reviews of the top 5 airlines serving from the United Kingdom to Washington, D.C.

 
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 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.
7.4
United AirlinesOverall score based on 8809 reviews
7.3Comfort
8.1Crew
7.7Boarding
7.0Entertainment
6.6Food
Airline reviews

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

4.0 OkayAnonymous, Jun 2025CLT - IAD
Read more United Airlines reviews

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.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Horrifying! And I am almost 2 million miles with United. Late by 3 1/2 hours. Worst: after two hours on the plane waiting, they decided that one of the tires had been damaged and then decided to change it. Another hour and a half to change the tire!!!!! NO EXCUSE FOR THIS. The crew didn't even offer a glass of water until we had been on the plane for FIVE hours. This is the worst airline in the world. I'm simply stuck because they fly on the only routes I need.

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

At check-in the unmanned machines said QR code was invalid so had to queue for over an hour to check in bags

i used to fly aer Lingus regularly but due to price - poor seating etc i have been using other carriers - i now have aer lingus in my state and the price is always the highest - i have flown to Ireland 11 times in last 24 months and have not used Hartford because of price

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

The flights were in time and the bags arrived. well done

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

For a no frills flight this was surprising comfortable. The crew were helpful and nice. The flight was smooth and there were no delays or issues which I haven't had on a flight in a long time. I would definitely fly with them again.

The flight was canceled by play less than 24 hours prior to the trip, and I was unable to re-book. Have not received a refund for the trip despite filling out the appropriate form.

Was was cancelled less than 24 hours prior to my scheduled departure by PLAY. Despite my attempts to rebook my travel, I encountered significant cost increases that rendered this option unfeasible. In accordance with EC Regulation 261/2004, airlines are required to issue a full refund for cancelled flights within seven days of the scheduled departure if a refund is requested instead of rebooking on another flight. It has been three weeks without a refund or an answer

Have not recieved full refund for my flight, which was cancelled less than 24 hours prior to my scheduled departure by PLAY. Despite my attempts to rebook my travel, I encountered significant cost increases that rendered this option unfeasible. In accordance with EC Regulation 261/2004, airlines are required to issue a full refund for cancelled flights within seven days of the scheduled departure if a refund is requested instead of rebooking on another flight. This request was completed three weeks ago an answer or refund.

It would have been better to have USB charging ports available on the longer haul Flight that one of 2 hours

Was very good Staff was great. No tv monitors tho. So long flights make it longer

The worst. No free beverages. No entertainment on an overseas flight. Not enough space. Never again.

Play is affordable! Only way we fly from the states to Europe. Left late but arrived on time

have screens on backs of chairs...offer free snacks and water

Boarding and crew was great. Flight was cold, need layers. Deplaning was hard. We had to take stairs off the plane and I was separated from my travel companion because we were not seated together and they would not let him wait for me to get off so we were forced onto different shuttles.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

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