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£301+ 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 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
30 Mar — 6 Apr1
1 adult

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 25 March 2025.

Return from

£350

One-way from

£301

Popular in

July

Cheapest in

February

Average price

£525

Good round-trip deal

£541 or less

Good one-way deal

£631 or less
PLAY
  • PLAY
  • 28/4-6/5
  • 2 total stops
  • 21h 50m total
  • London to Washington, D.C.
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16/5
  • 16/5
  • 1 total stop
  • 26h 42m total
  • London to Washington, D.C.
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Highest demand for flights based on searches. 12% potential increase in price (£62 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
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Average for return flights in March 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 25 March 2025.

Thu 8/513:10STN - IAD
2 stops35h 49mMultiple Airlines
Thu 15/522:05IAD - STN
2 stops19h 20mMultiple Airlines
Deal found 24/3£421
Thu 8/508:55LGW - IAD
2 stops16h 04mMultiple Airlines
Thu 15/522:05IAD - LGW
2 stops18h 20mMultiple Airlines
Deal found 24/3£426
Tue 29/412:15LHR - IAD
Nonstop8h 10mLufthansa
Sat 10/522:26IAD - LHR
1 stop17h 14mLufthansa
Deal found 23/3£427
Fri 25/414:10LHR - IAD
1 stop29h 01mAustrian Airlines
Sat 26/417:47IAD - LHR
1 stop36h 23mAustrian Airlines
Deal found 24/3£428
Tue 25/320:40LHR - IAD
1 stop26h 45mIcelandair
Mon 31/320:30IAD - LHR
1 stop10h 25mIcelandair
Deal found 24/3£433
Thu 24/415:40LGW - IAD
1 stop32h 40mIcelandair
Wed 30/420:30IAD - LGW
1 stop10h 15mIcelandair
Deal found 24/3£438
Fri 9/506:40LHR - IAD
1 stop18h 19mScandinavian Airlines
Fri 16/522:05IAD - LHR
1 stop12h 55mScandinavian Airlines
Deal found 25/3£442
Fri 9/516:15LTN - IAD
2 stops32h 44mMultiple Airlines
Fri 16/522:05IAD - LTN
2 stops19h 50mMultiple Airlines
Deal found 25/3£443
Fri 9/513:35SEN - IAD
2 stops35h 24mMultiple Airlines
Fri 16/522:05IAD - SEN
2 stops19h 55mMultiple Airlines
Deal found 25/3£483
Fri 28/316:20LHR - IAD
Nonstop8h 20mUnited Airlines
Sat 29/317:52IAD - LHR
1 stop31h 38mUnited Airlines
Deal found 24/3£488
Mon 3/1106:00LHR - IAD
1 stop14h 15mTAP AIR PORTUGAL
Sat 8/1117:30IAD - LHR
1 stop20h 25mTAP AIR PORTUGAL
Deal found 25/3£500
Wed 1/1021:15LGW - IAD
2 stops23h 05mTAP AIR PORTUGAL
Sat 25/1017:00IAD - LGW
1 stop12h 50mTAP AIR PORTUGAL
Deal found 24/3£503

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 25 March 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.

STN - IAD

STNIAD

London Stansted

Thu 8/5

13:10-19:59

2 stops35h 49m

Washington, D.C. Dulles Intl

Thu 15/5

22:05-22:25

2 stops19h 20m

£421

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/5

08:55-19:59

2 stops16h 04m

Washington, D.C. Dulles Intl

Thu 15/5

22:05-21:25

2 stops18h 20m

£426

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 29/4

12:15-15:25

Nonstop8h 10m

Washington, D.C. Dulles Intl

Sat 10/5

22:26-20:40

1 stop17h 14m

£427

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 25/4

16:40-19:50

Nonstop8h 10m

Washington, D.C. Dulles Intl

Sat 26/4

17:47-11:10

1 stop36h 23m

£428

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 24/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 30/4

20:30-11:45

1 stop10h 15m

£438

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 9/5

06:40-19:59

1 stop18h 19m

Washington, D.C. Dulles Intl

Fri 16/5

22:05-16:00

1 stop12h 55m

£442

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 9/5

16:15-19:59

2 stops32h 44m

Washington, D.C. Dulles Intl

Fri 16/5

22:05-22:55

2 stops19h 50m

£443

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 24/4

13:05-19:20

1 stop11h 15m

Washington, D.C. Dulles Intl

Wed 30/4

20:30-20:20

1 stop18h 50m

£452

LondonWashington, D.C.

SEN - IAD

SENIAD

London Southend

Fri 9/5

13:35-19:59

2 stops35h 24m

Washington, D.C. Dulles Intl

Fri 16/5

22:05-23:00

2 stops19h 55m

£483

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 5/5

16:25-15:20

1 stop27h 55m

Washington, D.C. Dulles Intl

Thu 7/8

22:20-09:45

1 stop30h 25m

£515

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 56 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 21 March 2025.

Booking 75 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 14 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 2 June 2024.

Users looking for the lowest fares to Dulles Intl should consider flying on Tuesday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Friday afternoons, 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 (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 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 £625

Virgin Atlantic

Virgin Atlantic

From £643

Lufthansa

Lufthansa

From £650

Icelandair

Icelandair

From £466

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airlines flying from London to Dulles Intl are PLAY, Delta 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 25 March 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair to Washington, D.C. by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,266 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.5
Good
769 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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, PLAY 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 £17, while return flights cost around £70.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around £169, however they can be found for as little as £91.

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

    For those looking to save time traveling to Dulles Intl, London offers the quickest one-way flight (8 hours 0 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
Arlington
Woodbridge
College Park
Laurel
Tysons

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

Not ready to book yet? You can track prices for flights to Dulles Intl on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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