PDX (Portland) to MSO (Missoula) flights arrive on time 91% of the time. The most reliable airline on this route is SkyWest Airlines at 88%. The average delay is 21 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.PDX → MSO
PDX (Portland) to MSO (Missoula)
PDX → MSO on-time performance by month
26
JanFebMarAprMayJunJulAugSepOctNovDec
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This route is usually on time. About 91% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Accurate?
Good to know
Departing from PDX
83% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. PDX has long runway queues.
TSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at MSO
82% on timeWhen flights into MSO are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at MSO: TSA is ~14 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what SkyWest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of PDX? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
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Data last updated August 2026. Source: Bureau of Transportation Statistics.