SAT (San Antonio) to IAH (Houston) flights arrive on time 83% of the time. The most reliable airline on this route is SkyWest Airlines at 89%. The average delay is 82 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.SAT → IAH
SAT (San Antonio) to IAH (Houston)
SAT → IAH on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 83% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
SkyWest Airlines edges out United Airlines on this route — 89% vs 83% on time.
Airline Comparison
SkyWest Airlines leads at 89% on time; United Airlines trails at 83%.
Accurate?
Good to know
Departing from SAT
81% on timeTSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at IAH
80% on timeWhen flights into IAH are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at IAH: TSA is ~27 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what SkyWest Airlines owes you — refund rights, action plan, complaint email. Free.
Let us watch your flight
We worry about delays, TSA, weather, and gates so you don't have to.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated May 2026. Source: Bureau of Transportation Statistics.