Alaska AirlinesAS
Flights AS3121 09:50 Mo Tu We Th Fr Su · AS3332 09:52 daily · AS660 12:07 daily · AS557 18:53 Mo Tu We Th Fr Su
live
Direct flights from Seattle (SEA) to Missoula (MSO): 33 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 Seattle and Missoula. Updated 6 November 2026 at 14:34 UTC.
Today, SEA → MSO
Fri 6 Nov · local times- 09:50 AS3121Alaska On scheduleGate C16C ·
- 12:57 AS660Alaska On scheduleGate C18 ·
- 18:53 AS557Alaska On scheduleGate N11 ·
Checked SEA board 06:34
SEA
Seattle
busy · +16
MSO
Missoula
tracking
624 km · ~1h 18m est.
Running clean · 1 airline · 33x weekly · nonstop
78 / 100
route health from live SEA and MSO delay boards
Flight time~1h 18mestimated from route distance
Weekly departures33x1 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 Seattle to Missoula route actually runs
Pro Flight Search records official board updates for nonstop SEA to MSO 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 Missoula (MSO) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-MSO
SEA to MSO questions
Is SEA–MSO running on time right now?
Mostly on schedule. The departure side at SEA is the weaker end, route health score 78/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on SEA–MSO?
Operators schedule morning departures around 09:50 and evening departures around 18:53 from SEA. Earlier flights typically land before destination-airport delays accumulate later in the day; check the MSO delay card to confirm conditions when you'd arrive.
How long is the flight from SEA to MSO?
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 SEA–MSO fly?
Alaska Airlines runs the route with about 33 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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