Historical on-time performance
Chicago to Kalispell
1,352 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–FCA arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 392 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time89%Medianon timep9015 minCancel0.0%Flights122
- American AirlinesOn-time64%Medianon timep9065 minCancel1.0%Flights208
- SkyWest AirlinesOn-time60%Medianon timep90120 minCancel6.5%Flights62
Why flights run late
Delay causes
- Airline54%
- Weather2%
- Air traffic (NAS)14%
- Late aircraft29%
- Security1%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → FCA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 80% on time.
- Mornings80% on time · p90 35 min · 852 flights
- Middays64% on time · p90 65 min · 197 flights · limited
- Evenings46% on time · p90 145 min · 54 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 84% on time.
- Tuesdays84% on time · p90 25 min · 143 flights · limited
- Thursdays79% on time · p90 35 min · 155 flights · limited
- Saturdays75% on time · p90 45 min · 209 flights
- Fridays74% on time · p90 40 min · 150 flights · limited
- Sundays73% on time · p90 50 min · 187 flights · limited
- Mondays73% on time · p90 45 min · 154 flights · limited
- Wednesdays72% on time · p90 70 min · 142 flights · limited
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