Best Time to Fly SAN to LAS: On-Time Stats by Hour & Airline
San Diego International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
5,612 flights were scheduled from San Diego (SAN) to Las Vegas (LAS) in the last 12 months, and 75.0% of those that flew arrived on time, 2.6 points below the US average of 77.6%.
Among 4 airlines, Spirit Airlines led with 85.0% on time and Frontier Airlines was last with 66.3%.
Over 24 months, Tuesday was the most reliable day (84% on time) and October the worst month (68%).
The cancellation rate was 1.4% (US average 1.8%).
SAN to LAS 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 |
|---|---|---|---|---|
| Spirit Airlines | 85.0% | 70 min | 1.8% | 170 |
| SkyWest Airlines | 79.3% | 64 min | 1.3% | 1,321 |
| Southwest Airlines | 73.9% | 52 min | 1.3% | 3,747 |
| Frontier Airlines | 66.3% | 101 min | 1.6% | 374 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to LAS
On-time arrival % by scheduled departure hour (local time), 12,937 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 95.5% | 1.3% | 790 |
| 7am–8am | 93.2% | 0.7% | 619 |
| 8am–9am | 82.1% | 0.9% | 1,171 |
| 9am–10am | 82.1% | 0.6% | 858 |
| 10am–11am | 77.7% | 0.2% | 827 |
| 11am–12pm | 79.8% | 0.2% | 550 |
| 12pm–1pm | 64.1% | 0.8% | 718 |
| 1pm–2pm | 67.1% | 1.1% | 739 |
| 2pm–3pm | 68.2% | 1.5% | 728 |
| 3pm–4pm | 70.7% | 0.7% | 924 |
| 4pm–5pm | 65.1% | 1.0% | 485 |
| 5pm–6pm | 70.5% | 1.3% | 894 |
| 6pm–7pm | 70.6% | 1.1% | 996 |
| 7pm–8pm | 68.3% | 1.5% | 875 |
| 8pm–9pm | 61.3% | 2.5% | 756 |
| 9pm–10pm | 66.1% | 4.5% | 913 |
| 10pm–11pm | 83.2% | 5.3% | 94 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAN to LAS
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) | 76.5% | +0.8 pts | 1.3% | 233 |
| Christmas & New Year (Dec 20 - Jan 3) | 57.3% | -18.4 pts | 4.0% | 478 |
| Summer peak (Jun 15 - Aug 15) | 69.7% | -6.0 pts | 1.5% | 2,185 |
| All other days | 75.7% | — | 1.1% | 10,041 |
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).