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Cheap flights from the United Kingdom to Washington, D.C. Dulles Intl Airport from £282

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 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
17 Jan — 24 Jan1
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 18 December 2025.

Thu 25/1214:45LHR - IAD
1 stop22h 57mAmerican Airlines
Thu 15/113:08IAD - LHR
1 stop13h 12mAmerican Airlines
Deal found 16/12£466
Fri 26/1212:10LHR - IAD
Nonstop8h 25mAmerican Airlines
Wed 28/118:20IAD - LHR
Nonstop7h 10mAmerican Airlines
Deal found 16/12£477
Thu 25/1212:10LHR - IAD
Nonstop8h 25mBritish Airways
Sat 24/118:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 17/12£479
Sat 27/1216:25LHR - IAD
Nonstop8h 30mAmerican Airlines
Wed 21/117:46IAD - LHR
1 stop10h 29mAmerican Airlines
Deal found 16/12£480
Wed 24/1214:45LHR - IAD
1 stop27h 42mAmerican Airlines
Wed 31/1213:57IAD - LHR
1 stop14h 18mAmerican Airlines
Deal found 17/12£481
Thu 25/1212:10LHR - IAD
Nonstop8h 25mBritish Airways
Sat 31/117:05IAD - LHR
1 stop15h 20mBritish Airways
Deal found 17/12£482
Thu 25/1214:45LHR - IAD
1 stop22h 57mFinnair
Sat 31/107:01IAD - LHR
2 stops18h 19mFinnair
Deal found 17/12£487
Wed 24/1216:25LHR - IAD
Nonstop8h 30mAmerican Airlines
Thu 15/121:45IAD - LHR
Nonstop7h 15mAmerican Airlines
Deal found 17/12£491
Thu 25/1212:10LHR - IAD
Nonstop8h 25mAmerican Airlines
Wed 31/1213:57IAD - LHR
1 stop12h 23mAmerican Airlines
Deal found 17/12£503
Thu 25/1210:20LHR - IAD
1 stop11h 55mScandinavian Airlines
Sun 13/920:20IAD - LHR
1 stop32h 00mScandinavian Airlines
Deal found 15/12£506
Thu 25/1206:40LHR - IAD
1 stop15h 35mScandinavian Airlines
Sat 24/120:30IAD - LHR
1 stop14h 30mScandinavian Airlines
Deal found 17/12£507
Mon 29/1209:50LCY - IAD
1 stop15h 25mLufthansa
Thu 19/218:00IAD - LCY
1 stop10h 20mLufthansa
Deal found 17/12£507

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 18 December 2025.

Round-trip from

£391

One-way from

£282

Popular in

July

Cheapest in

February

Average price

£597

Good round-trip deal

£512 or less

Good one-way deal

£485 or less
14/1-21/1
  • 14/1-21/1
  • 4 total stops
  • 36h 05m total
  • United Kingdom to Washington, D.C.
Search Deals
21/2
  • 21/2
  • 2 total stops
  • 33h 05m total
  • United Kingdom to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 2025.
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

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 14/1

07:45-18:30

2 stops15h 45m

Washington, D.C. Dulles Intl

Wed 21/1

19:40-21:00

2 stops20h 20m

£391

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 15/1

11:15-18:30

1 stop12h 15m

Washington, D.C. Dulles Intl

Thu 22/1

19:40-09:55

1 stop9h 15m

£445

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Sun 1/2

19:10-17:15

1 stop27h 05m

Washington, D.C. Dulles Intl

Mon 16/2

20:30-18:30

1 stop17h 00m

£460

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Fri 30/1

07:55-15:35

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 6/2

17:05-13:50

1 stop15h 45m

£464

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 20/1

07:30-23:12

2 stops20h 42m

Washington, D.C. Dulles Intl

Sun 1/2

21:45-10:00

Nonstop7h 15m

£466

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Tue 27/1

07:00-18:30

1 stop16h 30m

Washington, D.C. Dulles Intl

Tue 3/2

19:40-14:50

1 stop14h 10m

£467

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Thu 26/2

06:00-18:30

1 stop17h 30m

Washington, D.C. Dulles Intl

Tue 3/3

19:40-14:50

1 stop14h 10m

£467

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 20/1

08:50-15:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Tue 3/2

21:45-10:00

Nonstop7h 15m

£469

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 24/1

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 1/2

19:40-10:55

1 stop10h 15m

£472

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 22/1

16:25-19:55

Nonstop8h 30m

Washington, D.C. Dulles Intl

Thu 5/2

21:45-10:00

Nonstop7h 15m

£472

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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 £259). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £525). 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 18 December 2025.

One of the essential ways to save on airfare from United Kingdom to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 9% on airfare.

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

Use this chart to determine the cheapest time to fly return from United Kingdom to Dulles Intl. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 18 December 2025.

The most flights from GB0 to IAD are scheduled on a Monday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 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 131 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?

Monday 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 8% 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 18 December 2025.
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
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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
1,399 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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
7.0
Good
591 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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
7,635 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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
7,585 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

Entertainment

7.5

Crew

8.2

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, Scandinavian Airlines, and British Airways can get you from United Kingdom to Washington, D.C. Dulles Intl Airport in just under 12h 15m. Your travel time can differ by up to 14h 50m. 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 £288. Users have also found prices from £324 and £376 on Icelandair 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 City - 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: KLM (92%), Air France (87%), Delta( 87%).

  • 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 £1,426, our data shows the cheapest flight currently is £449. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £329 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 £259). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £525). 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

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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
London City to Dulles Intl flights
Gatwick to Baltimore flights
Gatwick to Reagan-National flights
Stansted to Dulles Intl flights
Luton to Dulles Intl flights
Manchester to Dulles Intl flights
Manchester to Baltimore flights
Luton to Baltimore flights
Manchester to Reagan-National flights
Birmingham to Dulles Intl flights
Edinburgh to Dulles Intl flights
Stansted to Baltimore flights
Birmingham to Baltimore flights
Birmingham to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Glasgow Intl to Baltimore flights
Newcastle upon Tyne to Dulles Intl flights
London City to Baltimore flights
Edinburgh to Reagan-National flights
London City to Reagan-National flights
Edinburgh to Baltimore flights
Newcastle upon Tyne to Baltimore flights
Bristol to Dulles Intl flights
Southend to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Newcastle upon Tyne to Reagan-National flights
Leeds to Dulles Intl flights
Bristol to Baltimore flights
Inverness to Reagan-National flights
Inverness to Dulles Intl flights
Southampton to Baltimore flights
Bristol to Reagan-National flights
Frankfurt to Dulles Intl flights
Leeds to Baltimore flights
Southampton to Reagan-National flights
Belfast Intl to Baltimore flights
Belfast City to Reagan-National flights
Belfast Intl to Dulles Intl flights
Cardiff 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£189Average£519FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£350Average£517FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£366Average£595FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£366Average£698FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£373Average£548FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£384Average£670FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£407Average£675FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Scandinavian AirlinesCheapest£425Average£542FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£433Average£648FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£434Average£661FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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