Historical on-time performance
San Antonio to Chicago
Flights on SAT–MDW arrive on time 81% of the time over the last 12 months.
based on 657 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9025 minCancel0.9%Flights657
Why flights run late
Delay causes
- Airline26%
- Weather1%
- Air traffic (NAS)25%
- Late aircraft47%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline17%
- Weather83%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 6 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 SAT → MDW
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 75% to 92% on time.
- Mornings92% on time · p90 10 min · 997 flights
- Middays87% on time · p90 15 min · 122 flights · limited
- Afternoons75% on time · p90 35 min · 887 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.
- Saturdays88% on time · p90 15 min · 260 flights
- Wednesdays86% on time · p90 15 min · 303 flights
- Tuesdays85% on time · p90 25 min · 303 flights
- Mondays84% on time · p90 25 min · 313 flights
- Fridays84% on time · p90 25 min · 314 flights
- Sundays81% on time · p90 20 min · 297 flights
- Thursdays79% on time · p90 30 min · 312 flights
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