Best Time to Fly LAS to SAN: On-Time Stats by Hour & Airline
Harry Reid International → San Diego International
Data through July 2026 · Last updated October 18, 2026
5,631 flights were scheduled from Las Vegas (LAS) to San Diego (SAN) in the last 12 months, and 65.1% of those that flew arrived on time, 12.5 points below the US average of 77.6%.
Spirit Airlines was the most punctual of the 4 airlines on the route at 80.4%, while Southwest Airlines trailed at 61.1%.
January has been the best month (75% on time) and Friday the weakest day of the week (58%).
1.0% of flights were cancelled, versus 1.8% nationally.
LAS to SAN 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 | 80.4% | 85 min | 0.6% | 169 |
| SkyWest Airlines | 73.8% | 60 min | 1.2% | 1,322 |
| Frontier Airlines | 68.5% | 89 min | 0.8% | 374 |
| Southwest Airlines | 61.1% | 49 min | 0.9% | 3,765 |
| Alaska Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to SAN
On-time arrival % by scheduled departure hour (local time), 12,966 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.9% | 1.4% | 139 |
| 6am–7am | 90.0% | 0.2% | 786 |
| 7am–8am | 79.4% | 0.7% | 1,252 |
| 8am–9am | 75.0% | 0.3% | 926 |
| 9am–10am | 72.5% | 0.3% | 674 |
| 10am–11am | 61.1% | 1.0% | 909 |
| 11am–12pm | 60.7% | 0.4% | 806 |
| 12pm–1pm | 71.7% | 0.6% | 872 |
| 1pm–2pm | 66.2% | 0.2% | 436 |
| 2pm–3pm | 66.6% | 0.9% | 699 |
| 3pm–4pm | 67.7% | 0.3% | 591 |
| 4pm–5pm | 68.7% | 0.9% | 1,172 |
| 5pm–6pm | 58.2% | 1.3% | 863 |
| 6pm–7pm | 56.5% | 2.2% | 595 |
| 7pm–8pm | 50.9% | 3.0% | 794 |
| 8pm–9pm | 57.2% | 1.9% | 472 |
| 9pm–10pm | 61.9% | 3.1% | 572 |
| 10pm–11pm | 64.3% | 2.4% | 379 |
| 11pm–12am | Limited data | 29 | |
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 SAN
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) | 66.5% | -2.8 pts | 0.4% | 234 |
| Christmas & New Year (Dec 20 - Jan 3) | 50.3% | -19.0 pts | 4.0% | 477 |
| Summer peak (Jun 15 - Aug 15) | 64.1% | -5.2 pts | 1.2% | 2,201 |
| All other days | 69.3% | — | 0.9% | 10,054 |
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).