Las Vegas (LAS) to Salt Lake City (SLC): On-Time Performance
Data through July 2026
Las Vegas (LAS) to Salt Lake City (SLC) effectively runs on two schedules. In November 2024, 92% of arrivals were on time; in July 2024 that fell to 72% — a 20-point seasonal swing. Across the full period the route averages 82% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 73%), which matters most in the rough months.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 10
- last 12 months
- Duration
- 1h 28m
- scheduled
- Distance
- 368 mi
Best airline from LAS to SLC
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Frontier Airlinesmost reliable | 87% | 10 min | 1.4% | 1,020 |
| Delta Air Lines | 85% | 12 min | 0.6% | 3,603 |
| Southwest Airlines | 79% | 12 min | 0.3% | 3,071 |
| Spirit Airlines | 73% | 19 min | 1.0% | 477 |
Monthly on-time trend
Best time to fly from LAS to SLC
Aim for departures around 6 a.m. (96% on-time); avoid 10 p.m. departures (64%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 12 min |
| Tuesday | 87% | 8 min |
| Wednesday | 87% | 8 min |
| Thursday | 79% | 15 min |
| Friday | 79% | 15 min |
| Saturdaybest | 88% | 10 min |
| Sunday | 78% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft56%
- Airline operations31%
- National airspace system12%
Frequently asked questions
- How often are flights from LAS to SLC delayed?
- 18% of LAS–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from LAS to SLC?
- Frontier Airlines has the best on-time record on this route at 87%, based on 1,020 flights. 4 airlines flew LAS–SLC frequently enough to compare in this period.
- What is the best time of day to fly from LAS to SLC?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 10 p.m. have the worst (64%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to SLC?
- The scheduled LAS–SLC flight time averages 1h 28m over 368 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are LAS to SLC flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to SLC?
- July 2024 was the roughest month in this dataset, with only 72% of arrivals on time. The best was November 2024 at 92%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 8,178 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.