HOU to SAT flight delays & on-time performance
Nonstop flights from William P. Hobby Airport to San Antonio International Airport · 192 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at HOU or SAT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (HOU) to San Antonio (SAT) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.1% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (94% on time); around 9pm did worst (60%).
- Tuesday was the most reliable day to fly (84% on time) and Sunday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (54%).
Which airline is most on time from HOU to SAT?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 78% | 0.1% | 12 min | 5.7% | 1,330 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am94%68 flights
- 8am94%125 flights
- 9am89%45 flights
- 10am85%202 flights
- 11am86%103 flights
- 1pm75%16 flights
- 2pm65%175 flights
- 3pm81%36 flights
- 4pm87%68 flights
- 5pm71%17 flights
- 6pm97%34 flights
- 7pm57%14 flights
- 8pm74%209 flights
- 9pm60%57 flights
- 10pm63%161 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%0.0% cancelled
- Tuesday84%0.0% cancelled
- Wednesday82%0.0% cancelled
- Thursday77%0.0% cancelled
- Friday80%0.5% cancelled
- Saturday78%0.0% cancelled
- Sunday71%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft54%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion12%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
HOU to SAT: common questions
- How often are HOU to SAT flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Houston to San Antonio cancelled?
- 0.1% of scheduled flights were cancelled (1 of 1,330).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 5.7% of flights were an hour or more late.
- How long is taxi time at HOU?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to HOU — 75% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: HOU → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.