Historical on-time performance
Missoula to Chicago
Flights on MSO–ORD arrive on time 71% of the time over the last 12 months.
based on 434 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.
- Envoy AirOn-time71%Medianon timep9060 minCancel0.3%Flights342
- United AirlinesOn-time68%Medianon timep9050 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline23%
- Weather7%
- Air traffic (NAS)35%
- Late aircraft34%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 1 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 → ORD
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 — 85% on time.
- Mornings85% on time · p90 20 min · 115 flights · limited
- Middays71% on time · p90 50 min · 883 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 81% on time.
- Thursdays81% on time · p90 30 min · 144 flights · limited
- Wednesdays74% on time · p90 40 min · 137 flights · limited
- Tuesdays74% on time · p90 60 min · 138 flights · limited
- Saturdays73% on time · p90 45 min · 146 flights · limited
- Mondays72% on time · p90 40 min · 143 flights · limited
- Fridays70% on time · p90 50 min · 145 flights · limited
- Sundays66% on time · p90 85 min · 145 flights · limited
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