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Cheap flights from Washington to London Gatwick Airport from £198

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 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Washington to Gatwick

Enter your travel dates to find the best prices.

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 7 November 2025.

Tue 18/1114:35SEA - LGW
1 stop12h 20mIcelandair
Sun 23/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 5/11£411
Thu 4/1214:35SEA - LGW
1 stop12h 20mIcelandair
Thu 11/1211:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 6/11£415
Tue 18/1114:35SEA - LGW
3 stops19h 15mMultiple Airlines
Tue 25/1108:50LGW - SEA
2 stops16h 10mMultiple Airlines
Deal found 6/11£417
Mon 1/1220:05SEA - LGW
1 stop13h 15mMultiple Airlines
Mon 8/1209:00LGW - SEA
1 stop17h 20mMultiple Airlines
Deal found 6/11£418
Tue 2/1208:10SEA - LGW
2 stops27h 20mMultiple Airlines
Mon 8/1217:55LGW - SEA
2 stops26h 15mMultiple Airlines
Deal found 5/11£419
Sun 9/1108:10SEA - LGW
2 stops25h 15mMultiple Airlines
Tue 25/1121:40LGW - SEA
3 stops29h 36mMultiple Airlines
Deal found 4/11£421
Tue 11/1114:35SEA - LGW
1 stop12h 20mIcelandair
Tue 25/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 6/11£423
Wed 26/1114:35SEA - LGW
1 stop12h 20mIcelandair
Fri 5/1211:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 4/11£424
Mon 10/1114:45PDX - LGW
1 stop12h 10mIcelandair
Wed 19/1111:55LGW - PDX
1 stop13h 05mIcelandair
Deal found 5/11£424
Thu 20/1114:35SEA - LGW
1 stop12h 20mIcelandair
Thu 4/1211:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 5/11£425
Mon 10/1114:35SEA - LGW
1 stop12h 20mIcelandair
Tue 25/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 6/11£426
Thu 20/1114:35SEA - LGW
1 stop12h 20mIcelandair
Wed 26/1111:55LGW - SEA
1 stop13h 05mIcelandair
Deal found 5/11£428

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 7 November 2025.

Round-trip from

£400

One-way from

£198

Popular in

June

Cheapest in

October

Average price

£528
Icelandair
  • Icelandair
  • 8/4-17/4
  • 2 total stops
  • 24h 45m total
  • Washington to London
Search Deals
19/1
  • 19/1
  • 3 total stops
  • 51h 38m total
  • Washington to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 7 November 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

Fri 6/2

14:35-10:55

1 stop12h 20m

London Gatwick

Fri 20/2

11:55-17:00

1 stop13h 05m

£411

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 27/4

15:45-11:45

1 stop12h 00m

London Gatwick

Sat 16/5

13:00-17:50

1 stop12h 50m

£427

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 29/12

14:35-10:55

1 stop12h 20m

London Gatwick

Sat 7/3

11:55-17:00

1 stop13h 05m

£441

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 3/12

14:35-10:55

1 stop12h 20m

London Gatwick

Thu 11/12

11:55-17:00

1 stop13h 05m

£452

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 27/4

15:45-11:45

1 stop12h 00m

London Gatwick

Sun 17/5

15:40-20:45

1 stop13h 05m

£456

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 2/12

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 8/12

11:55-17:00

1 stop13h 05m

£503

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 4/1

14:35-10:55

1 stop12h 20m

London Gatwick

Sat 10/1

11:55-17:00

1 stop13h 05m

£561

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 7/12

06:06-06:00

1 stop15h 54m

London Gatwick

Tue 9/12

13:00-23:19

1 stop18h 19m

£564

PortlandLondon

PDX - LGW

PDXLGW

Portland

Sat 6/12

14:45-09:25

3 stops34h 40m

London Gatwick

Sat 13/12

21:05-17:00

3 stops27h 55m

£564

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 20/3

10:55-06:00

1 stop36h 05m

London Gatwick

Sun 22/3

13:00-19:25

1 stop37h 25m

£565

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 53 results
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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 £370). Flying from State of Washington to London Gatwick Airport in June is currently the most expensive (average of £613). 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 12h 20m. 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?

    Most travelers choose Seattle/Tacoma Intl - London Gatwick, Portland - London Gatwick or Spokane - London Gatwick when deciding on the best route 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 £370). Flying from State of Washington to London Gatwick Airport in June is currently the most expensive (average of £613). 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
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Crawley
Brentford
Romford
Chichester
Ipswich
Bedford
Eastbourne

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Alternative routes for Washington to Gatwick

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

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