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Cheap flights from London Gatwick Airport to Washington from £318

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Washington

Keep the following information in mind while searching for Gatwick to Washington flight deals. Data was last updated 9 January 2026.

Round-trip from

£393

One-way from

£318

Popular in

July

Cheapest in

January

Average price

£473
SWISS
  • SWISS
  • 15/4-22/4
  • 4 total stops
  • 58h 49m total
  • London to Washington
Search Deals
6/3
  • 6/3
  • 2 total stops
  • 52h 09m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Gatwick to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Washington
Explore the most affordable flight options available from Gatwick to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 January 2026.

Wed 15/409:25LGW - SEA
2 stops21h 12mSWISS
Wed 22/410:48SEA - LGW
2 stops37h 37mSWISS
Deal found 7/1£393
Mon 23/211:55LGW - SEA
1 stop13h 05mIcelandair
Mon 2/314:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 8/1£400
Sun 22/218:25LGW - SEA
2 stops34h 36mMultiple Airlines
Sun 1/308:10SEA - LGW
2 stops25h 40mMultiple Airlines
Deal found 8/1£402
Tue 21/409:25LGW - SEA
2 stops21h 12mSWISS
Wed 6/510:52SEA - LGW
2 stops37h 33mSWISS
Deal found 7/1£408
Fri 10/415:40LGW - SEA
1 stop13h 00mIcelandair
Mon 20/415:40SEA - LGW
1 stop15h 00mIcelandair
Deal found 7/1£411
Wed 17/609:25LGW - SEA
2 stops17h 05mSWISS
Sat 5/916:30SEA - LGW
1 stop17h 20mSWISS
Deal found 7/1£414
Fri 17/409:25LGW - SEA
2 stops21h 14mSWISS
Sat 2/510:52SEA - LGW
2 stops37h 33mSWISS
Deal found 8/1£417
Mon 20/409:15LGW - SEA
2 stops21h 22mSWISS
Wed 6/510:52SEA - LGW
2 stops37h 33mSWISS
Deal found 7/1£419
Thu 9/415:40LGW - SEA
1 stop34h 15mIcelandair
Mon 13/419:00SEA - LGW
1 stop11h 40mIcelandair
Deal found 8/1£420
Sat 6/609:25LGW - SEA
1 stop13h 05mSWISS
Sat 20/616:30SEA - LGW
1 stop31h 50mSWISS
Deal found 7/1£422
Mon 4/515:40LGW - SEA
1 stop13h 00mIcelandair
Sat 9/515:40SEA - LGW
1 stop12h 05mIcelandair
Deal found 8/1£425
Mon 23/211:55LGW - SEA
1 stop13h 05mIcelandair
Tue 3/314:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 7/1£426

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick to Washington 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 9 January 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington that are best for you.

Fly from

Gatwick

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 23/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Mon 2/3

14:35-10:55

1 stop12h 20m

£400

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 17/4

09:25-22:39

2 stops21h 14m

Seattle/Tacoma Intl

Sat 2/5

10:52-08:25

2 stops37h 33m

£417

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 10/2

18:40-21:12

2 stops34h 32m

Seattle/Tacoma Intl

Fri 20/2

12:32-17:20

2 stops20h 48m

£503

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 17/4

09:25-22:39

2 stops21h 14m

Seattle/Tacoma Intl

Mon 4/5

10:52-08:20

2 stops37h 28m

£510

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 19/4

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 4/5

19:00-14:40

1 stop11h 40m

£515

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 19/4

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sat 2/5

15:40-11:45

1 stop12h 05m

£515

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 9/2

13:00-12:38

2 stops31h 38m

Portland

Mon 23/2

10:39-06:00

1 stop35h 21m

£517

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 22/1

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Mon 26/1

19:55-10:55

2 stops31h 00m

£539

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 28/1

11:55-20:39

2 stops16h 44m

Seattle/Tacoma Intl

Sun 1/2

14:35-10:55

1 stop12h 20m

£551

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 28/1

11:55-20:39

2 stops16h 44m

Seattle/Tacoma Intl

Tue 10/2

14:35-10:55

1 stop12h 20m

£552

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 46 results
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Best time to book a flight from Gatwick to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Washington

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

Currently, March is the cheapest month in which you can book a flight from London Gatwick Airport to State of Washington (average of £302). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £559). 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.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated 9 January 2026.
Read through reviews of airlines operating flights from London Gatwick Airport to Washington, such as Icelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.1
Good
593 reviews
Check prices

Food

6.2

Overall

7.1

Boarding

7.2

Comfort

6.9

Entertainment

7.0

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
Icelandair
7.1
Good
593 reviews
Icelandair
7.1
Good
593 reviews
Check prices

Food

6.2

Overall

7.1

Boarding

7.2

Comfort

6.9

Entertainment

7.0

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.

Related info for your journey

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

    Airlines like Icelandair and SWISS fly from London Gatwick Airport to State of Washington in about 13h 05m. The time it takes to get you to your destination can typically vary by up to 8h 09m. The distance between London Gatwick Airport and State of Washington is about 4807 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular route from London Gatwick Airport to State of Washington is London Gatwick - Seattle/Tacoma Intl. You may also consider London Gatwick - Portland or London Gatwick - Spokane.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from London Gatwick Airport to State of Washington (average of £302). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £559). 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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Alternative routes for Gatwick to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Gatwick to Washington

Discover the top airline that operate flights from Gatwick to Washington. 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£351Average£501FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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