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£328+ 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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
26 Mar — 2 Apr1
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 21 March 2025.

Return from

£446

One-way from

£328

Popular in

August

Cheapest in

January

Average price

£521

Good round-trip deal

£561 or less

Good one-way deal

£598 or less
Icelandair
  • Icelandair
  • 21/4-27/4
  • 2 total stops
  • 45h 45m total
  • London to Seattle
29/4
  • 29/4
  • 3 total stops
  • 40h 09m total
  • London to Washington
Highest demand for flights based on searches. 15% potential increase in price (£85 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Average for return flights in March 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 21 March 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 21 March 2025.

Mon 21/421:25LHR - SEA
1 stop28h 25mIcelandair
Sun 27/419:00SEA - LHR
1 stop17h 20mIcelandair
Deal found 21/3£446
Tue 22/415:40LGW - SEA
1 stop34h 10mIcelandair
Fri 2/519:00SEA - LGW
1 stop11h 40mIcelandair
Deal found 20/3£447
Tue 9/906:30LHR - SEA
1 stop13h 25mLufthansa
Tue 23/912:45SEA - LHR
1 stop13h 55mLufthansa
Deal found 21/3£449
Thu 1/508:40LHR - SEA
2 stops18h 57mAir Canada
Mon 5/511:40SEA - LHR
1 stop16h 10mAir Canada
Deal found 21/3£452
Fri 5/1215:10LHR - SEA
2 stops29h 10mUnited Airlines
Fri 12/1205:07SEA - LHR
1 stop20h 33mUnited Airlines
Deal found 21/3£459
Thu 8/510:20LHR - SEA
1 stop13h 40mAmerican Airlines
Wed 14/517:40SEA - LHR
1 stop13h 30mAmerican Airlines
Deal found 21/3£460
Tue 6/508:45LHR - SEA
2 stops18h 52mMultiple Airlines
Tue 13/507:20SEA - LHR
1 stop18h 40mMultiple Airlines
Deal found 21/3£463
Tue 22/418:35LGW - SEA
2 stops34h 40mSWISS
Tue 6/512:45SEA - LGW
2 stops45h 10mSWISS
Deal found 21/3£465
Mon 8/910:30LHR - SEA
1 stop14h 29mBritish Airways
Mon 22/920:20SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 21/3£465
Tue 22/420:05LHR - SEA
2 stops33h 10mSWISS
Tue 6/512:45SEA - LHR
2 stops25h 00mSWISS
Deal found 21/3£468
Wed 14/509:55LHR - SEA
1 stop13h 55mKLM
Tue 20/520:20SEA - LHR
Nonstop9h 55mKLM
Deal found 21/3£470
Mon 5/519:45LHR - SEA
1 stop23h 30mVirgin Atlantic
Mon 12/517:35SEA - LHR
Nonstop9h 45mVirgin Atlantic
Deal found 21/3£478

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 21 March 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

Mon 21/4

21:25-17:50

1 stop28h 25m

Seattle/Tacoma Intl

Sun 27/4

19:00-20:20

1 stop17h 20m

£446

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 22/4

15:40-17:50

1 stop34h 10m

Seattle/Tacoma Intl

Fri 2/5

19:00-14:40

1 stop11h 40m

£447

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 9/9

06:30-11:55

1 stop13h 25m

Seattle/Tacoma Intl

Tue 23/9

12:45-10:40

1 stop13h 55m

£449

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 1/5

08:40-19:37

2 stops18h 57m

Seattle/Tacoma Intl

Mon 5/5

11:40-11:50

1 stop16h 10m

£452

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 8/9

08:40-14:55

1 stop14h 15m

Seattle/Tacoma Intl

Mon 22/9

10:55-08:20

1 stop13h 25m

£459

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 8/5

10:20-16:00

1 stop13h 40m

Seattle/Tacoma Intl

Wed 14/5

17:40-15:10

1 stop13h 30m

£460

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 22/4

18:35-21:15

2 stops34h 40m

Seattle/Tacoma Intl

Tue 6/5

12:45-17:55

2 stops45h 10m

£465

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 8/9

10:30-16:59

1 stop14h 29m

Seattle/Tacoma Intl

Mon 22/9

20:20-13:40

Nonstop9h 20m

£465

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 10/9

09:00-16:59

1 stop15h 59m

Seattle/Tacoma Intl

Tue 23/9

15:51-12:20

1 stop12h 29m

£466

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 22/4

18:40-21:15

2 stops34h 35m

Seattle/Tacoma Intl

Mon 5/5

12:45-17:50

2 stops45h 05m

£468

Flights are sorted by cheapest return flights first.

Deals found on 20/3

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 17 hours 40 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 30 June 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 Sunday afternoons, when prices are usually at their highest.

Weekly flight availability to Washington

The most flights from London to Washington are scheduled on a Friday (21 on average). You will have fewer flight options on Saturday, 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 Icelandair, Air France and Lufthansa.

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 21 March 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 21 March 2025.
Get a feel of what it's like to fly with Delta, Air New Zealand and KLM to Washington by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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, Icelandair 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 £45, while return flights cost around £53.

  • How much is a return flight to Washington?

    A return flight to Washington will typically cost around £545, however they can be found for as little as £69.

  • 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 45 minutes).

  • 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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