Historical on-time performance
Chattanooga to Chicago
Flights on CHA–ORD arrive on time 65% of the time over the last 12 months.
based on 700 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-time72%Medianon timep9065 minCancel2.8%Flights107
- SkyWest AirlinesOn-time64%Medianon timep9090 minCancel6.3%Flights397
- Republic AirwaysOn-time63%Median5 minp9065 minCancel3.6%Flights196
Why flights run late
Delay causes
- Airline29%
- Weather7%
- Air traffic (NAS)28%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather80%
- Air traffic (NAS)20%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 35 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 CHA → 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 — 82% on time.
- Mornings82% on time · p90 30 min · 1,028 flights
- Middays77% on time · p90 65 min · 777 flights
- Evenings60% on time · p90 70 min · 955 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 77% on time.
- Saturdays77% on time · p90 45 min · 341 flights
- Wednesdays75% on time · p90 65 min · 429 flights
- Tuesdays75% on time · p90 55 min · 408 flights
- Thursdays73% on time · p90 50 min · 415 flights
- Fridays72% on time · p90 60 min · 418 flights
- Sundays71% on time · p90 70 min · 385 flights
- Mondays68% on time · p90 55 min · 417 flights
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