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Cheap flights to Seattle

— SEA
5 May — 12 May1
1 adult

Flights to Seattle in 2025

Find the latest flights to Seattle 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 30 April 2025.

Return from

£457

One-way from

£407

Popular in

August

Cheapest in

January

Average price

£529

Good round-trip deal

£545 or less

Good one-way deal

£627 or less
Icelandair
  • Icelandair
  • 20/9-11/10
  • 2 total stops
  • 27h 55m total
  • London to Seattle
21/8
  • 21/8
  • 1 total stop
  • 20h 05m total
  • London to Seattle
Highest demand for flights based on searches. 16% potential increase in price (£81 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 April 2025
Price to beat on a round-trip flight from London to Seattle/Tacoma Intl.
Price to beat on a one-way flight from London to Seattle/Tacoma Intl.

Best time to book a flight to Seattle

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

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

Use this chart to determine the optimal time to book a return flight from London to Seattle. Price data was last updated on 25 April 2025.

The best time to book flights to Seattle is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

How long is the flight to Seattle?

On average, a flight from London to Seattle takes 13 hours 50 minutes. Flights to Seattle 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 Seattle?

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

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

Weekly flight availability to Seattle

The most flights from London to Seattle are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 on average).

What are the cheapest airlines that fly to Seattle?

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

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 30 April 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair to Seattle. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

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 Seattle

Getting around Seattle

The Metro Transit system of buses, including electric and hybrid buses, is useful and tourist-friendly, though drivers do not carry change. Express routes are offered by some buses. Other options include the streetcar and the monorail, connecting with major attractions. The Washington State Ferries are a tourist attraction in their own right.

Seattle is generally safe, though common sense should be applied at all times and it can be best to avoid parks at night.

Getting downtown:

Flights to Seattle will take you to Seattle-Tacoma International Airport (SEA), also known as Sea-Tac, it is the city’s major airport. It is 10 miles (16 km) from the city centre. There are several options for getting into the city. The Link Light Rail is a convenient choice, taking just over 30 minutes to reach the centre. Shuttle buses are useful for those with a lot of luggage. There are also taxis and rental cars.

Seattle airport overview

Seattle-Tacoma International Airport, also affectionately known as Sea-Tac Airport, is located in the southern King County of Washington, 19km (12 miles) south of Seattle. Serving more than 31.5 million passengers in 2010, it is the United States’ 18th busiest airport.

Sea-Tac Airport has a Main (central) Terminal and ticketing arena surrounded by concourses A-D, as well as a two satellite terminals called the North and South Satellites. An automatic people-mover transports passengers between the satellite terminals and the Main Terminal. Running alongside the ticketing concourse is the airport garage, which houses five parking areas and a ground transportation centre. All gates may be accessed once past security.

With an extensive selection of art on display throughout the airport, in addition to a host of shops, restaurants, bars, bistros and fast-food outlets, Sea-Tac is both attractive and inviting. Moreover, its combination of efficient facilities and helpful staff make pesky tasks such as checking-in a breeze.

Flights to Seattle-Tacoma International Airport comes from a number of cities worldwide, including Toronto, Paris, Atlanta, Los Angeles, Chicago, Seoul, London, Frankfurt, Amsterdam, Tokyo, New York, Honolulu and Beijing.

  • What airport do you fly into for flights to Seattle?

    For a flight to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Booking flights from London to Seattle/Tacoma Intl should be relatively easy as there are 19 daily flights from 13 different airlines.

  • Can I find cheaper flights to Seattle 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 Seattle on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Seattle?

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

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

    Seattle/Tacoma Intl is currently the cheapest airport to fly to in Seattle. One-way flights to Seattle/Tacoma Intl typically cost £58, while return flights cost around £52.

  • How much is a return flight to Seattle?

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

  • Where does the fastest flight to Seattle depart from?

    For those looking to save time traveling to Seattle, 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

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