Alaska AirlinesAS
Flights AS722 07:00 daily · AS2219 14:40 daily · AS660 17:00 daily
live
Direct flights from Missoula (MSO) to Seattle (SEA): 7 nonstop departures observed each week across 1 airline. The nonstop covers 624 km, an estimated 1 hour 18 minutes in the air. Measured by Pro Flight Search from live flight boards at Missoula and Seattle. Updated 13 September 2026 at 20:23 UTC.
MSO
Missoula
tracking
SEA
Seattle
smooth · +0
624 km · ~1h 18m est.
Running clean · 1 airline · 7x weekly · nonstop
100 / 100
route health from live MSO and SEA delay boards
Flight time~1h 18mestimated from route distance
Weekly departures7x1 direct airline on the leg
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 daysAirports right now
live boardsnext sweep in 120s
How the Missoula to Seattle route actually runs
Pro Flight Search records official board updates for nonstop MSO to SEA 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 — Missoula (MSO) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/MSO-SEA
MSO to SEA questions
Is MSO–SEA running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from MSO to SEA?
Great-circle distance is 624 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 74–83 min gate-to-gate on this route.
How often does MSO–SEA fly?
Alaska Airlines runs the route with about 21 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 MSO 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.
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