Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £400
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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
27 8월 — 3 9월1
Return
1 adult
Economy
Cheapflights Tip: The best prices from London Gatwick to Washington, D.C. Dulles Intl are usually found in February or November, 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 22 8월 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 22 8월 2025.
월 22/916:25LGW - IAD
1 stop27h 55mTAP AIR PORTUGAL
월 29/922:20IAD - LGW
1 stop30h 25mTAP AIR PORTUGAL
Deal found 20/8£437
목 28/810:00LGW - IAD
1 stop14h 24mMultiple Airlines
금 19/915:15IAD - LGW
1 stop34h 45mMultiple Airlines
Deal found 20/8£437
월 6/1015:40LGW - IAD
1 stop32h 40mIcelandair
월 13/1020:30IAD - LGW
1 stop13h 05mIcelandair
Deal found 21/8£438
수 27/815:35LGW - IAD
1 stop11h 35mIcelandair
수 3/920:30IAD - LGW
1 stop10h 15mIcelandair
Deal found 20/8£440
목 4/914:00LGW - IAD
1 stop33h 19mMultiple Airlines
일 21/915:15IAD - LGW
1 stop34h 40mMultiple Airlines
Deal found 21/8£440
수 5/1113:10LGW - IAD
2 stops33h 05mMultiple Airlines
수 12/1120:30IAD - LGW
2 stops20h 10mMultiple Airlines
Deal found 21/8£443
목 4/914:50LGW - IAD
2 stops34h 09mMultiple Airlines
목 11/922:05IAD - LGW
2 stops18h 20mMultiple Airlines
Deal found 20/8£444
수 1/1017:25LGW - IAD
2 stops32h 25mMultiple Airlines
토 4/1017:00IAD - LGW
1 stop11h 45mMultiple Airlines
Deal found 20/8£446
일 5/1008:55LGW - IAD
2 stops15h 25mMultiple Airlines
일 12/1020:30IAD - LGW
2 stops19h 25mMultiple Airlines
Deal found 21/8£447
금 3/1015:40LGW - IAD
1 stop11h 30mIcelandair
월 13/1020:30IAD - LGW
1 stop13h 05mIcelandair
Deal found 20/8£448
Best flights from Gatwick to Dulles Intl
Discover carefully curated flight deals from Gatwick to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 8월 2025.
월 22/916:25LGW - IAD
1 stop27h 55mTAP AIR PORTUGAL
월 29/922:20IAD - LGW
1 stop30h 25mTAP AIR PORTUGAL
Deal found 20/8£437
화 2/921:45LGW - IAD
2 stops46h 35mMultiple Airlines
토 27/919:14IAD - LGW
1 stop33h 56mMultiple Airlines
Deal found 20/8£438
월 6/1015:40LGW - IAD
1 stop32h 40mIcelandair
월 13/1020:30IAD - LGW
1 stop13h 05mIcelandair
Deal found 21/8£438
토 20/914:00LGW - IAD
1 stop33h 14mMultiple Airlines
일 28/919:14IAD - LGW
2 stops30h 06mMultiple Airlines
Deal found 21/8£438
수 8/1015:40LGW - IAD
1 stop11h 30mIcelandair
월 13/1020:30IAD - LGW
1 stop13h 05mIcelandair
Deal found 20/8£440
목 4/914:00LGW - IAD
1 stop33h 19mMultiple Airlines
일 21/915:15IAD - LGW
1 stop34h 40mMultiple Airlines
Deal found 21/8£440
일 15/211:55LGW - IAD
1 stop11h 35mIcelandair
화 16/623:35IAD - LGW
1 stop10h 05mIcelandair
Deal found 20/8£445
수 5/1113:10LGW - IAD
2 stops33h 05mMultiple Airlines
수 12/1120:30IAD - LGW
2 stops20h 10mMultiple Airlines
Deal found 21/8£443
목 4/914:50LGW - IAD
2 stops34h 09mMultiple Airlines
목 11/922:05IAD - LGW
2 stops18h 20mMultiple Airlines
Deal found 20/8£444
수 1/1017:25LGW - IAD
2 stops32h 25mMultiple Airlines
토 4/1017:00IAD - LGW
1 stop11h 45mMultiple Airlines
Deal found 20/8£446
Last-minute flights from Gatwick to Dulles Intl
Discover last-minute flight deals from Gatwick to Dulles Intl. Data last updated 22 8월 2025 and is based on user searches.
화 26/815:40LGW - IAD
1 stop11h 30mIcelandair
목 16/1020:30IAD - LGW
1 stop13h 10mIcelandair
Deal found 21/8£452
수 27/815:35LGW - IAD
1 stop11h 35mIcelandair
수 3/920:30IAD - LGW
1 stop10h 15mIcelandair
Deal found 20/8£440
목 28/810:00LGW - IAD
1 stop14h 24mMultiple Airlines
금 19/915:15IAD - LGW
1 stop34h 45mMultiple Airlines
Deal found 20/8£437
토 30/813:00LGW - IAD
1 stop14h 10mIcelandair
화 2/923:15IAD - LGW
1 stop31h 30mIcelandair
Deal found 20/8£453
화 2/921:45LGW - IAD
2 stops46h 35mMultiple Airlines
토 27/919:14IAD - LGW
1 stop33h 56mMultiple Airlines
Deal found 20/8£438
수 3/916:30LGW - IAD
2 stops27h 50mMultiple Airlines
토 20/922:35IAD - LGW
1 stop30h 10mMultiple Airlines
Deal found 20/8£457
목 4/914:00LGW - IAD
1 stop33h 19mMultiple Airlines
일 21/915:15IAD - LGW
1 stop34h 40mMultiple Airlines
Deal found 21/8£440
목 4/914:50LGW - IAD
2 stops34h 09mMultiple Airlines
목 11/922:05IAD - LGW
2 stops18h 20mMultiple Airlines
Deal found 20/8£444
수 10/915:35LGW - IAD
1 stop11h 35mIcelandair
수 29/1020:40IAD - LGW
1 stop10h 15mIcelandair
Deal found 20/8£455
수 10/917:25LGW - IAD
2 stops32h 25mMultiple Airlines
토 13/922:35IAD - LGW
1 stop30h 10mMultiple Airlines
Deal found 20/8£455
토 20/914:00LGW - IAD
1 stop33h 14mMultiple Airlines
화 30/922:20IAD - LGW
1 stop12h 15mMultiple Airlines
Deal found 21/8£458
월 22/916:25LGW - IAD
1 stop27h 55mTAP AIR PORTUGAL
월 29/922:20IAD - LGW
1 stop30h 25mTAP AIR PORTUGAL
Deal found 20/8£437
One-way flights from Gatwick to Dulles Intl
Search for one-way flight options from Gatwick to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 22 8월 2025.
일 31/814:00LGW - IAD
2 stops30h 23mMultiple Airlines
Deal found 21/8£400
토 8/1116:35LGW - IAD
1 stop33h 25mTAP AIR PORTUGAL
Deal found 20/8£402
금 12/909:50LGW - IAD
3 stops34h 30mMultiple Airlines
Deal found 20/8£403
토 11/1020:40LGW - IAD
2 stops23h 40mMultiple Airlines
Deal found 21/8£405
화 2/913:00LGW - IAD
1 stop14h 10mIcelandair
Deal found 20/8£405
월 15/1214:00LGW - IAD
3 stops31h 13mMultiple Airlines
Deal found 21/8£407
월 9/214:00LGW - IAD
3 stops31h 13mMultiple Airlines
Deal found 20/8£408
금 3/1020:45LGW - IAD
2 stops23h 35mMultiple Airlines
Deal found 21/8£408
토 18/1021:15LGW - IAD
3 stops47h 05mMultiple Airlines
Deal found 20/8£411
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 22 8월 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
Gatwick
Fly to
Dulles Intl
Route
Depart
Return
Price
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
월 22/9
16:25-15:20
1 stop27h 55m
Washington, D.C. Dulles Intl
월 29/9
22:20-09:45
1 stop30h 25m
£437
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
화 2/9
21:45-15:20
2 stops46h 35m
Washington, D.C. Dulles Intl
토 27/9
19:14-10:10
1 stop33h 56m
£438
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
월 6/10
15:40-19:20
1 stop32h 40m
Washington, D.C. Dulles Intl
월 13/10
20:30-14:35
1 stop13h 05m
£438
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
토 20/9
14:00-18:14
1 stop33h 14m
Washington, D.C. Dulles Intl
일 28/9
19:14-06:20
2 stops30h 06m
£438
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
수 8/10
15:40-22:10
1 stop11h 30m
Washington, D.C. Dulles Intl
월 13/10
20:30-14:35
1 stop13h 05m
£440
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
목 4/9
14:00-18:19
1 stop33h 19m
Washington, D.C. Dulles Intl
일 21/9
15:15-06:55
1 stop34h 40m
£440
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
수 5/11
13:10-17:15
2 stops33h 05m
Washington, D.C. Dulles Intl
수 12/11
20:30-21:40
2 stops20h 10m
£443
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
목 4/9
14:50-19:59
2 stops34h 09m
Washington, D.C. Dulles Intl
목 11/9
22:05-21:25
2 stops18h 20m
£444
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
일 15/2
11:55-18:30
1 stop11h 35m
Washington, D.C. Dulles Intl
화 16/6
23:35-14:40
1 stop10h 05m
£445
LondonWashington, D.C.
LGW - IAD
LGWIAD
London Gatwick
수 1/10
17:25-20:50
2 stops32h 25m
Washington, D.C. Dulles Intl
토 4/10
17:00-09:45
1 stop11h 45m
£446
Flights are sorted by cheapest return flights first.
Deals found on 21/8
Showing 1-10 of 19 results
1
2
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.
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 from London Gatwick Airport to Washington, D.C. Dulles Intl Airport
Prices
More
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 8 August 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 22 8월 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.
How much does it cost for a return flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
What’s the top stopover airport for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Share of one-stop return flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 93% of one-stop itineraries from London Gatwick Airport to Washington, D.C. Dulles Intl Airport on Cheapflights.
What’s the fastest stopover option from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Shortest average travel time for one-stop one-way flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 50m.
What’s the fastest stopover option from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Shortest average travel time for one-stop one-way flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 50m.
Which airport typically offers the quickest stopover for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Average stopover duration for one-stop one-way flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 11m.
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 22 8월 2025.
See what other customers who have flown with Icelandair 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.
The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient
The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient
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.
How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
For as low as £437, TAP AIR PORTUGAL can have you in Washington, D.C. Dulles Intl Airport from London Gatwick Airport in 27h 55m. The distance from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is about 3683 mi. This flight may include one or multiple stops.
What is the cheapest airline to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport round-trip?
Our cheapest airline available from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £347 on this airline. Icelandair is 36% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for business class flights from Gatwick to Dulles Intl?
Yes. Cheapflights offers flight deals from Gatwick to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
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.
Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 22 8월 2025.
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 22 8월 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
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?
Yes! Cheapflights helps users easily find flights from Gatwick to Dulles Intl with no change fees.
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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.