Fly from
Route
Depart
Return
Price
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Fri 6/2
07:30-18:26
2 stops18h 56m
Seattle/Tacoma Intl
Sat 14/2
07:00-09:10
2 stops18h 10m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 15/4
10:50-16:59
1 stop14h 09m
Seattle/Tacoma Intl
Mon 20/4
06:50-05:55
1 stop15h 05m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Mon 6/4
06:30-12:20
1 stop13h 50m
Seattle/Tacoma Intl
Wed 15/4
07:00-08:20
1 stop17h 20m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 9/4
06:30-12:20
1 stop13h 50m
Seattle/Tacoma Intl
Mon 13/4
23:05-20:40
1 stop13h 35m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 9/4
06:30-12:20
1 stop13h 50m
Seattle/Tacoma Intl
Sat 18/4
15:44-12:20
1 stop12h 36m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 22/1
14:50-10:22
2 stops27h 32m
Seattle/Tacoma Intl
Wed 4/2
15:10-12:50
1 stop13h 40m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Fri 27/2
12:10-18:20
1 stop14h 10m
Seattle/Tacoma Intl
Sun 8/3
21:05-15:35
1 stop11h 30m
LondonSeattle
LCY - SEA
LCYSEA
London City
Thu 15/1
09:15-22:43
2 stops21h 28m
Seattle/Tacoma Intl
Wed 28/1
10:58-12:55
2 stops41h 57m
LondonSeattle
LCY - SEA
LCYSEA
London City
Fri 16/1
09:20-21:12
2 stops19h 52m
Seattle/Tacoma Intl
Thu 29/1
12:35-17:05
2 stops20h 30m
LondonSeattle
LCY - SEA
LCYSEA
London City
Wed 4/2
09:20-21:12
2 stops19h 52m
Seattle/Tacoma Intl
Wed 18/2
10:55-12:55
2 stops18h 00m
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.
On average, a flight from London to Seattle takes 13 hours 34 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.
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.
The most flights from London to Seattle are scheduled on a Monday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).
The most popular airlines flying from London to Seattle are Virgin Atlantic, British Airways and Icelandair.
The cheapest airlines flying from London to Seattle are Icelandair, Air France and Finnair.
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.
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).
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
Boarding
Crew
Food
Comfort
Entertainment
Overall
Reviews
Anonymous,Dec 2025
YYC - AMS
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.
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-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.
Cheapflights makes it easy to find Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
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