Historical on-time performance
Chicago to Austin
972 miData through May 2026Source: US DOT · BTS
Flights on MDW–AUS arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 1,351 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9035 minCancel0.7%Flights1,351
Why flights run late
Delay causes
- Airline31%
- Weather3%
- Air traffic (NAS)20%
- Late aircraft46%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline10%
- Weather80%
- Air traffic (NAS)10%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 10 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 MDW → 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 — 88% on time.
- Mornings88% on time · p90 15 min · 1,438 flights
- Middays79% on time · p90 30 min · 837 flights
- Afternoons75% on time · p90 40 min · 702 flights
- Overnights67% on time · p90 60 min · 860 flights
- Evenings63% on time · p90 55 min · 534 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 84% on time.
- Tuesdays84% on time · p90 25 min · 622 flights
- Wednesdays80% on time · p90 30 min · 620 flights
- Thursdays77% on time · p90 30 min · 678 flights
- Saturdays76% on time · p90 30 min · 456 flights
- Mondays75% on time · p90 35 min · 673 flights
- Fridays74% on time · p90 40 min · 689 flights
- Sundays73% on time · p90 45 min · 633 flights
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