£409+ 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 21/6. Fares are subject to change and may not be available on all flights or dates of travel.
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 12 May 2025.
Find flight deals to Seattle
Cheapest flights to SeattleExplore the most affordable flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 12 May 2025.
Explore the most affordable flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 12 May 2025.
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 12 May 2025.
Use the filters below to find and compare flights to Seattle that are best for you.
Fly from
Route
Depart
Return
Price
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 21/8
14:10-22:16
1 stop16h 06m
Seattle/Tacoma Intl
Sat 30/8
07:05-08:20
2 stops17h 15m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Sun 8/6
15:40-20:40
1 stop13h 00m
Seattle/Tacoma Intl
Sun 15/6
23:30-11:45
1 stop28h 15m
LondonSeattle
LCY - SEA
LCYSEA
London City
Thu 11/9
08:40-16:05
1 stop15h 25m
Seattle/Tacoma Intl
Sun 21/9
17:40-16:40
1 stop15h 00m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Fri 31/10
16:10-19:20
Nonstop10h 10m
Seattle/Tacoma Intl
Sat 22/11
17:20-11:00
Nonstop9h 40m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Fri 6/6
18:40-14:50
1 stop28h 10m
Seattle/Tacoma Intl
Sat 14/6
16:20-17:50
1 stop17h 30m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 25/6
13:25-15:45
Nonstop10h 20m
Seattle/Tacoma Intl
Mon 1/9
20:25-14:15
Nonstop9h 50m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sat 4/10
09:30-19:31
1 stop18h 01m
Seattle/Tacoma Intl
Mon 20/10
12:43-12:20
1 stop15h 37m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Fri 6/6
06:30-11:40
1 stop13h 10m
Seattle/Tacoma Intl
Tue 5/8
20:25-14:15
Nonstop9h 50m
LondonSeattle
LCY - SEA
LCYSEA
London City
Thu 11/9
08:40-23:34
2 stops22h 54m
Seattle/Tacoma Intl
Sun 21/9
17:40-17:20
1 stop15h 40m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Tue 10/6
09:25-11:10
Nonstop9h 45m
Seattle/Tacoma Intl
Mon 23/6
17:40-15:10
1 stop13h 30m
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.
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 9 May 2025.
The best time to book flights to Seattle is 43 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 18 hours 44 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 Sunday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).
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.
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 12 May 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
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Overall
Comfort
Entertainment
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
Travelling to a place near Seattle?
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How does Cheapflights help users find flights to Seattle?
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Yes! Cheapflights helps users easily find flights to Seattle with no change fees.
Can Cheapflights notify me if prices for flights to Seattle become cheaper?
Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Seattle today and book when you’re ready!