Historical on-time performance
Chicago to Chattanooga
Flights on ORD–CHA 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-time75%Medianon timep9060 minCancel3.7%Flights107
- SkyWest AirlinesOn-time64%Medianon timep9075 minCancel6.6%Flights396
- Republic AirwaysOn-time62%Medianon timep9085 minCancel5.1%Flights197
Why flights run late
Delay causes
- Airline42%
- Weather12%
- Air traffic (NAS)18%
- Late aircraft28%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather75%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 40 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 ORD → CHA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 66% to 78% on time.
- Mornings78% on time · p90 40 min · 656 flights
- Overnights74% on time · p90 50 min · 452 flights
- Afternoons73% on time · p90 50 min · 776 flights
- Middays71% on time · p90 55 min · 329 flights
- Evenings66% on time · p90 75 min · 600 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 76% on time.
- Saturdays76% on time · p90 40 min · 336 flights
- Wednesdays76% on time · p90 50 min · 431 flights
- Tuesdays75% on time · p90 55 min · 408 flights
- Thursdays73% on time · p90 55 min · 415 flights
- Mondays73% on time · p90 50 min · 414 flights
- Fridays71% on time · p90 65 min · 418 flights
- Sundays63% on time · p90 55 min · 391 flights
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