At the moment, the best time to book a non-stop flight to Seattle is in February with an average price of £594. If you're looking to fly direct to Seattle in July, expect to pay the most, with an average price of £800. Keep in mind that different factors like airlines, departure airports, and times can affect the cost of your flight, so it's a good idea to compare these to find the best deal.
January
£488
February
£474
March
£505
April
£520
May
£544
June
£612
July
£639
August
£610
September
£548
October
£524
November
£478
December
£474
Fly from
Budget
£437 - £573
Route
Depart
Return
Price
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Wed 6/11
Nonstop9h 55m
Seattle/Tacoma Intl
Sat 16/11
Nonstop9h 25m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 5/11
Nonstop10h 00m
Seattle/Tacoma Intl
Mon 11/11
Nonstop9h 20m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Wed 18/9
Nonstop9h 45m
Seattle/Tacoma Intl
Wed 9/10
Nonstop9h 20m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Mon 28/10
Nonstop9h 55m
Seattle/Tacoma Intl
Tue 5/11
Nonstop9h 25m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 17/9
Nonstop9h 55m
Seattle/Tacoma Intl
Fri 27/9
Nonstop9h 35m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Wed 18/9
Nonstop10h 30m
Seattle/Tacoma Intl
Sat 28/9
Nonstop9h 35m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 28/5
Nonstop9h 45m
Seattle/Tacoma Intl
Tue 4/6
Nonstop9h 20m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 17/9
Nonstop10h 30m
Seattle/Tacoma Intl
Sat 28/9
Nonstop9h 20m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 18/6
Nonstop10h 20m
Seattle/Tacoma Intl
Tue 10/9
Nonstop9h 35m
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Food
Comfort
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
SEA Temperature | 5 - 19 °C |
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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).