£304+ 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 20/6. Fares are subject to change and may not be available on all flights or dates of travel.
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 13 June 2025.
Find flight deals to Dulles Intl Airport
Cheapest flights to Dulles Intl AirportExplore 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 13 June 2025.
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 13 June 2025.
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 13 June 2025.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Route
Depart
Return
Price
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 22/11
12:10-15:35
Nonstop8h 25m
Washington, D.C. Dulles Intl
Sat 29/11
18:15-06:30
Nonstop7h 15m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 4/10
19:40-11:33
2 stops20h 53m
Washington, D.C. Dulles Intl
Sat 18/10
20:09-06:20
2 stops29h 11m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 27/9
10:20-19:59
1 stop14h 39m
Washington, D.C. Dulles Intl
Sat 4/10
22:05-18:30
1 stop15h 25m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sun 19/10
19:50-15:20
1 stop24h 30m
Washington, D.C. Dulles Intl
Wed 29/10
23:30-21:35
1 stop18h 05m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 19/7
08:30-09:37
1 stop30h 07m
Washington, D.C. Dulles Intl
Sun 20/7
17:31-10:10
1 stop11h 39m
LondonWashington, D.C.
LCY - IAD
LCYIAD
London City
Mon 24/11
10:00-15:45
1 stop10h 45m
Washington, D.C. Dulles Intl
Mon 8/12
17:35-08:10
1 stop9h 35m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Tue 12/8
12:35-16:00
Nonstop8h 25m
Washington, D.C. Dulles Intl
Wed 10/9
17:50-06:20
Nonstop7h 30m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Thu 28/8
10:35-20:50
1 stop15h 15m
Washington, D.C. Dulles Intl
Mon 1/9
22:20-15:35
1 stop12h 15m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Wed 27/8
12:00-19:43
1 stop12h 43m
Washington, D.C. Dulles Intl
Thu 4/9
12:13-10:00
1 stop16h 47m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Thu 3/7
12:40-10:16
3 stops26h 36m
Washington, D.C. Dulles Intl
Tue 8/7
16:10-06:30
2 stops33h 20m
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.
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 9 June 2025.
Booking 80 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 11 hours 35 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 Wednesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 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.
What are the cheapest airlines that fly to Dulles Intl?
The cheapest airlines flying from London to Dulles Intl are Delta, PLAY and TAP AIR PORTUGAL.
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 13 June 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines 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.
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
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Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights to Dulles Intl for you. Better yet — we are completely free to use.
Can Cheapflights find flights to Dulles Intl with no change fees?
Yes, we can. To see specific flights to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.
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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.