Houston (HOU) to San Antonio (SAT): On-Time Performance
Data through May 2026
When you fly HOU to SAT matters as much as anything else about the booking: the route swung from 93% on-time in September 2024 to just 55% in July 2024. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 72%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 3.9
- last 12 months
- Duration
- 1h 3m
- scheduled
- Distance
- 192 mi
Monthly on-time trend
Best time to fly from HOU to SAT
Aim for departures around 9 a.m. (95% on-time); avoid 7 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 14 min |
| Tuesdaybest | 83% | 10 min |
| Wednesday | 83% | 11 min |
| Thursday | 78% | 12 min |
| Friday | 80% | 10 min |
| Saturday | 81% | 9 min |
| Sunday | 78% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft55%
- Airline operations29%
- National airspace system13%
- Weather3%
Frequently asked questions
- How often are flights from HOU to SAT delayed?
- 20% of HOU–SAT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- What is the best time of day to fly from HOU to SAT?
- Departures around 9 a.m. have the best record (95% on-time), while departures around 7 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from HOU to SAT?
- The scheduled HOU–SAT flight time averages 1h 3m over 192 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are HOU to SAT flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from HOU to SAT?
- July 2024 was the roughest month in this dataset, with only 55% of arrivals on time. The best was September 2024 at 93%. If your dates are flexible, that 38-point gap is worth planning around.
Explore related pages
More routes from HOU
Based on 2,940 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.