LGW - IAD

£368 Find Cheap Flights from London Gatwick Airport to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Gatwick to Washington, D.C. departing on 29/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£394
Overall average: £433
TAP AIR PORTUGAL
Fri 27/2Tue 3/3
LGW - IAD • 1 stop
Cheapest one-way flight
£368
Multiple Airlines
Fri 29/5
LGW - IAD • 2 stops
Top airlines
TAP AIR PORTUGAL
Cheapest • from £394 (return)
Icelandair
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 34% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Gatwick to Washington, D.C. (LGW-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Gatwick to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Gatwick to Washington, D.C.

Fri, 27 Feb - Tue, 3 Mar
TAP AIR PORTUGAL Logo
10:40 - 21:00
LGW
-
IAD
15h 20m
1 stop
TAP AIR PORTUGAL Logo
17:30 - 09:50
IAD
-
LGW
11h 20m
1 stop
£394TAP AIR PORTUGAL
Fri, 22 May - Sun, 31 May
Icelandair Logo
15:40 - 22:15
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
23:20 - 14:40
IAD
-
LGW
10h 20m
1 stop
£394Icelandair
Wed, 18 Feb - Sat, 28 Feb
Icelandair Logo
11:55 - 18:30
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
19:40 - 10:55
IAD
-
LGW
10h 15m
1 stop
£395Icelandair
Wed, 29 Apr - Sun, 10 May
Icelandair Logo
15:40 - 19:20
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
20:30 - 14:40
IAD
-
LGW
13h 10m
1 stop
£398Icelandair
Thu, 26 Feb - Thu, 5 Mar
Multiple Airlines Logo
14:00 - 07:20
LGW
-
IAD
22h 20m
1 stop
Multiple Airlines Logo
10:10 - 10:00
IAD
-
LGW
18h 50m
1 stop
£408Multiple Airlines
Fri, 22 May - Sat, 30 May
Icelandair Logo
15:40 - 22:15
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
20:30 - 11:45
IAD
-
LGW
10h 15m
1 stop
£410Icelandair
Thu, 5 Mar - Sun, 22 Mar
Multiple Airlines Logo
14:00 - 07:24
LGW
-
IAD
22h 24m
1 stop
Multiple Airlines Logo
08:15 - 06:00
IAD
-
LGW
41h 45m
2 stops
£412Multiple Airlines
Fri, 20 Feb - Mon, 2 Mar
Icelandair Logo
11:55 - 18:30
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
19:40 - 10:55
IAD
-
LGW
10h 15m
1 stop
£419Icelandair
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
08:50 - 18:30
LGW
-
IAD
14h 40m
2 stops
Multiple Airlines Logo
19:40 - 17:20
IAD
-
LGW
16h 40m
2 stops
£421Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
SWISS Logo
18:40 - 14:35
LGW
-
IAD
24h 55m
2 stops
SWISS Logo
17:45 - 17:50
IAD
-
LGW
19h 05m
1 stop
£425SWISS
Booking Insights

KAYAK's insights & trends for Gatwick to Washington, D.C. flights

Get data-powered insights and trends into flights from Gatwick to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is April, where tickets cost £345 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £744 and £702 respectively.

Good to know - Cheap tickets from London Gatwick Airport to Washington, D.C.

Low seasonApril
Cheapest flight£368
Best time to beat the crowds (35% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from London Gatwick Airport to Washington, D.C.

When to book flights from Gatwick to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Gatwick to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Gatwick Airport to Washington, D.C. flights

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

    In the last 3 days, the lowest price for a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport was £368 for a one-way ticket and £394 for a return.

  • Which aircraft models fly most regularly from London Gatwick Airport to Washington, D.C.?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from London Gatwick Airport to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Gatwick Airport to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Gatwick Airport to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from London Gatwick Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Gatwick Airport to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to London Gatwick Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Gatwick Airport to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from London Gatwick Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Gatwick to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from London to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Gatwick to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
IcelandairOverall score based on 606 reviews
7.0Comfort
8.1Crew
6.2Food
7.2Boarding
7.0Entertainment
Airline reviews

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

8.0 ExcellentTina, Jan 2026
KEF - BOS
Read more Icelandair reviews

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

The Experience Was Torture Spend a few extra dollars and avoid Icelandair at all costs. There is absolutely no refreshments, no food, no drinks. Only water, coffee, tea are free and at only half a tiny cup. Entertainment is limited selection of films, shows and mostly outdated. The seats are smaller than usual, with no cushion, no pillows, no blankets. First time in my life have I witness an airline asking for donations in spare change for a charity. With all the money Icelandair saves by starving the passenger, they can afford to give this charity on their own.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Everything you need to know for your flight from Gatwick to Washington, D.C.

Information on your arrival and departure airports