SAT to LAS flight delays
San Antonio, TX (SAT) Las Vegas, NV (LAS) · 1,069 miles
157 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
62.34%
Arrived on time
Within 15 minutes of schedule
1.27%
Cancelled
Share of scheduled flights
64 min
When late, late by
Average across delayed arrivals
25 min
Delay per flight
Averaged over every flight flown
What the record says about this route
This is a late route. Flights from San Antonio to Las Vegas miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
This route does worse than its own airport. SAT as a whole runs 9.2 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
The two directions do not behave alike. LAS to SAT arrives on time 5.3 points more 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.
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 SAT to LAS.
Every airline on SAT to LAS
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 | 127 | 63.2% | 0.79% | 53 min | D |
| Frontier Airlines | 30 | 58.62% | 3.33% | 105 min | — |
The return leg
LAS to SAT Las Vegas back to San Antonio 67.59% on time DOther routes from San Antonio
Common questions
Are flights from San Antonio to Las Vegas usually delayed?
62.34% of flights on the SAT to LAS route arrived within 15 minutes of schedule, so roughly 4 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from San Antonio to Las Vegas?
Only Southwest Airlines appears in the published record on this route, with 127 flights and 63.2% arriving on time.
How often are SAT to LAS flights cancelled?
1.27% of scheduled flights did not operate — about 13 in every thousand. That is in the normal range.
When SAT to LAS flights are late, how late are they?
About 64 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 SAT to LAS 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 →