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Cheap flights from the United Kingdom to Washington, D.C. Dulles Intl Airport from £242

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
8 Mar — 15 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 6 February 2026.

Mon 2/310:20
LHR
-
IAD
1 stop11h 55m
Scandinavian Airlines
Sat 7/320:30
IAD
-
LHR
1 stop14h 30m
Scandinavian Airlines
Deal found 4/2£392
Fri 24/717:05
LHR
-
IAD
Nonstop8h 15m
British Airways
Mon 3/822:25
IAD
-
LHR
Nonstop7h 25m
British Airways
Deal found 4/2£395
Fri 6/314:00
LGW
-
IAD
1 stop22h 24m
Multiple Airlines
Mon 16/308:09
IAD
-
LGW
1 stop21h 51m
Multiple Airlines
Deal found 2/2£397
Wed 20/517:05
LHR
-
IAD
Nonstop8h 15m
British Airways
Tue 26/517:40
IAD
-
LHR
Nonstop7h 40m
British Airways
Deal found 4/2£400
Wed 20/517:05
LHR
-
IAD
Nonstop8h 15m
British Airways
Mon 1/622:25
IAD
-
LHR
Nonstop7h 25m
British Airways
Deal found 3/2£401
Mon 9/311:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Tue 17/320:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/2£401
Wed 4/311:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 11/320:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/2£403
Wed 13/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Sat 30/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/2£407
Thu 7/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Thu 28/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/2£409
Sun 1/309:00
LHR
-
IAD
1 stop12h 40m
Multiple Airlines
Sun 8/323:15
IAD
-
LHR
Nonstop7h 35m
Multiple Airlines
Deal found 2/2£409
Wed 4/305:55
STN
-
IAD
2 stops20h 05m
Multiple Airlines
Mon 9/318:30
IAD
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 3/2£409
Fri 13/206:00
LHR
-
IAD
1 stop13h 40m
Multiple Airlines
Sun 22/220:30
IAD
-
LHR
1 stop14h 50m
Multiple Airlines
Deal found 2/2£411

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 6 February 2026.

Round-trip from

£392

One-way from

£242

Popular in

July

Cheapest in

February

Average price

£446

Good round-trip deal

£420 or less

Good one-way deal

£380 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 2/3-7/3
  • 2 total stops
  • 26h 25m total
  • United Kingdom to Washington, D.C.
Search Deals
8/4
  • 8/4
  • 3 total stops
  • 43h 11m total
  • United Kingdom to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£56 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 6 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

Mon 9/3

07:30-15:35

1 stop12h 05m

Washington, D.C. Dulles Intl

Tue 17/3

19:20-06:40

Nonstop7h 20m

£440

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Tue 10/3

19:10-15:25

1 stop24h 15m

Washington, D.C. Dulles Intl

Mon 16/3

17:25-08:40

1 stop11h 15m

£451

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 10/3

08:40-17:05

1 stop12h 25m

Washington, D.C. Dulles Intl

Wed 18/3

23:20-10:40

Nonstop7h 20m

£452

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 25/2

05:55-21:00

2 stops20h 05m

Washington, D.C. Dulles Intl

Mon 2/3

19:40-23:55

2 stops23h 15m

£458

ManchesterWashington, D.C.

MAN - IAD

MANIAD

Manchester

Thu 5/3

08:05-18:30

2 stops15h 25m

Washington, D.C. Dulles Intl

Mon 9/3

20:40-13:25

2 stops12h 45m

£460

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Mon 9/3

08:40-17:05

1 stop12h 25m

Washington, D.C. Dulles Intl

Tue 17/3

19:05-16:35

1 stop17h 30m

£461

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 29/4

22:45-21:25

3 stops27h 40m

Washington, D.C. Dulles Intl

Sun 10/5

09:45-17:00

3 stops26h 15m

£461

ManchesterWashington, D.C.

MAN - IAD

MANIAD

Manchester

Sat 18/4

10:40-16:50

2 stops35h 10m

Washington, D.C. Dulles Intl

Thu 23/4

20:20-08:55

1 stop31h 35m

£465

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 8/3

12:05-16:35

Nonstop8h 30m

Washington, D.C. Dulles Intl

Thu 19/3

19:20-06:40

Nonstop7h 20m

£465

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 7/3

12:05-15:35

Nonstop8h 30m

Washington, D.C. Dulles Intl

Sun 15/3

19:20-06:40

Nonstop7h 20m

£465

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 60 results
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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, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £328). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £463). 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 6 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 6 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 (18 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 6 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

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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
1,445 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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
606 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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
7,762 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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
7,716 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Entertainment

7.6

Comfort

7.3

Crew

8.2

Overall

7.5

Boarding

7.7

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, SWISS, and Delta can get you from United Kingdom to Washington, D.C. Dulles Intl Airport in just under 12h 05m. Your travel time can differ by up to 12h 10m. 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 £284. Users have also found prices from £381 and £386 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 £1,363, 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 £216 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, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £328). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £463). 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

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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
Stansted to Dulles Intl flights
London City to Dulles Intl flights
Luton to Dulles Intl flights
Gatwick to Baltimore flights
Gatwick to Reagan-National flights
Manchester to Dulles Intl flights
Manchester to Reagan-National flights
Manchester to Baltimore flights
Edinburgh to Dulles Intl flights
Luton to Baltimore flights
Stansted to Baltimore flights
Birmingham to Dulles Intl flights
Birmingham to Reagan-National flights
Leeds to Dulles Intl flights
Edinburgh to Baltimore flights
Edinburgh to Reagan-National flights
Glasgow Intl to Dulles Intl flights
London City to Baltimore flights
Glasgow Intl to Baltimore flights
Leeds to Baltimore flights
Southampton to Dulles Intl flights
Newcastle upon Tyne to Dulles Intl flights
Birmingham to Baltimore flights
Glasgow Intl to Reagan-National flights
London City to Reagan-National flights
Leeds to Reagan-National flights
Belfast City to Dulles Intl flights
Belfast Intl to Dulles Intl flights
Belfast City to Baltimore flights
Belfast Intl to Baltimore flights
Bristol to Dulles Intl flights
Southampton to Baltimore flights
Newcastle upon Tyne to Reagan-National flights
Aberdeen to Reagan-National flights
Aberdeen to Dulles Intl flights
Aberdeen to Baltimore flights
Southend to Dulles Intl flights
Inverness to Dulles Intl flights
Inverness to Reagan-National flights
Inverness to Baltimore 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 6 February 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£186Average£511FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£332Average£539FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£337Average£472FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£372Average£664FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£388Average£636FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£399Average£688FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£411Average£610FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Virgin AtlanticCheapest£414Average£653FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£414Average£596FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£419Average£621FlexibilityNo cancel feeOn-time75%
Search KLM 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.

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