SAT (San Antonio) to MDW (Chicago) flights arrive on time 88% of the time. The most reliable airline on this route is Southwest Airlines at 88%. The average delay is 48 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.SAT → MDW
SAT (San Antonio) to MDW (Chicago)
SAT → MDW on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 88% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
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Good to know
Departing from SAT
81% on timeTSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at MDW
78% on timeWhen flights into MDW are late, the average delay is 56 minutes. Build buffer if you have ground plans.
If connecting at MDW: TSA is ~25 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.