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Cheap flights from London Gatwick Airport to Washington from £331

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
22 Dec — 29 Dec1
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 22 November 2025.

Round-trip from

£484

One-way from

£331

Popular in

July

Cheapest in

February

Average price

£547
Icelandair
  • Icelandair
  • 16/3-4/4
  • 2 total stops
  • 24h 45m total
  • London to Washington
Search Deals
31/1
  • 31/1
  • 2 total stops
  • 56h 52m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 22 November 2025.

Tue 2/1211:55LGW - SEA
1 stop13h 05mIcelandair
Fri 5/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 21/11£491
Wed 24/1211:55LGW - SEA
1 stop13h 05mIcelandair
Tue 6/114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 20/11£494
Tue 2/1211:55LGW - SEA
1 stop13h 05mIcelandair
Mon 8/1219:54SEA - LGW
2 stops31h 01mIcelandair
Deal found 21/11£587
Sun 23/1111:55LGW - PDX
1 stop13h 05mIcelandair
Thu 27/1114:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 20/11£617
Tue 2/1211:55LGW - SEA
1 stop13h 05mIcelandair
Sat 6/1219:54SEA - LGW
2 stops31h 01mIcelandair
Deal found 21/11£623
Wed 3/1211:55LGW - PDX
1 stop13h 05mIcelandair
Tue 9/1210:40PDX - LGW
2 stops16h 15mIcelandair
Deal found 21/11£630
Mon 24/1111:55LGW - PDX
1 stop13h 05mIcelandair
Thu 27/1114:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 20/11£636
Sun 23/1111:55LGW - SEA
1 stop13h 05mIcelandair
Sun 30/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 22/11£638
Thu 27/1111:55LGW - SEA
1 stop13h 05mIcelandair
Thu 4/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 22/11£641
Tue 2/1211:55LGW - SEA
1 stop13h 05mIcelandair
Thu 4/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 21/11£653
Tue 2/1208:15LGW - SEA
3 stops33h 16mMultiple Airlines
Wed 10/1214:35SEA - LGW
2 stops23h 50mMultiple Airlines
Deal found 21/11£655
Sun 23/1111:55LGW - PDX
1 stop13h 05mIcelandair
Sat 29/1114:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 20/11£655

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 22 November 2025.
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

Tue 10/3

13:00-20:00

1 stop38h 00m

Seattle/Tacoma Intl

Sun 22/3

22:55-06:00

1 stop24h 05m

£517

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 19/1

14:00-10:33

1 stop28h 33m

Seattle/Tacoma Intl

Sun 25/1

15:29-10:00

1 stop34h 31m

£524

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 16/3

11:55-18:00

1 stop13h 05m

Seattle/Tacoma Intl

Sun 5/4

19:00-14:40

1 stop11h 40m

£544

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 28/1

11:55-08:58

2 stops29h 03m

Seattle/Tacoma Intl

Sun 1/2

14:35-10:55

1 stop12h 20m

£582

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 20/1

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/2

11:24-10:55

2 stops15h 31m

£583

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 10/3

11:55-21:37

2 stops16h 42m

Spokane

Tue 17/3

12:00-10:55

2 stops15h 55m

£585

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 23/1

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Fri 30/1

11:00-10:55

2 stops15h 55m

£587

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 20/1

13:00-10:26

1 stop29h 26m

Seattle/Tacoma Intl

Thu 5/2

11:06-06:00

1 stop34h 54m

£601

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 24/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/3

08:30-10:55

2 stops18h 25m

£617

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 14/1

09:50-20:27

2 stops42h 37m

Portland

Mon 26/1

07:05-10:00

1 stop18h 55m

£637

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 59 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 £312). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £575). 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 WA?

Find hourly flight availability from Gatwick to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 30% on flights from London Gatwick Airport to State of Washington by exploring options for tickets in the afternoon.

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 22 November 2025.
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
7.0
Good
581 reviews
Check prices

Boarding

7.1

Crew

8.0

Food

6.2

Entertainment

7.0

Comfort

6.9

Overall

7.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
Icelandair
7.0
Good
581 reviews
Icelandair
7.0
Good
581 reviews
Check prices

Boarding

7.1

Crew

8.0

Food

6.2

Entertainment

7.0

Comfort

6.9

Overall

7.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.

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 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 . The distance between London Gatwick Airport and State of Washington is about 4807 mi.

  • 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 £312). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £575). 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 22 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£352Average£516FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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