DTW (Detroit) to SAT (San Antonio) flights arrive on time 82% of the time. The most reliable airline on this route is Spirit Airlines at 90%. The average delay is 60 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.DTW → SAT
DTW (Detroit) to SAT (San Antonio)
DTW → SAT on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 82% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Spirit Airlines edges out Delta Air Lines on this route — 90% vs 82% on time.
Airline Comparison
Spirit Airlines leads at 90% on time; Delta Air Lines trails at 82%.
Accurate?
Good to know
Departing from DTW
84% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. DTW has long runway queues.
TSA is currently ~11 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.