Find flights
When to book
Airlines
FAQs

Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £294

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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

£424

One-way from

£294

Popular in

July

Cheapest in

February

Average price

£467
Icelandair
  • Icelandair
  • 22/4-30/4
  • 2 total stops
  • 42h 55m total
  • London to Washington, D.C.
Search Deals
27/2
  • 27/2
  • 1 total stop
  • 32h 13m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£161 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles Intl
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 21 February 2025.

Fri 28/306:50LGW - IAD
2 stops19h 10mMultiple Airlines
Mon 31/322:20IAD - LGW
2 stops18h 35mMultiple Airlines
Deal found 20/2£428
Thu 6/311:55LGW - IAD
1 stop11h 30mIcelandair
Mon 17/320:40IAD - LGW
1 stop10h 15mIcelandair
Deal found 20/2£429
Wed 21/516:25LGW - IAD
1 stop27h 55mTAP AIR PORTUGAL
Tue 27/522:20IAD - LGW
1 stop30h 25mTAP AIR PORTUGAL
Deal found 21/2£507
Mon 17/318:45LGW - IAD
1 stop24h 45mSWISS
Sat 29/320:45IAD - LGW
1 stop16h 05mSWISS
Deal found 20/2£531
Thu 19/616:40LGW - IAD
1 stop31h 25mRoyal Air Maroc
Tue 15/721:05IAD - LGW
1 stop13h 35mRoyal Air Maroc
Deal found 20/2£557
Tue 11/306:00LGW - IAD
1 stop18h 30mTurkish Airlines
Fri 14/315:00IAD - LGW
1 stop20h 50mTurkish Airlines
Deal found 21/2£604

Find flights from Gatwick to Dulles Intl within your budget

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 21 February 2025.

Fly from

Gatwick

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 28/3

06:50-22:00

2 stops19h 10m

Washington, D.C. Dulles Intl

Mon 31/3

22:20-21:55

2 stops18h 35m

£428

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 6/3

11:55-18:25

1 stop11h 30m

Washington, D.C. Dulles Intl

Mon 17/3

20:40-10:55

1 stop10h 15m

£429

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 21/5

16:25-15:20

1 stop27h 55m

Washington, D.C. Dulles Intl

Tue 27/5

22:20-09:45

1 stop30h 25m

£507

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 17/3

18:45-15:30

1 stop24h 45m

Washington, D.C. Dulles Intl

Sat 29/3

20:45-16:50

1 stop16h 05m

£531

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 19/6

16:40-19:05

1 stop31h 25m

Washington, D.C. Dulles Intl

Tue 15/7

21:05-15:40

1 stop13h 35m

£557

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 11/3

06:00-20:30

1 stop18h 30m

Washington, D.C. Dulles Intl

Fri 14/3

15:00-15:50

1 stop20h 50m

£604

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 27/2

14:00-17:13

1 stop32h 13m

£294

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 5/3

11:40-22:24

1 stop15h 44m

£403

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 3/3

16:35-14:30

1 stop26h 55m

£463

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 15/3

15:45-19:40

1 stop31h 55m

£488

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 11 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.

Travel insights for flights from Gatwick to Dulles Intl

Get recent, data-driven insights about flights from Gatwick to Dulles Intl including ideal travel times, pricing trends, and 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 14 February 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 21 February 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.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 21 February 2025.
Get a feel of what it's like to fly with Air Transat, SWISS and Virgin Atlantic from London to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

Air Transat
7.8
Good
380 reviews
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

SWISS
7.5
Good
1,568 reviews
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

Virgin Atlantic
7.5
Good
654 reviews
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

Turkish Airlines
7.3
Good
3,832 reviews
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

TAP AIR PORTUGAL
7.1
Good
1,847 reviews
Air Transat
7.8
Good
380 reviews
Check prices

Comfort

7.4

Overall

7.8

Crew

8.5

Food

6.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

SFO - YYZ

Good flight! Smooth and on time. Loved the cookie snack. Will go with Porter again

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.

  • What are the cheapest airlines flying 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 £424 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and SWISS, starting at £509 and £531 round-trip. Icelandair is 29% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Air Transat, which is currently one of the cheapest options available, starting at £403. TAP AIR PORTUGAL flights start at £463 while deals on Royal Air Maroc start at £489 one-way.

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

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

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

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

  • 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.

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
Silver Spring
Arlington
Woodbridge
College Park
Laurel
Tysons

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.

Top 4 airlines flying from Gatwick to Dulles Intl

Discover the top 4 airlines 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£286Average£553FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£369Average£532FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£373Average£659FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£529Average£680FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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.