Historical on-time performance
Chicago to Austin
972 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–AUS arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.4%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-time77%Medianon timep9035 minCancel0.4%Flights1,365
Why flights run late
Delay causes
- Airline31%
- Weather2%
- Air traffic (NAS)22%
- Late aircraft45%
- 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 MDW → AUS
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 — 87% on time.
- Mornings87% on time · p90 15 min · 1,572 flights
- Middays78% on time · p90 30 min · 810 flights
- Afternoons74% on time · p90 40 min · 646 flights
- Overnights69% on time · p90 55 min · 885 flights
- Evenings63% on time · p90 55 min · 564 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.
- Tuesdays83% on time · p90 25 min · 652 flights
- Wednesdays79% on time · p90 30 min · 650 flights
- Thursdays77% on time · p90 30 min · 685 flights
- Mondays77% on time · p90 30 min · 689 flights
- Saturdays75% on time · p90 35 min · 457 flights
- Sundays73% on time · p90 45 min · 650 flights
- Fridays73% on time · p90 40 min · 694 flights
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