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£388+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
13 lug — 20 lug1
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 8 luglio 2025.

Return from

£478

One-way from

£388

Popular in

July

Cheapest in

February

Average price

£656

Good round-trip deal

£534 or less

Good one-way deal

£588 or less
American Airlines
  • American Airlines
  • 31/8-9/9
  • Nonstop
  • 15h 35m total
  • London to Washington, D.C.
12/10
  • 12/10
  • 3 total stops
  • 41h 24m total
  • London to Washington, D.C.
Highest demand for flights based on searches. 14% potential increase in price (£65 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Average for return flights in July 2025
Price to beat on a round-trip flight from London to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from London to Washington, D.C. Dulles Intl.

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 8 luglio 2025.

dom 31/817:05LHR - IAD
Nonstop8h 10mAmerican Airlines
mar 9/917:50IAD - LHR
Nonstop7h 25mAmerican Airlines
Deal found 7/7£478
sab 11/1006:35LGW - IAD
2 stops20h 35mMultiple Airlines
dom 19/1023:15IAD - LGW
2 stops15h 40mMultiple Airlines
Deal found 7/7£479
lun 15/921:15LGW - IAD
2 stops23h 05mTAP AIR PORTUGAL
mar 23/917:00IAD - LGW
1 stop11h 45mTAP AIR PORTUGAL
Deal found 7/7£480
ven 29/809:25LCY - IAD
1 stop11h 50mSWISS
mar 9/917:25IAD - LCY
2 stops14h 05mSWISS
Deal found 7/7£480
sab 13/1218:30LHR - IAD
1 stop31h 30mTAP AIR PORTUGAL
sab 27/1217:30IAD - LHR
1 stop17h 00mTAP AIR PORTUGAL
Deal found 7/7£482
mar 2/908:40STN - IAD
2 stops34h 55mMultiple Airlines
mar 16/917:25IAD - STN
2 stops24h 35mMultiple Airlines
Deal found 7/7£482
gio 18/908:40LCY - IAD
1 stop11h 55mVirgin Atlantic
ven 26/917:25IAD - LCY
1 stop9h 45mVirgin Atlantic
Deal found 7/7£482
gio 23/1006:40LHR - IAD
1 stop18h 19mScandinavian Airlines
mer 5/1120:30IAD - LHR
2 stops14h 55mScandinavian Airlines
Deal found 6/7£483
lun 1/912:15LHR - IAD
Nonstop8h 15mUnited Airlines
mar 9/918:40IAD - LHR
Nonstop7h 15mUnited Airlines
Deal found 7/7£485
gio 18/908:45LCY - IAD
1 stop12h 05mMultiple Airlines
mer 1/1020:45IAD - LCY
1 stop10h 45mMultiple Airlines
Deal found 7/7£485
mer 27/819:00LTN - IAD
2 stops32h 10mMultiple Airlines
sab 6/920:30IAD - LTN
2 stops14h 15mMultiple Airlines
Deal found 6/7£487
dom 3/815:40LGW - IAD
1 stop32h 40mIcelandair
ven 15/823:15IAD - LGW
1 stop31h 30mIcelandair
Deal found 7/7£490

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 8 luglio 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

dom 31/8

17:05-20:15

Nonstop8h 10m

Washington, D.C. Dulles Intl

mar 9/9

17:50-06:15

Nonstop7h 25m

£478

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

sab 11/10

06:35-22:10

2 stops20h 35m

Washington, D.C. Dulles Intl

dom 19/10

23:15-19:55

2 stops15h 40m

£479

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

lun 15/9

21:15-15:20

2 stops23h 05m

Washington, D.C. Dulles Intl

mar 23/9

17:00-09:45

1 stop11h 45m

£480

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

ven 29/8

09:25-16:15

1 stop11h 50m

Washington, D.C. Dulles Intl

mar 9/9

17:25-12:30

2 stops14h 05m

£480

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

gio 18/9

08:40-15:35

1 stop11h 55m

Washington, D.C. Dulles Intl

ven 26/9

17:25-08:10

1 stop9h 45m

£482

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sab 13/12

18:30-21:00

1 stop31h 30m

Washington, D.C. Dulles Intl

sab 27/12

17:30-15:30

1 stop17h 00m

£482

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

mar 2/9

08:40-14:35

2 stops34h 55m

Washington, D.C. Dulles Intl

mar 16/9

17:25-23:00

2 stops24h 35m

£482

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

gio 23/10

06:40-19:59

1 stop18h 19m

Washington, D.C. Dulles Intl

mer 5/11

20:30-16:25

2 stops14h 55m

£483

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

lun 1/9

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

mar 9/9

18:40-06:55

Nonstop7h 15m

£485

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

gio 18/9

08:45-15:50

1 stop12h 05m

Washington, D.C. Dulles Intl

mer 1/10

20:45-12:30

1 stop10h 45m

£485

Flights are sorted by cheapest return flights first.

Deals found on 5/7

Showing 1-10 of 42 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 27 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 12 hours 1 minute. 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 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 (27 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (21 on average).

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 8 luglio 2025.
Check out reviews from past customers who have flown Delta, KLM, andAustrian Airlines 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.

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 £43, while return flights cost around £135.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around £2,681, however they can be found for as little as £184.

  • 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 5 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
Arlington
Woodbridge
College Park
Laurel
Tysons

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