SAT to LAS flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Harry Reid International Airport · 1,069 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to Las Vegas (LAS) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.5% were cancelled, and 6% arrived an hour or more late.
- Spirit Airlines was the most punctual airline here (81% on time); Frontier Airlines was the least (77%).
- Departures scheduled around 6am did best (96% on time); around 8pm did worst (60%).
- Tuesday was the most reliable day to fly (90% on time) and Friday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from SAT to LAS?
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 | 81% | 0.6% | 20 min | 7.8% | 180 |
| Southwest Airlines | 80% | 0.4% | 11 min | 5.4% | 1,569 |
| Frontier Airlines | 77% | 1.0% | 17 min | 9.4% | 291 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am93%122 flights
- 6am96%222 flights
- 7am89%73 flights
- 8am98%47 flights
- 9am93%69 flights
- 10am89%101 flights
- 11am86%112 flights
- 12pm83%169 flights
- 1pm85%120 flights
- 2pm74%179 flights
- 3pm82%84 flights
- 4pm73%85 flights
- 5pm68%159 flights
- 6pm77%96 flights
- 7pm69%74 flights
- 8pm60%199 flights
- 9pm63%120 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.0% cancelled
- Tuesday90%0.8% cancelled
- Wednesday87%0.0% cancelled
- Thursday73%0.3% cancelled
- Friday68%0.9% cancelled
- Saturday88%1.3% cancelled
- Sunday81%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%
- Air traffic control & airport congestion25%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)60%
- Extreme weather20%
- Air traffic control & airport congestion20%
- Security0%
SAT to LAS: common questions
- How often are SAT to LAS flights on time?
- 80% 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 San Antonio to Las Vegas cancelled?
- 0.5% of scheduled flights were cancelled (10 of 2,040).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 6.2% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to SAT — 75% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.