SAT (San Antonio) to ATL (Atlanta) flights arrive on time 85% of the time. The most reliable airline on this route is Delta Air Lines at 86%. The average delay is 72 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.SAT → ATL
SAT (San Antonio) to ATL (Atlanta)
SAT → ATL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 85% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Delta Air Lines is significantly more reliable on this route at 86% on time vs Spirit Airlines at 62%.
Airline Comparison
Delta Air Lines leads at 86% on time; Spirit Airlines trails at 62%.
Accurate?
Good to know
Departing from SAT
81% on timeTSA is currently ~22 min. Best time: 4 AM (about 5 min).
Arriving at ATL
80% on timeWhen flights into ATL are late, the average delay is 72 minutes. Build buffer if you have ground plans.
If connecting at ATL: TSA is ~9 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Delta Air Lines 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.