SEA → HELSeattle to Helsinki

live

Direct flights from Seattle (SEA) to Helsinki (HEL): 2 nonstop departures observed each week across 1 airline. The median arrival is 27 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 7,673 km, an estimated 10 hours 20 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Helsinki. Updated 14 September 2026 at 11:23 UTC.

SEA Seattle busy · +17
HEL Helsinki smooth · +0
7,673 km · ~10h 20m est.
departs 17:402x weekly
Running clean · 1 airline · 2x weekly · nonstop
89 / 100

route health from live SEA and HEL delay boards

Median arrival delay is +27 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+27 minacross the last 2 operated legs
Flight time~10h 20mestimated from route distance
Weekly departures2x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Finnair

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
FinnairAY

Flights AY34 17:40 Mo Fr

History

operated legs · board outcomes
09-11AY34arrived+27
09-07AY34arrived+25

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +17 min busy ⛅ mostly cloudy · S 7 kt Full SEA delay board →
HELHelsinki +0 min smooth 🌤 few clouds · NNW 7 kt Full HEL delay board →

Weather lens

Current conditions put the pressure at HEL: 30% odds of a 15+ minute delay and around +2 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Helsinki route actually runs

Pro Flight Search records official board updates for nonstop SEA to HEL flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Helsinki (HEL) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-HEL
How we measure this →

SEA to HEL questions

Is SEA–HEL running on time right now?

Smooth skies ahead. The departure side at SEA is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from SEA to HEL?

Great-circle distance is 7,673 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 572–688 min gate-to-gate on this route.

How often does SEA–HEL fly?

Finnair runs the route with about 2 flights a week (mon, fri). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at SEA and arrival-side delay at HEL, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.