Cheap flights from Washington to London Gatwick Airport from £188

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Washington to Gatwick

Keep the following information in mind while searching for Washington to Gatwick flight deals. Data was last updated 12 September 2025.

Round-trip from

£375

One-way from

£188

Popular in

June

Cheapest in

October

Average price

£514
Icelandair
  • Icelandair
  • 21/10-26/10
  • 2 total stops
  • 49h 15m total
  • Washington to London
21/10
  • 21/10
  • 1 total stop
  • 37h 03m total
  • Washington to London
Highest demand for flights based on searches. 15% potential increase in price (£76 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Washington to Gatwick

Cheapest flights from Washington to Gatwick
Explore the most affordable flight options available from Washington to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Tue 21/1015:45SEA - LGW
1 stop14h 55mIcelandair
Sun 26/1014:40LGW - SEA
1 stop34h 20mIcelandair
Deal found 11/9£375
Tue 30/919:00SEA - LGW
1 stop11h 40mIcelandair
Thu 30/1011:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 11/9£377
Fri 14/1114:35SEA - LGW
1 stop12h 20mIcelandair
Sun 23/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 11/9£378
Sun 16/1114:35SEA - LGW
1 stop12h 20mIcelandair
Thu 27/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 12/9£382
Thu 13/1114:35SEA - LGW
1 stop12h 20mIcelandair
Sun 23/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 11/9£383
Thu 9/1019:00SEA - LGW
1 stop11h 40mIcelandair
Tue 14/1015:40LGW - SEA
1 stop34h 10mIcelandair
Deal found 11/9£384
Tue 14/1019:35SEA - LGW
1 stop16h 40mMultiple Airlines
Wed 22/1009:45LGW - SEA
1 stop16h 05mMultiple Airlines
Deal found 10/9£385
Sun 28/919:00SEA - LGW
1 stop11h 40mIcelandair
Fri 31/1011:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 11/9£388
Tue 23/919:00SEA - LGW
1 stop11h 40mIcelandair
Sat 27/915:40LGW - SEA
1 stop13h 00mIcelandair
Deal found 11/9£393
Mon 27/1014:40SEA - LGW
2 stops20h 10mSWISS
Thu 6/1118:40LGW - SEA
2 stops34h 11mSWISS
Deal found 10/9£394
Tue 11/1115:37SEA - LGW
2 stops18h 13mSWISS
Wed 19/1118:40LGW - SEA
2 stops36h 35mSWISS
Deal found 11/9£395
Sun 5/1019:00SEA - LGW
1 stop11h 40mIcelandair
Sat 18/1015:40LGW - SEA
1 stop13h 00mIcelandair
Deal found 11/9£396

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington 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 12 September 2025.
Use the filters below to find and compare flights from Washington to London Gatwick Airport that are best for you.

Fly from

Washington

Fly to

Gatwick

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 14/10

15:45-14:40

1 stop14h 55m

London Gatwick

Thu 23/10

15:40-20:40

1 stop13h 00m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 16/11

14:35-10:55

1 stop12h 20m

London Gatwick

Wed 26/11

11:55-17:00

1 stop13h 05m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 11/11

14:35-10:55

1 stop12h 20m

London Gatwick

Tue 18/11

11:55-17:00

1 stop13h 05m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 15/10

19:00-14:40

1 stop11h 40m

London Gatwick

Thu 23/10

15:40-20:40

1 stop13h 00m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 13/10

19:00-14:35

1 stop11h 35m

London Gatwick

Thu 23/10

15:40-20:40

1 stop13h 00m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 12/10

19:00-14:40

1 stop11h 40m

London Gatwick

Thu 23/10

15:40-20:40

1 stop13h 00m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 19/11

14:35-10:55

1 stop12h 20m

London Gatwick

Wed 26/11

11:55-17:00

1 stop13h 05m

£382

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 13/11

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 24/11

11:55-17:00

1 stop13h 05m

£383

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 9/11

14:35-10:55

1 stop12h 20m

London Gatwick

Tue 18/11

11:55-17:00

1 stop13h 05m

£383

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 15/11

14:35-10:55

1 stop12h 20m

London Gatwick

Wed 19/11

11:55-17:00

1 stop13h 05m

£383

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 53 results
1
2
3
...
6

Best time to book a flight from Washington to Gatwick

Have a flexible travel schedule? Discover the best time to fly to Gatwick from Washington 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 to London Gatwick Airport

What is the cheapest month to book a flight from State of Washington to London Gatwick Airport?

Currently, April is the cheapest month in which you can book a flight from State of Washington to London Gatwick Airport (average of £102). Flying from State of Washington to London Gatwick Airport in July is currently the most expensive (average of £142). 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 State of Washington to London Gatwick Airport?

Related info for your journey

Find useful and relevant information for your journey from Washington 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 State of Washington to London Gatwick Airport?

    Departing from State of Washington to London Gatwick Airport will take you 14h 55m. The distance between State of Washington and London Gatwick Airport is about 4807 mi.

  • What are the most popular routes from State of Washington to London Gatwick Airport?

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

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

  • How can I find direct flights from Washington to Gatwick?

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to London Gatwick Airport?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to London Gatwick Airport (average of £102). Flying from State of Washington to London Gatwick Airport in July is currently the most expensive (average of £142). 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
Hounslow
Gatwick
Slough
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Winchester
Chichester
Ipswich
Dartford
Eastbourne
Guildford
Bishop's Stortford

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 Washington to Gatwick

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

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 Washington to Gatwick?

Cheapflights helps you search for flights from Washington to Gatwick via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Washington to Gatwick?

Cheapflights helps you find that perfect flight to Gatwick from Washington 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 Washington to Gatwick with no change fees?

Yes, we can. To see specific flights from Washington to Gatwick with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Washington to Gatwick flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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.