Salt Lake City (SLC) to Las Vegas (LAS): On-Time Performance
Data through July 2026
Salt Lake City (SLC) to Las Vegas (LAS) effectively runs on two schedules. In December 2024, 84% of arrivals were on time; in July 2024 that fell to 67% — a 18-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 71%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 10
- last 12 months
- Duration
- 1h 30m
- scheduled
- Distance
- 368 mi
Best airline from SLC to LAS
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 78% | 14 min | 0.6% | 3,605 |
| Frontier Airlines | 77% | 23 min | 1.7% | 1,019 |
| Southwest Airlines | 76% | 13 min | 0.4% | 3,072 |
| Spirit Airlines | 71% | 24 min | 1.0% | 478 |
Monthly on-time trend
Best time to fly from SLC to LAS
Aim for departures around 6 a.m. (98% on-time); avoid 4 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 16 min |
| Tuesday | 84% | 10 min |
| Wednesday | 82% | 11 min |
| Thursday | 70% | 20 min |
| Friday | 71% | 21 min |
| Saturdaybest | 85% | 9 min |
| Sunday | 75% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations32%
- National airspace system30%
- Weather3%
Frequently asked questions
- How often are flights from SLC to LAS delayed?
- 23% of SLC–LAS 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 15 minutes.
- Which airline is most reliable from SLC to LAS?
- Delta Air Lines has the best on-time record on this route at 78%, based on 3,605 flights. 4 airlines flew SLC–LAS frequently enough to compare in this period.
- What is the best time of day to fly from SLC to LAS?
- Departures around 6 a.m. have the best record (98% on-time), while departures around 4 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to LAS?
- The scheduled SLC–LAS flight time averages 1h 30m over 368 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are SLC to LAS 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 SLC to LAS?
- July 2024 was the roughest month in this dataset, with only 67% of arrivals on time. The best was December 2024 at 84%. If your dates are flexible, that 18-point gap is worth planning around.
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Based on 8,181 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.