Historical on-time performance
Missoula to Seattle
Flights on MSO–SEA arrive on time 80% of the time over the last 12 months.
based on 512 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- SkyWest AirlinesOn-time100%Medianon timep90on timeCancel0.0%Flights30
- Alaska AirlinesOn-time78%Medianon timep9025 minCancel1.2%Flights482
Why flights run late
Delay causes
- Airline27%
- Weather7%
- Air traffic (NAS)22%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather50%
- Air traffic (NAS)50%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MSO → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 196 flights · limited
- Middays77% on time · p90 55 min · 106 flights · limited
- Afternoons73% on time · p90 40 min · 696 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 82% on time.
- Saturdays82% on time · p90 20 min · 136 flights · limited
- Wednesdays81% on time · p90 40 min · 148 flights · limited
- Tuesdays78% on time · p90 25 min · 145 flights · limited
- Thursdays74% on time · p90 55 min · 149 flights · limited
- Mondays73% on time · p90 25 min · 148 flights · limited
- Fridays73% on time · p90 45 min · 150 flights · limited
- Sundays72% on time · p90 40 min · 148 flights · limited
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