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£371+ Cheap flights to Dulles Intl

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Flights to Dulles Intl in 2025

Find the latest flights to Dulles Intl in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 September 2025.

Return from

£393

One-way from

£371

Popular in

July

Cheapest in

February

Average price

£490

Good round-trip deal

£469 or less

Good one-way deal

£470 or less
United Airlines
  • United Airlines
  • 26/9-28/9
  • 1 total stop
  • 19h 50m total
  • London to Washington, D.C.
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5/12
  • 5/12
  • 2 total stops
  • 27h 45m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for return flights in September 2025
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Price to beat on a round-trip flight from London to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from London to Washington, D.C. Dulles Intl.
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Find flight deals to Dulles Intl Airport

Cheapest flights to Dulles Intl Airport
Explore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2025.

Fri 31/1009:00LHR - IAD
1 stop12h 40mUnited Airlines
Fri 7/1109:45IAD - LHR
1 stop16h 25mUnited Airlines
Deal found 16/9£393
Mon 27/1020:05LHR - IAD
1 stop23h 30mSWISS
Fri 7/1120:30IAD - LHR
1 stop14h 50mSWISS
Deal found 15/9£394
Thu 13/1121:20STN - IAD
2 stops26h 10mMultiple Airlines
Sun 30/1119:40IAD - STN
2 stops20h 15mMultiple Airlines
Deal found 16/9£394
Mon 22/919:30LHR - IAD
1 stop24h 05mAustrian Airlines
Sun 28/918:40IAD - LHR
Nonstop7h 15mAustrian Airlines
Deal found 15/9£394
Wed 5/1108:40LHR - IAD
2 stops19h 39mVirgin Atlantic
Sat 8/1119:59IAD - LHR
1 stop31h 06mVirgin Atlantic
Deal found 16/9£395
Thu 2/1009:30LHR - IAD
1 stop11h 20mUnited Airlines
Tue 7/1018:40IAD - LHR
Nonstop7h 15mUnited Airlines
Deal found 15/9£396
Thu 23/1008:55LGW - IAD
1 stop15h 00mMultiple Airlines
Mon 27/1018:05IAD - LGW
1 stop11h 10mMultiple Airlines
Deal found 13/9£396
Mon 10/1106:10STN - IAD
2 stops17h 20mMultiple Airlines
Fri 14/1119:40IAD - STN
2 stops20h 05mMultiple Airlines
Deal found 15/9£396
Sun 21/908:30LHR - IAD
1 stop11h 45mUnited Airlines
Mon 6/1006:15IAD - LHR
1 stop9h 25mUnited Airlines
Deal found 14/9£397
Thu 2/1006:50LHR - IAD
2 stops14h 28mAir Canada
Sun 7/1213:20IAD - LHR
1 stop12h 50mAir Canada
Deal found 13/9£397
Fri 3/1015:40LGW - IAD
1 stop11h 30mIcelandair
Sun 5/1023:15IAD - LGW
1 stop10h 25mIcelandair
Deal found 14/9£397
Tue 7/1007:30LHR - IAD
1 stop13h 20mUnited Airlines
Wed 15/1006:15IAD - LHR
1 stop9h 25mUnited Airlines
Deal found 14/9£398

Cheapflights Fare Finder

 
Locate flights to Dulles Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 September 2025.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/3

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Wed 11/3

19:20-06:40

Nonstop7h 20m

£393

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 8/12

07:40-15:35

1 stop12h 55m

Washington, D.C. Dulles Intl

Tue 13/1

18:20-06:40

Nonstop7h 20m

£394

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 6/11

14:50-14:40

1 stop28h 50m

Washington, D.C. Dulles Intl

Wed 12/11

18:20-06:40

Nonstop7h 20m

£395

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 9/10

09:30-15:50

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 13/10

22:25-10:40

Nonstop7h 15m

£396

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 11/12

12:05-23:21

2 stops16h 16m

Washington, D.C. Dulles Intl

Tue 13/1

17:38-08:25

1 stop9h 47m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 29/10

08:30-16:50

1 stop12h 20m

Washington, D.C. Dulles Intl

Wed 5/11

08:45-07:10

2 stops17h 25m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 7/12

06:30-15:50

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 13/1

22:15-10:50

Nonstop7h 35m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 23/11

06:50-14:35

1 stop12h 45m

Washington, D.C. Dulles Intl

Tue 2/12

18:20-06:40

Nonstop7h 20m

£398

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 29/9

06:30-13:30

1 stop12h 00m

Washington, D.C. Dulles Intl

Sun 5/10

08:16-06:35

2 stops17h 19m

£402

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 31/10

13:05-17:40

2 stops32h 35m

Washington, D.C. Dulles Intl

Fri 7/11

16:25-15:25

2 stops18h 00m

£410

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 results
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Best time to book a flight to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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 to Washington, D.C. Dulles Intl Airport

When is the best time to book a flight to Dulles Intl?

Use this chart to determine the optimal time to book a return flight from London to Dulles Intl. Price data was last updated on 12 September 2025.

Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights to Dulles Intl. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

How long is the flight to Dulles Intl?

On average, a flight from London to Dulles Intl takes 13 hours 50 minutes. Flights to Dulles Intl from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Dulles Intl?

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

Users looking for the lowest fares to Dulles Intl should consider flying on Monday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Tuesday at midday, when prices are usually at their highest.

Weekly flight availability to Dulles Intl

The most flights from London to Dulles Intl are scheduled on a Monday (28 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

What are the most popular airlines that fly to Dulles Intl?

The most popular airlines flying from London to Dulles Intl are British Airways, Virgin Atlantic and Lufthansa.

British Airways
British Airways
From £599
Virgin Atlantic
Virgin Atlantic
From £590
Aer Lingus
Aer Lingus
From £535
Lufthansa
Lufthansa
From £490

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airlines flying from London to Dulles Intl are Delta, PLAY and Icelandair.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Dulles Intl ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Dulles Intl when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Dulles Intl, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 16 September 2025.
Check out reviews from past customers who have flown Virgin Atlantic, Aer Lingus, andIcelandair to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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
7.4
Good
664 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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
1,274 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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
544 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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
7,407 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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
7,363 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

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!

FAQs about flying to Dulles Intl

Washington Dulles International Airport handles close to 24 million passengers each year. This architecturally beautiful airport is situated 42km (26 miles) from downtown Washington DC and serves a metropolitan area that includes Washington, Baltimore and Northern Virginia.

Washington Dulles International Airport was named after John Foster Dulles who was a former US Secretary of State. The airport is well-connected to Washington and Virginia, it is also connected to more than 125 destinations around the world, making it a popular gateway to the eastern United States.

The airport has a range of shopping options including book shops, fashion, jewellery, gifts, gadgets and music. The duty-free shops at the Washington Dulles International Airport are well-stocked and the amenities are top-class.

The airport serves as a hub for United Airlines, however passengers can book flights to Washington Dulles International Airport on most major international and domestic airlines.

  • Can I find cheaper flights to Dulles Intl if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Dulles Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Dulles Intl?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to Dulles Intl.

  • What is the cheapest airport to fly to in Dulles Intl?

    Washington, D.C. Dulles Intl is currently the cheapest airport to fly to in Dulles Intl. One-way flights to Washington, D.C. Dulles Intl typically cost £46, while return flights cost around £78.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around £517, however they can be found for as little as £106.

  • Where does the fastest flight to Dulles Intl depart from?

    For those looking to save time traveling to Dulles Intl, Edinburgh Turnhouse offers the quickest one-way flight (8 hours 10 minutes).

  • Does Washington, D.C. Dulles Intl have car hire?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 mi away from Washington, D.C. Dulles Intl).

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
College Park
Tysons

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When you search for this flight 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 best flight for you.

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