Direct (nonstop) flights from Seattle to Helsinki
1 airline flys nonstop from Seattle Tacoma International (SEA) to Helsinki Airport (HEL). It's 4,783 miles (7,697 km), about 9h 30m in the air. Operated by Finnair.
Finnair
Route data last updated: May 29, 2026
Airlines with non-stop flights
Alternative Routes
Other ways to fly from Seattle to Helsinki with one stop · direct emits 731 kg CO₂ per passenger
Looking for the return flight?
HEL → SEA: Flights from Helsinki to SeattleOther direct flights from Seattle
Direct flights from Helsinki (HEL)
Frequently Asked Questions
How long is the direct flight from Seattle to Helsinki?
A nonstop flight from Seattle (SEA) to Helsinki (HEL) takes approximately 9 hours and 30 minutes. The distance is 4,783 miles (7,697 km).
Which airlines fly nonstop from Seattle to Helsinki?
Just Finnair.
Is there a nonstop flight from Seattle to Helsinki?
Yes. 1 airline: Finnair.
How far is Seattle from Helsinki?
The flight distance from Seattle to Helsinki is 4,783 miles (7,697 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Rome.
What is the time difference between Seattle and Helsinki?
Helsinki is 10 hours ahead of Seattle. (America/Los_Angeles vs Europe/Helsinki.)
Will I experience jet lag flying from Seattle to Helsinki?
Probably — 10-hour time difference means significant jet lag. Expect about 1 day of adjustment per hour of shift. Flying eastward is generally harder to adjust to.
What type of aircraft flies from Seattle to Helsinki?
At 9h 30m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from USA to Finland?
Depends on your passport. Check with the Finland embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Helsinki?
Roughly 731 kg CO2 per passenger one-way. That's about the same as driving 3,655 km.
Is the return flight from Helsinki to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Helsinki?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. For long-haul, booking 2-3 months out tends to help. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.