MIA (Miami) to SAT (San Antonio) flights arrive on time 68% of the time. The most reliable airline on this route is null at 74%. The average delay is 59 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.MIA → SAT
MIA (Miami) to SAT (San Antonio)
MIA → SAT on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 68% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
null edges out American Airlines on this route — 74% vs 66% on time.
Airline Comparison
leads at 74% on time; American Airlines trails at 66%.
Accurate?
Good to know
Departing from MIA
76% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. MIA has long runway queues.
TSA is currently ~20 min. Best time: 4 AM (about 5 min).
Arriving at SAT
81% on timeWhen flights into SAT are late, the average delay is 67 minutes. Build buffer if you have ground plans.
If connecting at SAT: TSA is ~18 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.