Historical on-time performance
Austin to Chicago
972 miData through Dec 2025Source: US DOT · BTS
Flights on AUS–MDW arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 1,365 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time80%Medianon timep9035 minCancel0.9%Flights1,365
Why flights run late
Delay causes
- Airline22%
- Weather4%
- Air traffic (NAS)10%
- Late aircraft65%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly AUS → MDW
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 5 min · 1,340 flights
- Middays86% on time · p90 20 min · 1,006 flights
- Afternoons74% on time · p90 40 min · 779 flights
- Overnights73% on time · p90 60 min · 626 flights
- Evenings64% on time · p90 55 min · 724 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 86% on time.
- Saturdays86% on time · p90 15 min · 457 flights
- Tuesdays84% on time · p90 20 min · 651 flights
- Wednesdays81% on time · p90 35 min · 650 flights
- Mondays80% on time · p90 35 min · 689 flights
- Fridays79% on time · p90 30 min · 694 flights
- Thursdays79% on time · p90 35 min · 684 flights
- Sundays75% on time · p90 50 min · 650 flights
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