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£421+ Cheap flights to Seattle

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to Seattle
Explore the most affordable flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 31 October 2025.

Tue 25/1111:55LGW - SEA
1 stop13h 05mIcelandair
Tue 2/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 28/10£452
Mon 15/1220:35LHR - SEA
1 stop28h 25mIcelandair
Thu 15/114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 28/10£452
Wed 12/1112:15LHR - SEA
1 stop12h 45mIcelandair
Wed 19/1114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 28/10£455
Tue 11/1120:35LHR - SEA
1 stop28h 25mIcelandair
Tue 18/1114:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 28/10£455
Tue 2/1220:35LHR - SEA
1 stop28h 25mIcelandair
Tue 9/1214:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 30/10£456
Wed 26/1112:15LHR - SEA
1 stop12h 45mIcelandair
Wed 3/1214:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 29/10£458
Wed 12/1111:55LGW - SEA
1 stop13h 05mIcelandair
Tue 18/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 30/10£464
Wed 12/1112:15LHR - SEA
1 stop12h 45mIcelandair
Tue 18/1114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 30/10£467
Tue 11/1120:35LHR - SEA
1 stop28h 25mIcelandair
Mon 17/1114:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 30/10£468
Tue 11/1120:35LHR - SEA
1 stop28h 25mIcelandair
Wed 19/1114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 28/10£469
Thu 27/1111:55LGW - SEA
1 stop13h 05mIcelandair
Thu 4/1214:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 28/10£476
Thu 13/1111:55LGW - SEA
1 stop13h 05mIcelandair
Wed 26/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 28/10£480

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 31 October 2025.

Return from

£452

One-way from

£423

Popular in

July

Cheapest in

January

Average price

£551

Good round-trip deal

£553 or less

Good one-way deal

£517 or less
Icelandair
  • Icelandair
  • 25/11-2/12
  • 2 total stops
  • 25h 25m total
  • London to Seattle
Search Deals
11/2
  • 11/2
  • 1 total stop
  • 18h 36m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for return flights in October 2025
Search Deals
Price to beat on a round-trip flight from London to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from London to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Locate flights to Seattle 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 31 October 2025.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 4/12

06:00-17:00

1 stop19h 00m

Seattle/Tacoma Intl

Mon 8/12

14:35-14:00

1 stop15h 25m

£481

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 12/11

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Wed 19/11

14:35-10:55

1 stop12h 20m

£482

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 15/12

20:35-17:00

1 stop28h 25m

Seattle/Tacoma Intl

Thu 8/1

14:35-10:50

1 stop12h 15m

£486

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 17/11

10:15-18:20

1 stop16h 05m

Seattle/Tacoma Intl

Sun 30/11

20:05-16:35

1 stop12h 30m

£489

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 21/11

05:50-18:20

1 stop20h 30m

Seattle/Tacoma Intl

Sun 30/11

20:05-16:45

1 stop12h 40m

£496

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 25/2

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Sat 7/3

16:45-10:30

Nonstop9h 45m

£498

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 21/11

06:30-18:20

1 stop19h 50m

Seattle/Tacoma Intl

Sun 30/11

20:05-16:35

1 stop12h 30m

£498

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 17/11

08:50-18:20

1 stop17h 30m

Seattle/Tacoma Intl

Sun 30/11

20:05-16:45

1 stop12h 40m

£501

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 9/2

14:55-16:55

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 24/2

18:50-12:20

Nonstop9h 30m

£505

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 6/2

14:55-16:55

Nonstop10h 00m

Seattle/Tacoma Intl

Fri 20/2

18:50-12:20

Nonstop9h 30m

£505

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 60 results
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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 24 October 2025.

The best time to book flights to Seattle is 90 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 15 hours 31 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.

What are the most popular airlines that fly to Seattle?

The most popular airlines flying from London to Seattle are Virgin Atlantic, British Airways and Icelandair.

Virgin Atlantic
Virgin Atlantic
From £450
British Airways
British Airways
From £431
Icelandair
Icelandair
From £322
KLM
KLM
From £411

What are the cheapest airlines that fly to Seattle?

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

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 31 October 2025.
Check out reviews from past customers who have flown KLM, Virgin Atlantic, andAir France to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
671 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Air France
7.4
Good
1,482 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.1
Good
562 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,487 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 5 daily flights from 14 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, Icelandair 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 £22, while return flights cost around £106.

  • How much is a return flight to Seattle?

    A return flight to Seattle will typically cost around £802, however they can be found for as little as £106.

  • 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
SeaTac

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