Houston, TX → San Antonio, TX flight delays
IAH → SAT · all airlines · 215 flights · April 2026 · source: US BTS
This route is delayed
17%of the time, by +51 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
83%
Delayed 3h+
0.5%
Cancelled
0%
Avg when late
+51m
Best & worst day to fly
Most on-time
Tuesday
delayed 6%
Worst
Thursday
delayed 30%
Frequently asked
How often is the Houston, TX to San Antonio, TX flight delayed?
About 17% of IAH → SAT flights arrive late (15+ minutes), by an average of 51 minutes when they do, based on 215 flights in April 2026.
What is the best day to fly IAH → SAT?
Tuesday is the most on-time (delayed 6%), while Thursday is the worst (delayed 30%).
Airport overviews