LAS to SAT flight delays & on-time performance
Nonstop flights from Harry Reid International Airport to San Antonio International Airport · 1,069 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAS or SAT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Las Vegas (LAS) to San Antonio (SAT) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.3% were cancelled, and 6% arrived an hour or more late.
- Spirit Airlines was the most punctual airline here (83% on time); Southwest Airlines was the least (72%).
- Departures scheduled around 7am did best (95% on time); around 8pm did worst (52%).
- Saturday was the most reliable day to fly (85% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from LAS 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 |
|---|---|---|---|---|---|
| Spirit Airlines | 83% | 0.5% | 19 min | 7.2% | 182 |
| Frontier Airlines | 82% | 0.7% | 12 min | 5.9% | 290 |
| Southwest Airlines | 72% | 0.2% | 15 min | 6.3% | 1,552 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%188 flights
- 7am95%165 flights
- 8am88%125 flights
- 9am82%159 flights
- 10am81%109 flights
- 11am83%99 flights
- 12pm82%110 flights
- 1pm72%115 flights
- 2pm64%86 flights
- 3pm60%219 flights
- 4pm61%118 flights
- 5pm65%151 flights
- 6pm79%98 flights
- 7pm54%139 flights
- 8pm52%68 flights
- 9pm56%40 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%0.0% cancelled
- Tuesday80%0.0% cancelled
- Wednesday78%0.0% cancelled
- Thursday72%0.6% cancelled
- Friday70%0.9% cancelled
- Saturday85%0.0% cancelled
- Sunday69%0.3% 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 aircraft51%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion14%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)50%
- Extreme weather33%
- Air traffic control & airport congestion17%
- Security0%
LAS to SAT: common questions
- How often are LAS to SAT flights on time?
- 75% 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 Las Vegas to San Antonio cancelled?
- 0.3% of scheduled flights were cancelled (6 of 2,024).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 53 min behind schedule on average, and 6.4% of flights were an hour or more late.
- How long is taxi time at LAS?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to LAS — 80% on time
More flights from Las Vegas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAS → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.