Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Washington, D.C. Dulles Intl Airport from £250

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Dulles Intl
Explore the most affordable flight options available from United Kingdom to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Thu 5/314:00
LGW
-
IAD
1 stop22h 24m
Multiple Airlines
Mon 23/314:58
IAD
-
LGW
2 stops15h 02m
Multiple Airlines
Deal found 12/2£384
Wed 25/219:25
LHR
-
IAD
1 stop24h 15m
Austrian Airlines
Wed 29/418:25
IAD
-
LHR
Nonstop7h 30m
Austrian Airlines
Deal found 9/2£386
Wed 11/320:05
LHR
-
IAD
1 stop25h 35m
SWISS
Mon 30/320:20
IAD
-
LHR
1 stop11h 40m
SWISS
Deal found 10/2£387
Wed 13/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 3/623:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 11/2£387
Tue 17/208:30
LHR
-
IAD
1 stop12h 20m
Multiple Airlines
Mon 23/217:17
IAD
-
LHR
1 stop12h 58m
Multiple Airlines
Deal found 11/2£388
Fri 15/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 5/623:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 13/2£388
Mon 23/207:40
LHR
-
IAD
1 stop12h 55m
Lufthansa
Mon 23/323:15
IAD
-
LHR
Nonstop7h 35m
Lufthansa
Deal found 10/2£389
Tue 17/209:00
LHR
-
IAD
1 stop12h 40m
SWISS
Tue 24/220:30
IAD
-
LHR
1 stop11h 30m
SWISS
Deal found 10/2£390
Wed 8/715:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 22/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 12/2£390
Sun 1/306:00
LHR
-
IAD
1 stop13h 40m
Austrian Airlines
Sat 7/317:10
IAD
-
LHR
1 stop31h 45m
Austrian Airlines
Deal found 10/2£390
Thu 19/213:30
LHR
-
IAD
1 stop11h 45m
Lufthansa
Wed 25/217:40
IAD
-
LHR
1 stop11h 45m
Lufthansa
Deal found 11/2£391
Tue 21/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 1/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 10/2£391

Find flight deals from United Kingdom to Dulles Intl

Keep the following information in mind while searching for United Kingdom to Dulles Intl flight deals. Data was last updated 13 February 2026.

Round-trip from

£384

One-way from

£250

Popular in

July

Cheapest in

January

Average price

£460

Good round-trip deal

£422 or less

Good one-way deal

£379 or less
5/3-23/3
  • 5/3-23/3
  • 3 total stops
  • 37h 26m total
  • United Kingdom to Washington, D.C.
Search Deals
11/3
  • 11/3
  • 2 total stops
  • 39h 34m total
  • United Kingdom to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

United Kingdom

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 27/2

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 1/5

21:50-10:40

Nonstop7h 50m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/3

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Mon 27/4

18:25-06:55

Nonstop7h 30m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 28/2

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Mon 27/4

18:25-06:55

Nonstop7h 30m

£397

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 23/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Sun 28/6

23:20-14:40

1 stop10h 20m

£408

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 21/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Sun 28/6

23:20-14:40

1 stop10h 20m

£408

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 21/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Fri 3/7

23:20-14:40

1 stop10h 20m

£408

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/3

07:30-14:35

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

16:30-06:30

1 stop10h 00m

£408

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 17/5

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 30/5

20:30-11:45

1 stop10h 15m

£415

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 15/5

08:40-16:45

1 stop13h 05m

Washington, D.C. Dulles Intl

Mon 25/5

20:20-17:50

1 stop16h 30m

£416

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Wed 11/3

19:10-15:20

1 stop24h 10m

Washington, D.C. Dulles Intl

Sun 22/3

17:25-08:40

1 stop11h 15m

£416

Flights are sorted by cheapest return flights first.

Deals found on 10/2

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from United Kingdom to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Washington, D.C. Dulles Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £329). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to IAD?

Find hourly flight availability from United Kingdom to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 February 2026.

When flying from United Kingdom to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from United Kingdom to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 February 2026.

The most flights from GB0 to IAD are scheduled on a Wednesday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

How often are flights from the United Kingdom to Washington, D.C. delayed?

About 17% of weekly flights between United Kingdom and Washington, D.C. have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for the United Kingdom to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Washington, D.C. flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 9% of flights being delayed.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 13 February 2026.
Read through reviews of airlines operating flights from the United Kingdom to Washington, D.C. Dulles Intl Airport, such as Virgin Atlantic, Aer Lingus, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Aer Lingus
7.2
Good
1,450 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.1
Good
614 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,784 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,737 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Comfort

7.3

Overall

7.5

Boarding

7.7

Entertainment

7.6

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

    United Airlines, Icelandair, and SWISS can get you from United Kingdom to Washington, D.C. Dulles Intl Airport in just under 12h 40m. Your travel time can differ by up to 20h. The distance from United Kingdom to Washington, D.C. Dulles Intl Airport is about 3664 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £283. Users have also found prices from £380 and £385 on Aer Lingus and Icelandair, respectively.

  • What are the most popular routes from United Kingdom to Washington, D.C. Dulles Intl Airport?

    The most popular flight routes from United Kingdom to Washington, D.C. Dulles Intl Airport are London Heathrow - Washington, D.C. Dulles Intl, London Gatwick - Washington, D.C. Dulles Intl and London Stansted - Washington, D.C. Dulles Intl.

  • What are the most reliable airlines from United Kingdom to Washington, D.C. Dulles Intl Airport?

    Before booking your flight to Washington, D.C. Dulles Intl Airport from United Kingdom, check out the most reliable airlines to get you to your destination on time: Air Canada (84%), Austrian Airlines (84%), Copa Airlines( 84%).

  • What are the cheapest flights from United Kingdom to Washington, D.C. Dulles Intl Airport?

    While on average a flight from United Kingdom to Washington, D.C. Dulles Intl Airport is generally £1,355, our data shows the cheapest flight currently is £373. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £295 for that flight.

  • Can I find deals for flights from United Kingdom to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Dulles Intl.

  • Can I find deals for business class flights from United Kingdom to Dulles Intl?

    Yes. Cheapflights offers flight deals from United Kingdom to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £329). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £461). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Heathrow to Baltimore flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Baltimore flights
Gatwick to Reagan-National flights
Luton to Dulles Intl flights
Edinburgh to Dulles Intl flights
Manchester to Dulles Intl flights
Manchester to Baltimore flights
Stansted to Baltimore flights
Manchester to Reagan-National flights
Edinburgh to Baltimore flights
Birmingham to Dulles Intl flights
Edinburgh to Reagan-National flights
Birmingham to Reagan-National flights
Glasgow Intl to Dulles Intl flights
London City to Baltimore flights
Luton to Baltimore flights
Glasgow Intl to Reagan-National flights
Glasgow Intl to Baltimore flights
Newcastle upon Tyne to Dulles Intl flights
London City to Reagan-National flights
Leeds to Dulles Intl flights
Birmingham to Baltimore flights
Belfast Intl to Baltimore flights
Belfast City to Baltimore flights
Leeds to Baltimore flights
Newcastle upon Tyne to Reagan-National flights
Aberdeen to Reagan-National flights
Belfast City to Reagan-National flights
Belfast Intl to Dulles Intl flights
Bristol to Dulles Intl flights
Newcastle upon Tyne to Baltimore flights
Aberdeen to Dulles Intl flights
Aberdeen to Baltimore flights
Southampton to Baltimore flights
Southend to Dulles Intl flights
Belfast City to Dulles Intl flights
Inverness to Dulles Intl flights
Inverness to Reagan-National flights
Inverness to Baltimore flights
Leeds to Reagan-National flights
Frankfurt to Dulles Intl flights
Bristol to Reagan-National flights

Top 10 airlines flying from United Kingdom to Dulles Intl

Discover the top 10 airlines that operate flights from United Kingdom to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£186Average£509FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£336Average£508FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£340Average£534FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£359Average£591FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£360Average£665FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air FranceCheapest£376Average£654FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£387Average£642FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£397Average£674FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£410Average£601FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
British AirwaysCheapest£410Average£605FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Dulles Intl?

When you search for this flight from United Kingdom to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Dulles Intl?

Cheapflights helps you find that perfect flight to Dulles Intl from United Kingdom by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from United Kingdom to Dulles Intl with no change fees?

Yes, we can. To see specific flights from United Kingdom to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to Dulles Intl become cheaper?

Yes! Start tracking prices for United Kingdom to Dulles Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.