SAT (San Antonio) to MIA (Miami) flights arrive on time 86% of the time. The most reliable airline on this route is American Airlines at 90%. The average delay is 83 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.SAT → MIA
SAT (San Antonio) to MIA (Miami)
SAT → MIA on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 86% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
American Airlines is significantly more reliable on this route at 90% on time vs null at 71%.
Airline Comparison
American Airlines leads at 90% on time; trails at 71%.
Accurate?
Good to know
Departing from SAT
81% on timeTSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at MIA
76% on timeWhen flights into MIA are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at MIA: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what American Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of SAT? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.