Southwest Airlines is the most reliable airline on the MDW to SAT route with a 77% on-time rate. Based on 2,478 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: MDW to SAT
Chicago to San Antonio — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines77%
MDW to SAT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 77% | 0.9% | 53m | 2,478 |
Route Overview
77%
Overall On-Time
54m
Avg Delay
0.8%
Cancel Rate
2,478
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.