£309+ Cheap flights to Washington

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
18 Aug — 25 Aug1
1 adult

Flights to Washington in 2025

Find the latest flights to Washington in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 13 August 2025.

Return from

£476

One-way from

£309

Popular in

August

Cheapest in

January

Average price

£699

Good round-trip deal

£543 or less

Good one-way deal

£637 or less
United Airlines
  • United Airlines
  • 1/9-26/11
  • 3 total stops
  • 34h 19m total
  • London to Seattle
22/10
  • 22/10
  • 3 total stops
  • 31h 28m total
  • London to Washington
Highest demand for flights based on searches. 12% potential increase in price (£60 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Average for return flights in August 2025
Price to beat on a round-trip flight from London to Washington.
Price to beat on a one-way flight from London to Washington.

Find flights to Washington

Browse one-way and return flights deals to Washington on Cheapflights. Flight deals are based on user searches and were last updated on 13 August 2025
Explore Washington

Find flight deals to Washington

Cheapest flights to Washington
Explore the most affordable flight options available to Washington. Find the lowest fares based on data from user searches, with prices last updated on 13 August 2025.

Tue 2/1209:30LHR - SEA
2 stops21h 45mUnited Airlines
Sat 6/1209:25SEA - LHR
2 stops20h 05mUnited Airlines
Deal found 13/8£476
Sat 27/906:30LHR - SEA
2 stops15h 46mMultiple Airlines
Sat 4/1005:30SEA - LHR
2 stops17h 00mMultiple Airlines
Deal found 11/8£477
Fri 5/918:40LGW - SEA
2 stops31h 56mSWISS
Sat 13/916:20SEA - LGW
1 stop17h 30mSWISS
Deal found 11/8£477
Mon 15/920:05LHR - SEA
2 stops34h 15mSWISS
Sat 27/910:50SEA - LHR
2 stops61h 05mSWISS
Deal found 12/8£477
Tue 26/813:00LGW - SEA
1 stop12h 50mIcelandair
Wed 3/915:45SEA - LGW
1 stop12h 00mIcelandair
Deal found 12/8£478
Mon 15/906:50LHR - SEA
2 stops21h 52mMultiple Airlines
Mon 29/908:00SEA - LHR
1 stop14h 55mMultiple Airlines
Deal found 12/8£478
Tue 16/917:25LHR - SEA
Nonstop10h 25mVirgin Atlantic
Tue 23/920:25SEA - LHR
Nonstop9h 50mVirgin Atlantic
Deal found 12/8£479
Sat 30/806:40LHR - SEA
1 stop15h 10mScandinavian Airlines
Mon 8/916:00SEA - LHR
1 stop17h 40mScandinavian Airlines
Deal found 11/8£480
Sat 13/906:30LHR - SEA
2 stops15h 46mMultiple Airlines
Thu 18/912:00SEA - LHR
1 stop15h 50mMultiple Airlines
Deal found 12/8£481
Mon 1/906:30LHR - SEA
1 stop17h 35mVirgin Atlantic
Mon 15/917:35SEA - LHR
Nonstop9h 45mVirgin Atlantic
Deal found 12/8£482
Tue 2/1212:15LHR - SEA
1 stop12h 45mIcelandair
Fri 13/214:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 11/8£483
Wed 5/1110:35LHR - SEA
2 stops20h 43mFinnair
Wed 12/1100:59SEA - LHR
1 stop21h 56mFinnair
Deal found 13/8£483

Cheapflights Fare Finder

 
Locate flights to Washington that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 13 August 2025.
Use the filters below to find and compare flights to Washington that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 27/9

06:30-14:16

2 stops15h 46m

Seattle/Tacoma Intl

Sat 4/10

05:30-06:30

2 stops17h 00m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/12

10:30-00:59

2 stops22h 29m

Seattle/Tacoma Intl

Tue 9/12

13:40-07:55

1 stop34h 15m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 12/9

08:40-18:36

2 stops17h 56m

Seattle/Tacoma Intl

Sun 14/9

05:30-06:30

2 stops17h 00m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 1/9

09:30-20:54

2 stops19h 24m

Seattle/Tacoma Intl

Wed 26/11

08:00-06:40

1 stop14h 40m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 1/9

09:30-20:54

2 stops19h 24m

Seattle/Tacoma Intl

Wed 5/11

07:00-05:55

1 stop14h 55m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/12

09:30-23:15

2 stops21h 45m

Seattle/Tacoma Intl

Sat 6/12

09:25-13:30

2 stops20h 05m

£476

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 13/9

06:30-14:16

2 stops15h 46m

Seattle/Tacoma Intl

Sat 27/9

07:15-09:35

1 stop18h 20m

£477

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 29/9

06:30-11:55

1 stop13h 25m

Seattle/Tacoma Intl

Wed 15/10

08:42-12:20

2 stops19h 38m

£477

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/11

06:30-12:10

1 stop13h 40m

Seattle/Tacoma Intl

Mon 17/11

06:20-11:15

2 stops20h 55m

£477

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 5/9

18:40-18:36

2 stops31h 56m

Seattle/Tacoma Intl

Sat 13/9

16:20-17:50

1 stop17h 30m

£477

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 60 results
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Best time to book a flight to Washington

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

How long is the flight to Washington?

On average, a flight from London to Washington takes 16 hours 58 minutes. Flights to Washington from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Washington?

Use this chart to determine the cheapest time to fly return from London to Washington. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Washington should consider flying on Wednesday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Friday afternoons, when prices are usually at their highest.

Weekly flight availability to Washington

The most flights from London to Washington are scheduled on a Tuesday (21 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (10 on average).

What are the cheapest airlines that fly to Washington?

The cheapest airlines flying from London to Washington are Aer Lingus, Icelandair and Air France.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Washington when rainfall is around 18.0 mm.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular places to fly to in Washington?

Destination popularity is based on the amount of flight searches to Washington in the last few years. This data was updated on 13 August 2025.
The most popular places in Washington to fly to are Seattle and Spokane.

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 13 August 2025.
Read through reviews of airlines serving the United States, such as KLM, Air France, andVirgin Atlantic. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

FAQs about flying to Washington

Washington climate

Washington has two main climates: west and east of the Cascades. The west is typically mild and wet, the east cool and dry. Seattle temperatures generally range from the very low single digits in January to about 20 degrees (Celsius) in July; Spokane from about minus six in January to about 20 in July.Most rain falls October through March. The western side of the Olympic Peninsula receives up to 406cm (160 inches) of rain annually, and the western slopes of the Cascades over 500cm (200 inches) of snow. Eastern Washington has only about 15cm (six inches) of precipitation, with more closer to the Rocky Mountains.

Getting around Washington

With several regional airports, flying within Washington is easy and discount fares are available. There is train service north and south of Seattle and bus service to Spokane and beyond. Washington has the most extensive ferry service in the country, and it includes transport to the San Juan Islands, Bainbridge Island, Whidbey Island, Vashon Island, and Kitsap Peninsula. A car or RV is a great way to see the state and the only way to get to some of the more remote locations. Make sure to fill the gas tank first — Washington is a large state, and gas stations are few and far between in some areas.

Seattle is fun to explore on foot and is well served by the Metro system. The Downtown Ride Free Area has free bus service from 6am to 7pm. To travel across the sound, choose from ferries, speedboats, water taxis, and jet catamarans. Seattle is a difficult city for driving, with bad traffic congestion, one-way streets, and scarce and expensive parking.

Hiking is the best mode of transport in Olympic National Park. A great state for hiking, Washington’s popular trails include the Pacific Crest Trail, Hoh River Trail, and Wonderland Trail.

Airports

The main airport for flights to Washington State is Seattle-Tacoma International Airport (SEA)

What is good to know if travelling to Washington?

  • The small town of Starbuck in Columbia County is not the home of Starbucks, the global coffee company. That’s Pike Place, a downtown Seattle market. Other “liquid” attractions are microbreweries Red Hook Brewery in Woodinville (there are tours) and Yakima Brewing and Malting Co.
  • Leavenworth is a Bavarian village in the foothills of the Cascade Mountains. In the 1960s, the town decided to go Bavarian to stave off economic meltdown. Stores were remodelled and festivals launched including the Autumn Leaf Festival, the Christmas Lighting and the Maifest. Enjoy the Germanic fare such as wiener schnitzel and sauerbraten or pick up a cuckoo clock.
  • Tatoosh Island, about a half mile off Cape Flattery (the most north-westerly point in the continental US) on the Olympic Peninsula is part of the Makah Indian Reservation. Nobody lives on the island, but has a very nice lighthouse, which looks over the entrance to the Strait of Juan de Fuca and lots and lots of birds.
  • Olympic National Park has glacier-capped mountains, almost 96km (60 miles) of wild Pacific coast and old-growth rain forest. The star of the park is Mount Olympus which stands at 2,427 metres (7,962 feet). There are three national parks in Washington State: Olympic National Park, Mount Rainier National ParkNorth Cascades National Park.
  • The four main San Juan Islands – served by Washington State Ferries – are Lopez, Orcas, San Juan and Shaw, although hundreds of islands and islets make up the archipelago. San Juan boasts the Whale Museum and there are the ruins of the British and American forts in San Juan Island National Historic Park.
  • Can I find cheaper flights to Washington if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Washington on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Washington?

    Based on reviews from Cheapflights users, Aer Lingus is rated the highest out of the airlines that fly to Washington.

  • What is the cheapest airport to fly to in Washington?

    Seattle/Tacoma Intl is currently the cheapest airport to fly to in Washington. One-way flights to Seattle/Tacoma Intl typically cost £48, while return flights cost around £71.

  • How much is a return flight to Washington?

    A return flight to Washington will typically cost around £108, however they can be found for as little as £95.

  • Where does the fastest flight to Washington depart from?

    For those looking to save time traveling to Washington, London offers the quickest one-way flight (9 hours 50 minutes).

  • Which airport is closest to Seattle Waterfront?

    f being close to Seattle Waterfront is important to you, you’ll want to land at Seattle/Tacoma Intl Airport.

  • Does Seattle/Tacoma Intl have car hire?

    Yes. Those touching down at Seattle/Tacoma Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Seattle/Tacoma Intl?

    Yes. Seattle/Tacoma Intl has hotels nearby for those requiring accommodations. Seatac Inn is the closest property to Seattle/Tacoma Intl (0.0 mi away from Seattle/Tacoma Intl).

See more FAQs

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