SLC to LAS flight delays
Salt Lake City, UT (SLC) Las Vegas, NV (LAS) · 368 miles
293 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
71.67%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
56 min
When late, late by
Average across delayed arrivals
17 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Delta Air Lines arrived on time 9.5 points more often than Southwest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
This route does worse than its own airport. SLC as a whole runs 10.1 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 SLC arrives on time 5.5 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.
This is a thin route — 293 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over March 2025 – August 2026, Delta Air Lines arrived on time most often on SLC to LAS. Southwest Airlines was late most often.
Every airline on SLC 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 |
|---|---|---|---|---|---|
| Delta Air Lines | 146 | 75.34% | 0% | 58 min | C |
| Southwest Airlines | 117 | 65.81% | 0% | 55 min | D |
| Frontier Airlines | 30 | 76.67% | 0% | 50 min | — |
The return leg
LAS to SLC Las Vegas back to Salt Lake City 77.13% on time COther routes from Salt Lake City
Common questions
Are flights from Salt Lake City to Las Vegas usually delayed?
71.67% of flights on the SLC to LAS 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 airline is most on time from Salt Lake City to Las Vegas?
Delta Air Lines, at 75.34% on time across 146 flights. The least punctual on the route was Southwest Airlines at 65.81%.
How often are SLC to LAS flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
When SLC to LAS flights are late, how late are they?
About 56 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 SLC 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 →