San Antonio (SAT) to Houston (HOU): On-Time Performance
Data through July 2026
When you fly SAT to HOU matters as much as anything else about the booking: the route swung from 93% on-time in January 2025 to just 55% in May 2026. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 61%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 3.7
- last 12 months
- Duration
- 60m
- scheduled
- Distance
- 192 mi
Monthly on-time trend
Best time to fly from SAT to HOU
Aim for departures around 5 a.m. (95% on-time); avoid 5 p.m. departures (44%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 12 min |
| Tuesdaybest | 82% | 13 min |
| Wednesday | 76% | 14 min |
| Thursday | 72% | 14 min |
| Friday | 78% | 14 min |
| Saturday | 80% | 9 min |
| Sunday | 73% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations19%
- National airspace system33%
- Weather1%
Frequently asked questions
- How often are flights from SAT to HOU delayed?
- 23% of SAT–HOU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from SAT to HOU?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 5 p.m. have the worst (44%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAT to HOU?
- The scheduled SAT–HOU flight time averages 60m over 192 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are SAT to HOU flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SAT to HOU?
- May 2026 was the roughest month in this dataset, with only 55% of arrivals on time. The best was January 2025 at 93%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 3,000 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.