Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £388
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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from London Gatwick to Washington, D.C. Dulles Intl are usually found in February or April, booked 54 days in advance, depart on a Tuesday or Thursday and return on a Monday
Cheap flight deals from Gatwick to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 July 2025.
Round-trip from | £481 |
---|---|
One-way from | £388 |
Popular in | July |
Cheapest in | February |
Average price | £765 |
Find flight deals from Gatwick to Dulles Intl
Cheapest flights from Gatwick to Dulles IntlExplore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Explore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Gatwick 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 4 July 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Thu 21/8
10:35-15:20
1 stop33h 45m
Washington, D.C. Dulles Intl
Sun 24/8
17:45-15:10
1 stop16h 25m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Sun 10/8
15:40-19:20
1 stop32h 40m
Washington, D.C. Dulles Intl
Fri 15/8
23:15-11:45
1 stop31h 30m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Fri 22/8
10:00-19:24
1 stop14h 24m
Washington, D.C. Dulles Intl
Tue 26/8
23:15-14:40
1 stop10h 25m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Mon 18/8
12:00-19:43
1 stop12h 43m
Washington, D.C. Dulles Intl
Mon 25/8
06:00-10:00
2 stops23h 00m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Mon 13/10
18:35-16:15
1 stop26h 40m
Washington, D.C. Dulles Intl
Mon 3/11
22:20-17:50
2 stops14h 30m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Sat 23/8
10:45-11:07
2 stops29h 22m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Mon 13/10
10:35-20:50
1 stop15h 15m
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
Mon 8/9
15:40-19:20
1 stop32h 40m
Best time to book a flight from Gatwick to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Gatwick with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport
How far ahead should I book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the optimal time to book a return flight from Gatwick to Dulles Intl. Price data was last updated on 27 June 2025.
To ensure you get the cheapest price possible for a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of £599). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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 LGW to IAD?
Find hourly flight availability from Gatwick 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 4 July 2025.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport by exploring options for tickets at midday.
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 4 July 2025.
See what other customers who have flown with SWISS, Virgin Atlantic, andTAP AIR PORTUGAL from London Gatwick Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
Anonymous,Aug 2024
BLQ - ZRH
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
Anonymous,Aug 2024
BLQ - ZRH
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
Anonymous,Aug 2024
BLQ - ZRH
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
Anonymous,Aug 2024
BLQ - ZRH
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
Anonymous,Aug 2024
BLQ - ZRH
Related info for your journey
Find useful and relevant information for your journey from Gatwick to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Gatwick to Dulles Intl
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Top airline flying from Gatwick to Dulles Intl
Discover the top airline that operate flights from Gatwick 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 4 July 2025.
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How does Cheapflights help users find flights from Gatwick to Dulles Intl?
When you search for this flight from Gatwick 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 Gatwick to Dulles Intl?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Gatwick to Dulles Intl.
Can Cheapflights find flights from Gatwick to Dulles Intl with no change fees?
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Can Cheapflights notify me if prices for flights from Gatwick to Dulles Intl become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Gatwick today and book when prices fit your budget.