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Cheap flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport from £186

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LGW
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 27 October 2025.

Round-trip from

£421

One-way from

£186

Popular in

December

Cheapest in

November

Average price

£514
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 29/1-1/2
  • 3 total stops
  • 34h 15m total
  • Washington, D.C. to London
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13/12
  • 13/12
  • 1 total stop
  • 31h 40m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find 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 27 October 2025.

Thu 11/1217:30IAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Tue 16/1221:20LGW - IAD
2 stops46h 55mTAP AIR PORTUGAL
Deal found 25/10£424
Sat 29/1117:30IAD - LGW
2 stops22h 10mTAP AIR PORTUGAL
Sun 7/1210:40LGW - IAD
1 stop33h 35mTAP AIR PORTUGAL
Deal found 26/10£425
Sun 9/1121:00IAD - LGW
1 stop10h 45mMultiple Airlines
Tue 11/1108:50LGW - IAD
1 stop11h 45mMultiple Airlines
Deal found 26/10£426
Sat 13/1221:20IAD - LGW
1 stop31h 40mMultiple Airlines
Thu 8/114:00LGW - IAD
1 stop29h 38mMultiple Airlines
Deal found 25/10£431
Wed 19/1109:45IAD - LGW
3 stops29h 10mMultiple Airlines
Mon 24/1117:55LGW - IAD
2 stops26h 55mMultiple Airlines
Deal found 26/10£432
Tue 30/1219:40IAD - LGW
1 stop10h 15mIcelandair
Tue 13/111:55LGW - IAD
1 stop11h 35mIcelandair
Deal found 25/10£433
Thu 27/1119:40IAD - LGW
1 stop10h 15mIcelandair
Tue 2/1211:55LGW - IAD
1 stop11h 35mIcelandair
Deal found 25/10£433
Sun 7/1222:30IAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Sun 14/1210:40LGW - IAD
1 stop15h 20mTAP AIR PORTUGAL
Deal found 25/10£434
Sat 6/1217:30IAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Sat 13/1216:35LGW - IAD
1 stop33h 25mTAP AIR PORTUGAL
Deal found 25/10£435
Sun 30/1122:30IAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Tue 9/1216:35LGW - IAD
1 stop33h 25mTAP AIR PORTUGAL
Deal found 25/10£436
Mon 10/1122:55IAD - LGW
2 stops17h 05mMultiple Airlines
Mon 17/1109:40LGW - IAD
2 stops36h 00mMultiple Airlines
Deal found 25/10£436
Fri 5/1221:20IAD - LGW
1 stop31h 45mMultiple Airlines
Fri 12/1206:50LGW - IAD
2 stops19h 10mMultiple Airlines
Deal found 26/10£437

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 27 October 2025.
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

Dulles Intl

Fly to

Gatwick

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 7/12

22:30-15:45

1 stop12h 15m

London Gatwick

Sun 14/12

10:40-21:00

1 stop15h 20m

£434

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 23/1

22:30-15:45

1 stop12h 15m

London Gatwick

Sat 31/1

10:10-21:00

2 stops39h 50m

£451

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 1/3

18:00-19:15

2 stops20h 15m

London Gatwick

Mon 9/3

19:55-17:30

2 stops25h 35m

£455

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 13/2

22:30-15:45

1 stop12h 15m

London Gatwick

Tue 17/2

21:20-21:00

2 stops28h 40m

£485

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 30/12

17:30-09:25

2 stops34h 55m

London Gatwick

Tue 13/1

16:35-21:00

1 stop33h 25m

£487

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 22/3

23:30-15:45

1 stop12h 15m

London Gatwick

Sat 28/3

16:35-15:05

1 stop26h 30m

£487

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 9/12

17:30-09:50

1 stop11h 20m

London Gatwick

Tue 16/12

21:20-21:00

2 stops28h 40m

£487

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 10/4

20:45-17:50

1 stop16h 05m

London Gatwick

Tue 14/4

18:35-16:20

1 stop26h 45m

£499

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 25/11

17:30-09:50

1 stop11h 20m

London Gatwick

Thu 11/12

10:10-21:00

2 stops39h 50m

£547

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 8/12

17:30-08:35

2 stops34h 05m

£189

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 21 results
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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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of £324). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of £739). 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.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

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 12h 15m. 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of £324). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of £739). 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
Croydon
Slough
Gatwick
Hounslow
Luton
Wembley
Ilford
Deal
Hayes
Colchester
Watford
Crawley
Winchester
Chichester
Romford
Ipswich
Bedford
Brentford
Dartford

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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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