What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport round-trip?

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to London Gatwick Airport is Icelandair. Our recent data shows that you can find tickets from as low as $481 on this airline. This flight start at 32% lower than the current average price 3 months from now.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to London Gatwick Airport flight should consider departing on Sunday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in London Gatwick Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Gatwick Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Gatwick Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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

The best pricing can be found in the month of January. Prices to London Gatwick Airport from Washington, D.C. Dulles Intl Airport average $732. You can even find prices in January for less than $732, as users have found deals to London Gatwick Airport from as low as $389. The month of June appears to be one of the more expensive times to travel to London Gatwick Airport from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 29%.

What is the cheapest time of day to fly from IAD to LGW?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the morning.

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 vacation 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.

$260+ Flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Q: How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Airfare is below average for this route at the moment. Washington, D.C. Dulles Intl Airport to London Gatwick Airport flights typically cost between $533 and $560 in October. The cheapest round-trip price found within the last 3 days was $496 on Icelandair (Oct 1-Oct 9).

Q: What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Sunday flights are generally found to be more expensive for flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Gatwick Airport.

Q: How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Travelers have found it’s best to book a flight 48 days in advance to save up to 36% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 48 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport 1-2 weeks in advance for as low as $743, or $878 for flights within the next 24 hours.

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Cheap flight deals from Dulles Intl to Gatwick

Round-trip from	$496 (FlightHub)
One-way from	$260 (Booking.com)
Popular in	December
Cheapest in	November
Average price	$546

From Washington, D.C. Dulles Intl to London Gatwick

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One-way flight from Washington, D.C. Dulles Intl to London Gatwick

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High demand for flights, 0% potential price rise

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Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Dulles Intl to Gatwick

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 August 14, 2025.

Thu 12/45:30 pmIAD - LGW

1 stop17h 20mTAP AIR PORTUGAL

Fri 12/1210:40 amLGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 8/14

$504

Mon 10/1310:20 pmIAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Wed 12/310:40 amLGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 8/14

$505

Wed 10/1510:05 pmIAD - LGW

2 stops19h 25mMultiple Airlines

Wed 10/221:55 pmLGW - IAD

2 stops35h 04mMultiple Airlines

Deal found 8/14

$507

Thu 10/910:05 pmIAD - LGW

3 stops20h 00mMultiple Airlines

Tue 10/148:20 pmLGW - IAD

2 stops28h 39mMultiple Airlines

Deal found 8/14

$508

Wed 10/85:50 pmIAD - LGW

2 stops21h 40mTAP AIR PORTUGAL

Wed 10/224:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 8/14

$510

Wed 10/155:50 pmIAD - LGW

2 stops21h 40mTAP AIR PORTUGAL

Mon 10/204:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 8/13

$511

Wed 12/1010:30 pmIAD - LGW

1 stop11h 35mTAP AIR PORTUGAL

Wed 12/179:35 amLGW - IAD

2 stops16h 25mTAP AIR PORTUGAL

Deal found 8/14

$512

Wed 12/310:30 pmIAD - LGW

1 stop11h 35mTAP AIR PORTUGAL

Wed 12/109:35 amLGW - IAD

2 stops16h 25mTAP AIR PORTUGAL

Deal found 8/14

$513

Mon 9/298:30 pmIAD - LGW

1 stop13h 05mIcelandair

Sun 10/123:40 pmLGW - IAD

1 stop11h 30mIcelandair

Deal found 8/13

$514

Mon 9/85:20 pmIAD - LGW

1 stop10h 45mMultiple Airlines

Thu 9/118:55 amLGW - IAD

1 stop11h 55mMultiple Airlines

Deal found 8/13

$515

Mon 11/105:30 pmIAD - LGW

2 stops22h 05mTAP AIR PORTUGAL

Sun 2/810:40 amLGW - IAD

1 stop33h 35mTAP AIR PORTUGAL

Deal found 8/14

$517

Wed 9/35:20 pmIAD - LGW

1 stop12h 20mMultiple Airlines

Wed 9/109:45 amLGW - IAD

1 stop11h 05mMultiple Airlines

Deal found 8/13

$518

Best flights from Dulles Intl to Gatwick
Discover carefully curated flight deals from Dulles Intl to Gatwick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Wed 9/2411:15 pmIAD - LGW

1 stop10h 25mIcelandair

Fri 10/33:40 pmLGW - IAD

1 stop11h 30mIcelandair

Deal found 8/12

$498

Sun 10/1910:20 pmIAD - LGW

1 stop11h 50mTAP AIR PORTUGAL

Sun 10/2610:40 amLGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 8/12

$504

Fri 9/198:30 pmIAD - LGW

1 stop13h 10mIcelandair

Tue 9/303:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/11

$500

Wed 1/2810:30 pmIAD - LGW

1 stop11h 35mTAP AIR PORTUGAL

Wed 2/410:40 amLGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 8/12

$505

Wed 9/38:30 pmIAD - LGW

1 stop10h 15mIcelandair

Wed 10/223:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/12

$503

Tue 9/238:30 pmIAD - LGW

1 stop13h 10mIcelandair

Tue 9/303:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/11

$503

Fri 9/1911:15 pmIAD - LGW

1 stop10h 25mIcelandair

Wed 9/243:35 pmLGW - IAD

1 stop11h 35mIcelandair

Deal found 8/12

$504

Tue 9/211:15 pmIAD - LGW

1 stop31h 30mIcelandair

Wed 10/223:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/12

$505

Tue 9/98:30 pmIAD - LGW

1 stop13h 10mIcelandair

Sat 9/203:40 pmLGW - IAD

1 stop11h 30mIcelandair

Deal found 8/12

$505

Thu 9/411:15 pmIAD - LGW

1 stop31h 30mIcelandair

Wed 10/223:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/12

$505

Tue 8/268:30 pmIAD - LGW

1 stop13h 10mIcelandair

Tue 9/163:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/11

$506

Sat 9/68:30 pmIAD - LGW

1 stop13h 10mIcelandair

Tue 9/163:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/11

$507

Last-minute flights from Dulles Intl to Gatwick
Discover last-minute flight deals from Dulles Intl to Gatwick. Data last updated August 14, 2025 and is based on user searches.

Tue 8/1910:20 pmIAD - LGW

1 stop30h 25mTAP AIR PORTUGAL

Tue 8/264:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 8/14

$595

Tue 8/1911:15 pmIAD - LGW

1 stop10h 25mIcelandair

Tue 8/261:00 pmLGW - IAD

1 stop14h 10mIcelandair

Deal found 8/13

$645

Wed 8/205:50 pmIAD - LGW

1 stop15h 10mTAP AIR PORTUGAL

Wed 9/104:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 8/14

$605

Wed 8/205:50 pmIAD - LGW

1 stop15h 10mTAP AIR PORTUGAL

Wed 8/274:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 8/13

$627

Thu 8/2111:15 pmIAD - LGW

1 stop31h 30mIcelandair

Tue 9/23:40 pmLGW - IAD

1 stop11h 30mIcelandair

Deal found 8/13

$600

Thu 8/2111:15 pmIAD - LGW

1 stop31h 30mIcelandair

Tue 8/261:00 pmLGW - IAD

1 stop14h 10mIcelandair

Deal found 8/13

$611

Thu 8/2111:15 pmIAD - LGW

1 stop31h 30mIcelandair

Thu 8/283:40 pmLGW - IAD

1 stop11h 30mIcelandair

Deal found 8/14

$631

Thu 8/2111:15 pmIAD - LGW

1 stop31h 30mIcelandair

Wed 8/273:35 pmLGW - IAD

1 stop11h 35mIcelandair

Deal found 8/13

$634

Thu 8/216:10 amIAD - LGW

2 stops19h 50mMultiple Airlines

Thu 8/2810:00 amLGW - IAD

1 stop14h 24mMultiple Airlines

Deal found 8/14

$648

Sun 8/2411:15 pmIAD - LGW

1 stop31h 30mIcelandair

Tue 9/21:00 pmLGW - IAD

1 stop11h 20mIcelandair

Deal found 8/13

$646

Sat 8/308:30 pmIAD - LGW

1 stop10h 15mIcelandair

Sat 9/133:40 pmLGW - IAD

1 stop32h 40mIcelandair

Deal found 8/13

$551

Wed 9/35:20 pmIAD - LGW

1 stop12h 20mMultiple Airlines

Wed 9/109:45 amLGW - IAD

1 stop11h 05mMultiple Airlines

Deal found 8/13

$518

One-way flights from Dulles Intl to Gatwick
Search for one-way flight options from Dulles Intl to Gatwick. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Sat 9/610:35 pmIAD - LGW

1 stop30h 10mTAP AIR PORTUGAL

Deal found 8/14

$260

Wed 10/85:50 pmIAD - LGW

2 stops20h 50mMultiple Airlines

Deal found 8/14

$261

Thu 10/210:20 pmIAD - LGW

2 stops19h 45mMultiple Airlines

Deal found 8/14

$262

Sat 10/1110:20 amIAD - LGW

3 stops18h 05mMultiple Airlines

Deal found 8/12

$264

Thu 9/2510:20 pmIAD - LGW

1 stop30h 25mTAP AIR PORTUGAL

Deal found 8/13

$265

Wed 10/155:50 pmIAD - LGW

1 stop15h 10mTAP AIR PORTUGAL

Deal found 8/13

$267

Thu 9/2510:20 pmIAD - LGW

2 stops40h 20mMultiple Airlines

Deal found 8/13

$269

Wed 10/110:20 pmIAD - LGW

2 stops16h 20mMultiple Airlines

Deal found 8/14

$270

Fri 9/127:14 pmIAD - LGW

1 stop33h 46mMultiple Airlines

Deal found 8/13

$272

Sat 9/2010:35 pmIAD - LGW

1 stop30h 10mTAP AIR PORTUGAL

Deal found 8/13

$273

Sun 10/510:20 pmIAD - LGW

1 stop30h 25mTAP AIR PORTUGAL

Deal found 8/14

$275

Cheapflights Fare Finder

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

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 9/24

11:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Fri 10/3

3:40 pm-10:10 pm

1 stop11h 30m

$498

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 9/19

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 9/30

3:40 pm-7:20 pm

1 stop32h 40m

$500

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 9/3

8:30 pm-11:45 am

1 stop10h 15m

London Gatwick

Wed 10/22

3:40 pm-7:20 pm

1 stop32h 40m

$503

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 9/23

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 9/30

3:40 pm-7:20 pm

1 stop32h 40m

$503

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 10/19

10:20 pm-3:10 pm

1 stop11h 50m

London Gatwick

Sun 10/26

10:40 am-10:00 pm

1 stop15h 20m

$504

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 9/19

11:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Wed 9/24

3:35 pm-10:10 pm

1 stop11h 35m

$504

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 1/28

10:30 pm-3:05 pm

1 stop11h 35m

London Gatwick

Wed 2/4

10:40 am-9:00 pm

1 stop15h 20m

$505

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 9/2

11:15 pm-11:45 am

1 stop31h 30m

London Gatwick

Wed 10/22

3:40 pm-7:20 pm

1 stop32h 40m

$505

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 9/9

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Sat 9/20

3:40 pm-10:10 pm

1 stop11h 30m

$505

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 9/4

11:15 pm-11:45 am

1 stop31h 30m

London Gatwick

Wed 10/22

3:40 pm-7:20 pm

1 stop32h 40m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 24 results

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 round-trip 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of $550). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of $763). 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 to fly round-trip from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Reviews of airlines servicing Gatwick

Peruse reviews from past customers who have flown with Icelandair from Washington, D.C. Dulles Intl Airport to London Gatwick Airport 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.

Icelandair

7.0

Good

526 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

KEF - CPH

Some more info on Saga Premium. If you look on theri website they try to bill it as Premium, but zero information about the seating and when you actually get to the plane you realize that it is just an economy class seat.

Icelandair

7.0

Good

526 reviews

Icelandair

7.0

Good

526 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

KEF - CPH

Related info for your journey

What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to London Gatwick Airport is Icelandair. Our recent data shows that you can find tickets from as low as $481 on this airline. This flight start at 32% lower than the current average price 3 months from now.
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 vacation 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport (average of $550). Flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in June is currently the most expensive (average of $763). 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

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Hayes

Thornton Heath

Harrow

Canterbury

Dartford

Dover

Orpington

Watford

Gatwick

Borehamwood

Aylesbury

Chelmsford

Southend-on-Sea

Folkestone

Chichester

Arundel

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Milton Keynes

Sutton

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Top airline flying from Dulles Intl to Gatwick

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$481	Average$663	FlexibilityNo cancel fee	On-time76%

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$260+ Cheap flights from Dulles Intl (IAD) to Gatwick (LGW)

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Dulles Intl to GatwickExplore 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 August 14, 2025.

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 August 14, 2025.

Cheapflights Fare Finder

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.

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.

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?

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Reviews of airlines servicing Gatwick

Peruse reviews from past customers who have flown with Icelandair from Washington, D.C. Dulles Intl Airport to London Gatwick Airport 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.

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.

What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport round-trip?

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

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

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

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

Traveling to a place near London Gatwick Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Gatwick

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Dulles Intl to Gatwick

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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 August 14, 2025.