Historical on-time performance
Austin to Chicago
978 miData through May 2026Source: US DOT · BTS
Flights on AUS–ORD arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 2,852 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time74%Medianon timep9050 minCancel1.0%Flights1,433
- Envoy AirOn-time71%Medianon timep9035 minCancel2.9%Flights35
- Southwest AirlinesOn-time71%Medianon timep9035 minCancel0.0%Flights153
- American AirlinesOn-time68%Medianon timep9080 minCancel3.1%Flights1,170
- Republic AirwaysOn-time67%Medianon timep9060 minCancel9.8%Flights61
Why flights run late
Delay causes
- Airline25%
- Weather2%
- Air traffic (NAS)32%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline14%
- Weather74%
- Air traffic (NAS)12%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 57 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 AUS → 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 — 86% on time.
- Mornings86% on time · p90 20 min · 3,608 flights
- Middays79% on time · p90 35 min · 2,487 flights
- Evenings66% on time · p90 75 min · 1,494 flights
- Afternoons65% on time · p90 85 min · 1,674 flights
- Overnights62% on time · p90 135 min · 100 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 81% on time.
- Saturdays81% on time · p90 30 min · 1,106 flights
- Tuesdays80% on time · p90 40 min · 1,269 flights
- Wednesdays78% on time · p90 45 min · 1,296 flights
- Mondays77% on time · p90 50 min · 1,422 flights
- Thursdays76% on time · p90 40 min · 1,431 flights
- Fridays74% on time · p90 50 min · 1,448 flights
- Sundays74% on time · p90 60 min · 1,391 flights
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