Historical on-time performance
Chicago to Bismarck
716 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–BIS arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 123 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirOn-time80%Medianon timep9030 minCancel0.0%Flights123
Why flights run late
Delay causes
- Airline27%
- Weather16%
- Air traffic (NAS)21%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → BIS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 85% on time.
- Middays85% on time · p90 20 min · 119 flights · limited
- Mornings74% on time · p90 45 min · 91 flights · limited
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