Historical on-time performance
Chicago to Austin
978 miData through May 2026Source: US DOT · BTS
Flights on ORD–AUS arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.9%of scheduled flights
based on 2,856 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time77%Medianon timep9045 minCancel1.0%Flights1,434
- Envoy AirOn-time72%Medianon timep90110 minCancel2.8%Flights36
- American AirlinesOn-time66%Medianon timep9075 minCancel2.8%Flights1,171
- Southwest AirlinesOn-time66%Medianon timep9055 minCancel0.7%Flights153
- Republic AirwaysOn-time58%Medianon timep9065 minCancel8.1%Flights62
Why flights run late
Delay causes
- Airline25%
- Weather7%
- Air traffic (NAS)17%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline7%
- Weather80%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 55 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 → AUS
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 — 83% on time.
- Mornings83% on time · p90 25 min · 2,698 flights
- Middays76% on time · p90 45 min · 2,465 flights
- Afternoons68% on time · p90 60 min · 1,325 flights
- Evenings67% on time · p90 70 min · 1,648 flights
- Overnights63% on time · p90 80 min · 1,226 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 77% on time.
- Tuesdays77% on time · p90 50 min · 1,270 flights
- Saturdays76% on time · p90 40 min · 1,099 flights
- Wednesdays76% on time · p90 45 min · 1,302 flights
- Mondays74% on time · p90 50 min · 1,418 flights
- Fridays72% on time · p90 55 min · 1,448 flights
- Thursdays71% on time · p90 55 min · 1,433 flights
- Sundays70% on time · p90 60 min · 1,397 flights
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