Best Time to Fly LAS to SLC: On-Time Stats by Hour & Airline
Harry Reid International → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
3,744 flights were scheduled from Las Vegas (LAS) to Salt Lake City (SLC) in the last 12 months, and 82.8% of those that flew arrived on time, 5.1 points above the US average of 77.6%.
Frontier Airlines was the most punctual of the 4 airlines on the route at 89.6%, while Southwest Airlines trailed at 76.2%.
November has been the best month (89% on time) and Sunday the weakest day of the week (78%).
0.7% of flights were cancelled, versus 1.8% nationally.
LAS to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Frontier Airlines | 89.6% | 76 min | 1.3% | 528 |
| Delta Air Lines | 86.2% | 72 min | 0.6% | 1,717 |
| Spirit Airlines | 82.0% | 126 min | 3.9% | 52 |
| Southwest Airlines | 76.2% | 48 min | 0.5% | 1,445 |
| SkyWest Airlines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to SLC
On-time arrival % by scheduled departure hour (local time), 7,798 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 95.7% | 0.5% | 998 |
| 7am–8am | 92.3% | 0.2% | 482 |
| 8am–9am | 91.1% | 0.0% | 440 |
| 9am–10am | 93.1% | 0.4% | 233 |
| 10am–11am | 89.8% | 0.4% | 761 |
| 11am–12pm | 85.2% | 0.3% | 305 |
| 12pm–1pm | 85.2% | 0.0% | 284 |
| 1pm–2pm | 81.7% | 0.3% | 888 |
| 2pm–3pm | 76.3% | 1.4% | 291 |
| 3pm–4pm | 80.8% | 1.1% | 269 |
| 4pm–5pm | 75.1% | 0.3% | 354 |
| 5pm–6pm | 74.0% | 0.6% | 892 |
| 6pm–7pm | 69.7% | 1.2% | 247 |
| 7pm–8pm | 77.6% | 0.3% | 749 |
| 8pm–9pm | 68.1% | 0.5% | 217 |
| 9pm–10pm | 75.4% | 0.9% | 230 |
| 10pm–11pm | 63.6% | 0.7% | 144 |
| 11pm–12am | Limited data | 14 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 91.1% | +7.1 pts | 0.0% | 135 |
| Christmas & New Year (Dec 20 - Jan 3) | 83.0% | -1.0 pts | 1.3% | 311 |
| Summer peak (Jun 15 - Aug 15) | 76.4% | -7.6 pts | 0.5% | 1,254 |
| All other days | 84.0% | — | 0.4% | 6,098 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).