Southwest Airlines is the most reliable airline on the SAT to MDW route with a 85% on-time rate. Based on 2,496 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SAT to MDW
San Antonio to Chicago — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines85%
SAT to MDW Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 85% | 0.8% | 45m | 2,496 |
Route Overview
86%
Overall On-Time
46m
Avg Delay
0.8%
Cancel Rate
2,496
Total Flights
Flying out of SAT? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.