LAS to SAT flight delays
Las Vegas, NV (LAS) San Antonio, TX (SAT) · 1,069 miles
149 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
67.59%
Arrived on time
Within 15 minutes of schedule
0.67%
Cancelled
Share of scheduled flights
50 min
When late, late by
Average across delayed arrivals
18 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. SAT to LAS arrives on time 5.3 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a late route. Flights from Las Vegas to San Antonio miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
Only Southwest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over March 2025 – August 2026, Southwest Airlines arrived on time most often on LAS to SAT.
Every airline on LAS to SAT
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 119 | 66.38% | 0% | 43 min | D |
| Frontier Airlines | 30 | 72.41% | 3.33% | 84 min | — |
The return leg
SAT to LAS San Antonio back to Las Vegas 62.34% on time FOther routes from Las Vegas
Common questions
Are flights from Las Vegas to San Antonio usually delayed?
67.59% of flights on the LAS to SAT route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Las Vegas to San Antonio?
Only Southwest Airlines appears in the published record on this route, with 119 flights and 66.38% arriving on time.
How often are LAS to SAT flights cancelled?
0.67% of scheduled flights did not operate — about 7 in every thousand. That is in the normal range.
When LAS to SAT flights are late, how late are they?
About 50 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LAS to SAT during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →