£389+ Cheap flights to Washington

— SEA
13 Nov — 20 Nov1
1 adult
1 adult, Economy, 0 bags

Flights to Washington in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Washington

Tue 15/1212:15 -
1 stop12h 45m
Fri 25/1214:35 -
1 stop12h 15m
Deal found 11/10£413
Wed 4/1112:20 -
Nonstop10h 30m
Tue 17/1116:50 -
Nonstop9h 50m
Deal found 14/10£414
Thu 22/1011:40 -
Nonstop10h 20m
Wed 4/1116:50 -
Nonstop9h 50m
Deal found 14/10£415
Mon 23/1114:45 -
Nonstop10h 15m
Sun 6/1218:45 -
Nonstop9h 35m
Deal found 12/10£415
Thu 22/1009:55 -
1 stop14h 40m
Wed 4/1106:00 -
1 stop17h 50m
Deal found 14/10£417
Fri 13/1117:50 -
1 stop25h 57m
Fri 20/1114:35 -
1 stop13h 30m
Deal found 14/10£418
Tue 15/1212:15 -
1 stop12h 45m
Thu 7/114:35 -
1 stop12h 15m
Deal found 11/10£418
Mon 9/1120:35 -
1 stop28h 25m
Mon 23/1114:35 -
1 stop12h 15m
Deal found 9/10£419
Wed 21/1011:40 -
Nonstop10h 20m
Fri 13/1116:50 -
Nonstop9h 50m
Deal found 14/10£421
Wed 21/1006:30 -
2 stops18h 15m
Fri 13/1116:50 -
Nonstop9h 50m
Deal found 14/10£421
Tue 24/1114:45 -
Nonstop10h 15m
Tue 1/1218:45 -
Nonstop9h 35m
Deal found 10/10£422
Sat 5/1206:30 -
2 stops18h 14m
Fri 11/1213:25 -
1 stop12h 35m
Deal found 14/10£423

Find flights to Washington

Explore Washington

Find flight deals to Washington

Return from

£413

One-way from

£389

Popular in

August

Cheapest in

February

Average price

£545

Good round-trip deal

£430 or less

Good one-way deal

£400 or less
Icelandair
  • Icelandair
  • 15/12-25/12
  • 2 total stops
  • 25h 00m total
  • London to Seattle
Alaska Airlines
  • Alaska Airlines
  • 5/12-31/12
  • Nonstop
  • 10h 15m total
  • London to Washington
Highest demand for flights based on searches. 7% potential increase in price (£43 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Average for return flights in October 2026
Price to beat on a round-trip flight from London to Washington.
Price to beat on a one-way flight from London to Washington.

Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Washington that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Tue 16/3

09:30-00:33

2 stops22h 03m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£390
Fastest return journey

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 9/11

14:45-17:00

Nonstop10h 15m

Seattle/Tacoma Intl

Mon 23/11

18:45-12:20

Nonstop9h 35m

£431

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 12/12

14:45-17:00

Nonstop10h 15m

Seattle/Tacoma Intl

Tue 19/1

18:40-12:20

Nonstop9h 40m

£431

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 8/3

11:05-22:25

3 stops43h 20m

Spokane

Wed 31/12

00:00-09:00

Nonstop0h 00m

£455

LondonPasco

LHR London Heathrow - PSC Pasco Tri Cities

LHRPSC

London Heathrow

Tue 17/11

09:55-13:12

3 stops35h 17m

Pasco Tri Cities

Wed 31/12

00:00-09:00

Nonstop0h 00m

£508

LondonPasco

LHR London Heathrow - PSC Pasco Tri Cities

LHRPSC

London Heathrow

Thu 21/1

14:45-14:32

1 stop31h 47m

Pasco Tri Cities

Mon 25/1

06:08-12:20

1 stop22h 12m

£519

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sun 22/11

06:00-23:07

2 stops25h 07m

Seattle/Tacoma Intl

Sat 5/12

13:14-17:50

2 stops20h 36m

£527

LondonPullman

LHR London Heathrow - PUW Pullman Moscow Regional

LHRPUW

London Heathrow

Mon 9/11

14:45-23:56

1 stop17h 11m

Pullman Moscow Regional

Mon 16/11

17:32-12:20

1 stop34h 48m

£529

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Wed 11/11

06:35-13:00

1 stop14h 25m

Seattle/Tacoma Intl

Wed 18/11

07:00-09:10

2 stops18h 10m

£530

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 12/12

16:40-13:00

1 stop28h 20m

Seattle/Tacoma Intl

Sat 9/1

08:08-09:10

2 stops17h 02m

£537

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 33 resultsSorted by cheapest first
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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

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 12 hours 38 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.

Weekly flight availability to Washington

The most flights from London to Washington are scheduled on a Monday (24 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (16 on average).

What are the cheapest airlines that fly to Washington?

The cheapest airlines flying from London to Washington are Icelandair, Lufthansa and United Airlines.

Rainfall in Washington 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

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).

When is the best time to book a flight to Washington?

The price you pay for your flight to Washington may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

The most popular places in Washington to fly to are Seattle and Spokane.

Reviews of airlines servicing Washington

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

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Comfort

7.8

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

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, Alaska Airlines is rated the highest out of the airlines that fly to Washington.

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

    Spokane is currently the cheapest airport to fly to in Washington. One-way flights to Spokane typically cost £112, while return flights cost around £105.

  • How much is a return flight to Washington?

    A return flight to Washington will typically cost around £664, however they can be found for as little as £105.

  • 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. Serene 3-bedroom house perfect for relaxing stays in SeaTac, Burien, Seattle is the closest property to Seattle/Tacoma Intl (0.0 mi away from Seattle/Tacoma Intl).

See more FAQs

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