Historical on-time performance
Bozeman to Chicago
1,198 miData through Dec 2025Source: US DOT · BTS
Flights on BZN–MDW arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 92 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time85%Medianon timep9020 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline12%
- Weather0%
- Air traffic (NAS)38%
- Late aircraft50%
- 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 BZN → MDW
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 — 86% on time.
- Middays86% on time · p90 20 min · 128 flights · limited
- Afternoons71% on time · p90 30 min · 66 flights · limited
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