Historical on-time performance
Boise to Chicago
Flights on BOI–ORD arrive on time 77% of the time over the last 12 months.
based on 871 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- SkyWest AirlinesOn-time81%Medianon timep9025 minCancel1.9%Flights474
- United AirlinesOn-time78%Medianon timep9045 minCancel0.0%Flights214
- American AirlinesOn-time68%Medianon timep9075 minCancel0.0%Flights91
- Envoy AirOn-time66%Medianon timep9070 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline38%
- Weather9%
- Air traffic (NAS)25%
- Late aircraft28%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline11%
- Weather89%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 9 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 BOI → 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 · 765 flights
- Middays78% on time · p90 45 min · 1,404 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Saturdays84% on time · p90 20 min · 320 flights
- Thursdays83% on time · p90 25 min · 320 flights
- Tuesdays83% on time · p90 35 min · 314 flights
- Mondays81% on time · p90 45 min · 318 flights
- Sundays79% on time · p90 40 min · 317 flights
- Wednesdays76% on time · p90 40 min · 310 flights
- Fridays75% on time · p90 45 min · 319 flights
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