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Cheap flights from London Gatwick Airport to Washington from £320

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 2 February 2026.

Tue 22/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Sun 27/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 2/2£356
Sat 25/415:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Sat 2/519:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 2/2£366
Wed 9/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Thu 24/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/2£372
Sun 6/915:40
LGW
-
SEA
1 stop34h 15m
Icelandair
Sun 20/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/2£374
Fri 4/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Sun 27/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 31/1£374
Thu 19/211:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Thu 26/214:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/2£379
Wed 18/211:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Wed 25/214:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/2£392
Mon 2/311:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Tue 17/315:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 31/1£394
Wed 18/312:30
LGW
-
SEA
2 stops31h 24m
American Airlines
Wed 25/305:30
SEA
-
LGW
2 stops20h 30m
American Airlines
Deal found 1/2£399
Tue 24/211:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Tue 3/314:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/2£401
Tue 10/211:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Thu 26/214:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/2£403
Fri 6/311:55
LGW
-
PDX
1 stop13h 05m
Icelandair
Mon 9/315:45
PDX
-
LGW
1 stop12h 10m
Icelandair
Deal found 1/2£450

Find flight deals from Gatwick to Washington

Keep the following information in mind while searching for Gatwick to Washington flight deals. Data was last updated 2 February 2026.

Round-trip from

£366

One-way from

£320

Popular in

July

Cheapest in

February

Average price

£450
Icelandair
  • Icelandair
  • 25/4-2/5
  • 2 total stops
  • 24h 40m total
  • London to Washington
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 48h 02m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£58 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 February 2026
Search Deals

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 2 February 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

Tue 24/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/3

14:35-10:55

1 stop12h 20m

£402

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 4/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 11/5

15:40-11:45

1 stop12h 05m

£407

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 22/4

10:25-22:31

2 stops44h 06m

Seattle/Tacoma Intl

Sun 26/4

19:59-15:45

2 stops35h 46m

£414

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 13/4

10:25-17:38

1 stop15h 13m

Seattle/Tacoma Intl

Wed 6/5

18:40-16:00

1 stop13h 20m

£419

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 19/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Thu 26/2

14:35-10:55

1 stop12h 20m

£442

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 10/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Thu 28/5

15:40-14:40

1 stop15h 00m

£456

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 13/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Tue 26/5

15:40-14:40

1 stop15h 00m

£456

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 9/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Tue 26/5

15:40-14:40

1 stop15h 00m

£456

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 6/3

11:55-17:00

1 stop13h 05m

Portland

Tue 10/3

15:45-10:55

1 stop12h 10m

£479

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 13/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Fri 29/5

15:40-14:40

1 stop15h 00m

£480

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 55 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 £298). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £550). 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 2 February 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
606 reviews
Check prices

Boarding

7.2

Comfort

7.0

Crew

8.1

Entertainment

7.0

Food

6.2

Overall

7.1

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
7.1
Good
606 reviews
Icelandair
7.1
Good
606 reviews
Check prices

Boarding

7.2

Comfort

7.0

Crew

8.1

Entertainment

7.0

Food

6.2

Overall

7.1

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 and Delta 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 31h 01m. 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 £298). Flying from London Gatwick Airport to State of Washington in August is currently the most expensive (average of £550). 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 2 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£349Average£495FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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