Finnair
Oneworld
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United States
Seattle–Tacoma International Airport
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Finland
Helsinki Airport
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Scan through all non-stop flights from Seattle / Tacoma to Helsinki. The full flight schedule below gives an overview of all non-stop flights from SEA to HEL, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
Warm Continental destinations such as Helsinki enjoy summer temperatures that fluctuate between 20°C and 28°C (68°F to 82°F), with some heatwaves leading to even hotter days. Winters are mostly cold and snowy, with average temperatures ranging from -5°C to 0°C (23°F to 32°F). Travelers can enjoy the vibrant autumn scenery, ski during the winter season, or enjoy the comfortable to warm summer months.
If you're planning a trip to Helsinki, the best time to visit is from late spring through the end of summer, when the weather is pleasantly warm from May to August. Winters can be quite cold, with frost occurring almost every month from November to March and regular snowfall. This makes the mountainous regions perfect for winter sports, offering great opportunities for a winter getaway as well!
Currently, there is only one airline operating non-stop flights from Seattle / Tacoma SEA to Helsinki HEL, which is Finnair. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their SEA HEL flight schedule.
Flights from SEA to HEL are operated once a week. All flights depart at 17:40.
You can fly in Economy, Premium Economy and Business Class. First Class is not available on this route (at least not as a non-stop flight).
The fastest direct flight from Seattle / Tacoma to Helsinki takes 9 hours and 30 minutes. The flight distance between Seattle / Tacoma and Helsinki is 4,765 miles (or 7,669 km).
There is 1 airport in Helsinki: Helsinki Airport (HEL).
There is 1 flight per week flying from Seattle / Tacoma to Helsinki (as of April 2026).
9 hours and 30 minutes is the average flight time from Seattle / Tacoma to Helsinki.
The distance from Seattle / Tacoma to Helsinki is 4,765 miles (7,669 kilometers).
Finnair is the only airline flying nonstop from Seattle / Tacoma to Helsinki.
Oneworld is currently the only alliance flying nonstop from Seattle / Tacoma to Helsinki.
You can fly non-stop in Economy, Premium Economy and Business Class.
Aircraft types that fly from Seattle / Tacoma to Helsinki:
The earliest flight departs at 17:40 from Seattle / Tacoma and arrives at 13:10 at Helsinki.
The latest flight departs at 17:40 from Seattle / Tacoma and arrives at 13:10 at Helsinki.
4,765 miles (7,669 km) · 9h 30m
17:40
13:10
Finnair
Oneworld
AY 34
Finnair
Airbus A330-300
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F
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