£168 Find Cheap Flights from Washington Dulles Airport to United Kingdom – Compare and Save

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 the United Kingdom departing on 24/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Dulles Intl to the United Kingdom

Cheapest return prices found by our users on KAYAK in the last 72 hours
London
London2 stops£659
Manchester
Manchester1 stop£589
Edinburgh
Edinburgh1 stop£683
Birmingham
Birmingham2 stops£582
Belfast
Belfast2 stops£680
Bristol
Bristol1 stop£626
Aberdeen
Aberdeen1 stop£641
Liverpool
Liverpool2 stops£645
Inverness
Inverness2 stops£595
Cardiff
Cardiff1 stop£571
Exeter
Exeter1 stop£666
London
London2 stops£659
Manchester
Manchester1 stop£589
Edinburgh
Edinburgh1 stop£683
Birmingham
Birmingham2 stops£582
Belfast
Belfast2 stops£680
Bristol
Bristol1 stop£626
Aberdeen
Aberdeen1 stop£641
Liverpool
Liverpool2 stops£645
Inverness
Inverness2 stops£595
Cardiff
Cardiff1 stop£571
Exeter
Exeter1 stop£666

Book Cheap Dulles Intl to the United Kingdom Plane Tickets

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

Recent return flight deals from Dulles Intl to the United Kingdom

Wed, 22 Jul - Sat, 15 Aug
Multiple Airlines Logo
23:20 - 13:25
IAD
-
GLA
9h 05m
1 stop
Multiple Airlines Logo
07:40 - 10:45
GLA
-
IAD
32h 05m
2 stops
£507Multiple Airlines
Tue, 18 Aug - Tue, 25 Aug
Multiple Airlines Logo
23:20 - 13:25
IAD
-
GLA
9h 05m
1 stop
Multiple Airlines Logo
08:20 - 10:45
GLA
-
IAD
31h 25m
2 stops
£521Multiple Airlines
Wed, 30 Sep - Mon, 5 Oct
Multiple Airlines Logo
23:20 - 13:25
IAD
-
GLA
9h 05m
1 stop
Multiple Airlines Logo
20:40 - 19:35
GLA
-
IAD
27h 55m
2 stops
£529Multiple Airlines
Mon, 16 Nov - Thu, 19 Nov
United Airlines Logo
17:15 - 10:20
IAD
-
MAN
36h 05m
2 stops
United Airlines Logo
06:10 - 14:30
MAN
-
IAD
13h 20m
1 stop
£604United Airlines
Mon, 16 Nov - Thu, 19 Nov
United Airlines Logo
17:15 - 10:20
IAD
-
MAN
36h 05m
2 stops
United Airlines Logo
06:10 - 20:33
MAN
-
IAD
19h 23m
2 stops
£607United Airlines
Wed, 11 Nov - Wed, 18 Nov
British Airways Logo
18:20 - 10:55
IAD
-
INV
11h 35m
1 stop
British Airways Logo
10:30 - 19:55
INV
-
IAD
14h 25m
1 stop
£613British Airways
Tue, 20 Oct - Mon, 26 Oct
British Airways Logo
22:25 - 14:25
IAD
-
INV
11h 00m
1 stop
British Airways Logo
19:45 - 20:55
INV
-
IAD
29h 10m
1 stop
£614British Airways
Mon, 3 Aug - Tue, 18 Aug
Virgin Atlantic Logo
06:10 - 22:30
IAD
-
INV
35h 20m
2 stops
Virgin Atlantic Logo
13:20 - 15:35
INV
-
IAD
31h 15m
1 stop
£626Virgin Atlantic
Sun, 20 Sep - Wed, 23 Sep
Virgin Atlantic Logo
17:40 - 17:20
IAD
-
LCY
18h 40m
1 stop
Virgin Atlantic Logo
09:20 - 15:35
LCY
-
IAD
11h 15m
1 stop
£659Virgin Atlantic
Mon, 3 Aug - Sat, 8 Aug
Aer Lingus Logo
17:15 - 16:50
IAD
-
SOU
18h 35m
1 stop
Aer Lingus Logo
09:20 - 19:10
SOU
-
IAD
14h 50m
1 stop
£831Aer Lingus
Booking Insights

KAYAK's insights & trends for Dulles Intl to the United Kingdom flights

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

What is the cheapest Washington, D.C. Dulles Intl Airport to the United Kingdom flight route?

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

The cheapest ticket to the United Kingdom from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to London, at £657 return. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was £657.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from Washington, D.C. Dulles Intl Airport to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally in the evening, when retur flights cost £528 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is £618.

Can I save money by flying with a stopover from Washington, D.C. Dulles Intl Airport to the United Kingdom?

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

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £652 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to the United Kingdom, 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 the United Kingdom is January, when tickets cost £311 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of return tickets is £970 and £776 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to United Kingdom?

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

If you are looking for a flight deal from Washington Dulles Airport to United Kingdom, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from United Kingdom, Thursday is the cheapest day to fly and Sunday is the most expensive.

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

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

To get a below-average price on a flight from Washington, D.C. Dulles Intl Airport to the United Kingdom, you should book around 2 weeks before departure, which saves you about 15% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know - Cheap tickets from Washington Dulles Airport to United Kingdom

Low seasonFebruary
Cheapest flight£168
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flight from Washington Dulles Airport to Manchester

Flights from Dulles Intl to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Dulles Intl to the United Kingdom 
DeeFlew with United Airlines
IAD
-
LHR
Feb 2025
For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.
EllenFlew with British Airways
IAD
-
LHR
Oct 2024
Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.
CraigFlew with United Airlines
IAD
-
LHR
Jun 2024
Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to United Kingdom?

    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 United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to United Kingdom 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 United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington Dulles Airport to United Kingdom 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 from Washington Dulles Airport to United Kingdom?

    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 from Washington Dulles Airport to United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight from Washington Dulles Airport to United Kingdom

  • Looking for a cheap flight from Washington Dulles Airport to United Kingdom? 25% of our users found tickets from Washington Dulles Airport to United Kingdom for the following prices or less: London £362 one-way - £751 round-trip

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

 
Need help choosing which airline to fly with from Dulles Intl to the United Kingdom? 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.
7.5
Virgin AtlanticOverall score based on 689 reviews
8.1Crew
7.5Entertainment
7.7Boarding
6.9Food
7.3Comfort
Airline reviews

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

4.0 OkayAnonymous, Mar 2026
BOS - LIS
Read more Virgin Atlantic reviews

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

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

Food has been disappointing in both legs of flight to india

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

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

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

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

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

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

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

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

We were an hour and a half late, which caused my rental car company to cancel my reservation. We had no car, had to take a taxi to our hotel, and then a taxi back to get a new car the next day. Sometimes lack of on-time performance can end up costing the passenger a lot of money, none of which is covered by the airline that operated the late flight.

Overall good experience. But seats were small and uncomfortable for the price. Good entertainment, staff friendly and attentive.

Smooth quiet flight take off and landing both excellent. Food was mediocre. Boarding at gate was disorganized and unacceptable.

Very good trip. Nice clean aircraft. Helpful and friendly crew.

Crew members Grainne and Karen were extremely rude and unprofessional

I am very disappointed in that KAYAK sold me this flight as a business class it was not a business class. It was a regular economy class ticket. This was not Art Linus mistake. It was kayaks.

Crew was friendly and seats were comfortable. The connection however there were no free snacks or drinks.

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

Flights were delayed and due to a checked hand luggage bag by an overzealous gate agent in Berlin I missed my ground connection costing me another £80. Food was cold and bland, I honestly expect better from a national carrier operating out of one of their major hubs.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

We had almost a 6 hr delay, primarily due to weather, the e problem was that they communicated this delay and its length very poorly. The boarding was chaotic - even though they had hours to figure it out! The plane was an old 747 whose touch screens barely worked and there was a faulty USB port under my seat rest (something that wasn't labeled as being there) They organized my delayed luggage well. And I could get updates on the Lufthansa website. My shirt connecting flight charged for everything except water. Coffee was over 3€

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The flight was ok. The seats are so small. The free wifi for members was not an option on this flight. The one flight attendant, older woman with straight white/grey hair, was very rude. The gentleman next to me asked about the wifi since he was a member as well. He stated, accurately, that the option to enter the idea number was not available. Her response was, "I don't know what to tell you" and walked away from him. The rest of the staff was wonderful. I asked another flight attendant about the wifi, she said the free wifi was not enabled on that flight (true or not- at least she was friendly). It was also pretty dirty. When I opened the tray table it had mushed crumbs and there was a dirty used pair of ear buds in my seat pocket. Lastly the air vent above my head was working but stuck so I was unable to move it to face me when it got warm. I fly American often but this really was not a great flight.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Flight was good but temp in the cabin was cold.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Everything you need to know for your flight from Dulles Intl to the United Kingdom

Information on your arrival and departure airports