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Cheap flights from the United Kingdom to Washington, D.C. Dulles Intl Airport from £280

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
7 May — 14 May1
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 7 April 2026.

Thu 21/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 27/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 6/4£421
Tue 12/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Tue 19/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/4£422
Tue 19/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 31/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 5/4£428
Thu 21/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Mon 25/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 2/4£429
Wed 2/917:05
LHR
-
IAD
Nonstop8h 15m
British Airways
Wed 9/917:40
IAD
-
LHR
Nonstop7h 40m
British Airways
Deal found 5/4£430
Fri 29/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 31/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 4/4£436
Thu 28/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Sun 31/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/4£438
Wed 29/408:30
STN
-
IAD
2 stops15h 50m
Multiple Airlines
Mon 4/520:30
IAD
-
STN
2 stops19h 50m
Multiple Airlines
Deal found 2/4£444
Wed 29/406:15
LTN
-
IAD
2 stops18h 05m
Multiple Airlines
Mon 4/520:30
IAD
-
LTN
2 stops21h 20m
Multiple Airlines
Deal found 2/4£450
Thu 16/414:50
LGW
-
IAD
1 stop29h 20m
TAP AIR PORTUGAL
Sun 19/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 5/4£450
Mon 4/506:30
STN
-
IAD
2 stops17h 50m
Multiple Airlines
Mon 11/520:30
IAD
-
STN
2 stops19h 50m
Multiple Airlines
Deal found 6/4£450
Thu 7/506:30
STN
-
IAD
2 stops17h 50m
Multiple Airlines
Mon 11/520:30
IAD
-
STN
2 stops21h 50m
Multiple Airlines
Deal found 2/4£453

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 7 April 2026.

Round-trip from

£421

One-way from

£280

Popular in

July

Cheapest in

February

Average price

£527

Good round-trip deal

£492 or less

Good one-way deal

£557 or less
Icelandair
  • Icelandair
  • 21/5-27/5
  • 2 total stops
  • 42h 55m total
  • United Kingdom to Washington, D.C.
Search Deals
22/5
  • 22/5
  • 3 total stops
  • 39h 51m total
  • United Kingdom to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 7 April 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

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 11/9

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Fri 18/9

20:30-13:25

1 stop11h 55m

£496

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Wed 20/5

08:30-15:45

1 stop12h 15m

Washington, D.C. Dulles Intl

Wed 27/5

21:00-17:35

1 stop15h 35m

£518

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Mon 4/5

08:10-15:45

1 stop12h 35m

Washington, D.C. Dulles Intl

Mon 11/5

20:55-18:10

1 stop16h 15m

£531

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 18/6

08:40-15:35

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 9/7

22:55-11:20

Nonstop7h 25m

£539

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 15/5

08:40-15:35

1 stop11h 55m

Washington, D.C. Dulles Intl

Tue 19/5

22:55-11:20

Nonstop7h 25m

£543

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 17/4

09:55-15:35

1 stop10h 40m

Washington, D.C. Dulles Intl

Tue 21/4

22:55-11:20

Nonstop7h 25m

£546

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 30/4

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 14/5

20:30-14:40

1 stop13h 10m

£548

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 10/5

19:10-15:30

1 stop25h 20m

Washington, D.C. Dulles Intl

Wed 3/6

17:40-06:20

Nonstop7h 40m

£553

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Mon 4/5

08:10-19:20

2 stops16h 10m

Washington, D.C. Dulles Intl

Mon 11/5

20:30-08:35

3 stops31h 05m

£554

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 30/4

08:40-15:35

1 stop11h 55m

Washington, D.C. Dulles Intl

Wed 13/5

22:55-11:20

Nonstop7h 25m

£557

Flights are sorted by cheapest return flights first.

Deals found on 4/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £339). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £460). 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 7 April 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 7 April 2026.

The most flights from GB0 to IAD are scheduled on a Monday (28 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (24 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 128 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?

Saturday 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 10% 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 7 April 2026.
Read through reviews of airlines operating flights from the United Kingdom to Washington, D.C. Dulles Intl Airport, such as Virgin Atlantic,United Airlines, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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
685 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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!
United Airlines
7.4
Good
9,548 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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
1,499 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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
7,894 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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
7,857 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Boarding

7.7

Comfort

7.3

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?

    Icelandair, Aer Lingus, and Delta can get you from United Kingdom to Washington, D.C. Dulles Intl Airport in just under 10h. Your travel time can differ by up to 2h 35m. The distance from United Kingdom to Washington, D.C. Dulles Intl Airport is about 3426 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 £352. Users have also found prices from £366 and £380 on Aer Lingus and Virgin Atlantic, 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 (90%), Austrian Airlines (90%), Copa Airlines( 90%).

  • 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 £1,553, our data shows the cheapest flight currently is £418. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £353 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 £339). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £460). 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
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling

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
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
Stansted to Dulles Intl flights
London City 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
Stansted to Baltimore flights
Manchester to Baltimore flights
Edinburgh to Reagan-National flights
Edinburgh to Baltimore flights
Manchester to Reagan-National flights
Luton to Baltimore flights
Glasgow Intl to Dulles Intl flights
Southampton to Dulles Intl flights
London City to Baltimore flights
Glasgow Intl to Baltimore flights
Southampton to Baltimore flights
Glasgow Intl to Reagan-National flights
Newcastle upon Tyne to Dulles Intl flights
Bristol to Dulles Intl flights
Birmingham to Dulles Intl flights
London City to Reagan-National flights
Belfast Intl to Dulles Intl flights
Belfast City to Dulles Intl flights
Aberdeen to Dulles Intl flights
Birmingham to Baltimore flights
Bristol to Baltimore flights
Bristol to Reagan-National flights
Aberdeen to Reagan-National flights
Aberdeen to Baltimore flights
Amsterdam to Dulles Intl flights
Birmingham to Reagan-National flights
Liverpool to Baltimore flights
Leeds to Dulles Intl flights
Belfast Intl to Baltimore flights
Belfast City to Baltimore flights
Dublin to Baltimore flights
Belfast City to Reagan-National flights
Newcastle upon Tyne to Reagan-National flights
Newcastle upon Tyne to Baltimore flights
Dublin to Dulles Intl 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 7 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£191Average£542FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£336Average£472FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£337Average£550FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£369Average£686FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£370Average£626FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air FranceCheapest£388Average£684FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£410Average£690FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£414Average£670FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£418Average£625FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£422Average£671FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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