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Cheap flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport from £264

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LGW
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Gatwick

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Gatwick
Explore the most affordable flight options available from Dulles Intl to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2026.

Mon 20/422:35
IAD
-
LGW
2 stops16h 50m
TAP AIR PORTUGAL
Thu 30/414:50
LGW
-
IAD
1 stop29h 20m
TAP AIR PORTUGAL
Deal found 20/3£472
Sun 19/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Tue 5/521:15
LGW
-
IAD
2 stops22h 55m
TAP AIR PORTUGAL
Deal found 23/3£475
Mon 20/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Mon 4/516:25
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 22/3£478
Mon 20/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Wed 29/416:25
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 22/3£484
Sun 19/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Sun 26/421:15
LGW
-
IAD
2 stops46h 55m
TAP AIR PORTUGAL
Deal found 20/3£487
Mon 27/422:35
IAD
-
LGW
1 stop12h 00m
TAP AIR PORTUGAL
Wed 6/516:25
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 25/3£490
Mon 4/522:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Mon 11/516:25
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 20/3£490
Wed 22/422:35
IAD
-
LGW
1 stop30h 10m
TAP AIR PORTUGAL
Wed 29/416:25
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 24/3£493

Find flight deals from Dulles Intl to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Gatwick (LGW). 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 25 March 2026.

Round-trip from

£472

One-way from

£264

Popular in

June

Cheapest in

February

Average price

£495
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 20/4-30/4
  • 3 total stops
  • 46h 10m total
  • Washington, D.C. to London
Search Deals
16/6
  • 16/6
  • 2 total stops
  • 24h 40m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl to Gatwick 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 25 March 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 10/8

19:59-16:00

2 stops15h 01m

London Gatwick

Thu 20/8

10:25-19:35

1 stop14h 10m

£609
Fastest return journey

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 20/8

18:15-09:25

1 stop10h 10m

London Gatwick

Thu 27/8

10:25-19:35

1 stop14h 10m

£643

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 8/5

19:33-16:00

2 stops15h 27m

London Gatwick

Fri 15/5

10:25-21:24

2 stops15h 59m

£654

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 13/5

21:45-16:00

1 stop13h 15m

London Gatwick

Sat 23/5

10:25-19:35

1 stop14h 10m

£678

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 16/4

21:45-16:00

1 stop13h 15m

London Gatwick

Sun 19/4

10:25-19:35

1 stop14h 10m

£680

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 14/8

21:45-16:00

1 stop13h 15m

London Gatwick

Sat 22/8

10:25-19:35

1 stop14h 10m

£680

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 2/8

18:15-09:25

1 stop10h 10m

London Gatwick

Sat 15/8

10:25-19:35

1 stop14h 10m

£716

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 19/5

21:45-16:00

1 stop13h 15m

London Gatwick

Wed 27/5

10:25-00:51

2 stops19h 26m

£719

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 25/7

19:55-16:00

2 stops15h 05m

London Gatwick

Wed 5/8

10:25-19:35

1 stop14h 10m

£747

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 25/7

19:55-16:00

2 stops15h 05m

London Gatwick

Tue 11/8

10:35-19:35

1 stop14h 00m

£747

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Gatwick

Have a flexible travel schedule? Discover the best time to fly to Gatwick from 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 from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of £271). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of £743). 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.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Gatwick. 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 Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

    Departing from Washington, D.C. Dulles Intl Airport to London Gatwick Airport will take you 15h 01m. Airlines will cover a distance of 3683 mi.

  • Can I find deals for flights from Dulles Intl to Gatwick that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Gatwick flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Gatwick?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Gatwick.

  • Can I find deals for business class flights from Dulles Intl to Gatwick?

    Yes. Cheapflights offers flight deals from Dulles Intl to Gatwick 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 Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of £271). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of £743). 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.

See more FAQs

Travelling to a place near London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Bedford
Chelmsford
Bishop's Stortford

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How does Cheapflights help users find flights from Dulles Intl to Gatwick?

When you search for this flight from Dulles Intl to Gatwick, 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 Dulles Intl to Gatwick?

Cheapflights helps you find that perfect flight to Gatwick from Dulles Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Dulles Intl to Gatwick with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dulles Intl to Gatwick, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Dulles Intl to Gatwick flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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