Alaska AirlinesAS29% on time
Flights AS2132 17:09 daily
live
Direct flights from Helena (HLN) to Seattle (SEA): 7 nonstop departures observed each week across 1 airline. 29% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 25 minutes late. 1 of the 7 tracked flights was cancelled. The nonstop covers 788 km, an estimated 1 hour 31 minutes in the air. Measured by Pro Flight Search from live flight boards at Helena and Seattle. Updated 17 August 2026 at 09:23 UTC.
HLN
Helena
tracking
SEA
Seattle
busy · +20
788 km · ~1h 31m est.
Runs rough · 1 airline · 7x weekly · nonstop
29% on time
of the last 7 operated HLN → SEA flights arrived within 15 minutes
Median arrival delay is +25 min. 1 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Search live fares for this route →Median arrival+25 minacross the last 7 operated legs
Flight time~1h 31mestimated from route distance
Weekly departures7x1 direct airline on the leg
Current nonstop fares
HLN → SEA · one way · economy · 1 adult
TodayChecking…Direct airline fares
TomorrowChecking…Direct airline fares
In one weekChecking…Direct airline fares
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska Airlines
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 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Helena to Seattle route actually runs
Pro Flight Search tracks every published board update for nonstop HLN to SEA flights: 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. Fares link straight to the operating airline with no markups.
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 — Helena (HLN) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/HLN-SEA
HLN to SEA questions
Is HLN–SEA running on time right now?
Mostly on schedule. The arrival side at SEA is the weaker end, route health score 74/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from HLN to SEA?
Great-circle distance is 788 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 86–98 min gate-to-gate on this route.
How often does HLN–SEA fly?
Alaska Airlines runs the route with about 7 flights a week (daily). 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 HLN and arrival-side delay at SEA, 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.
.