San Diego (SAN) to Las Vegas (LAS): On-Time Performance
Data through July 2026
The calendar drives reliability on SAN–LAS. January 2026 flights landed on schedule 83% of the time, but October 2024 dropped to 64% — a gap of 19 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 67%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 15
- last 12 months
- Duration
- 1h 25m
- scheduled
- Distance
- 258 mi
Best airline from SAN to LAS
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 78% | 16 min | 1.8% | 1,537 |
| Southwest Airlines | 75% | 15 min | 1.2% | 7,828 |
| SkyWest Airlines | 72% | 21 min | 1.4% | 3,190 |
| Frontier Airlines | 65% | 41 min | 2.2% | 954 |
Monthly on-time trend
Best time to fly from SAN to LAS
Aim for departures around 6 a.m. (96% on-time); avoid 8 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 18 min |
| Tuesdaybest | 84% | 10 min |
| Wednesday | 83% | 12 min |
| Thursday | 65% | 25 min |
| Friday | 62% | 28 min |
| Saturday | 83% | 12 min |
| Sunday | 72% | 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 aircraft47%
- Airline operations23%
- National airspace system25%
- Weather5%
Frequently asked questions
- How often are flights from SAN to LAS delayed?
- 26% of SAN–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 18 minutes.
- Which airline is most reliable from SAN to LAS?
- Spirit Airlines has the best on-time record on this route at 78%, based on 1,537 flights. 4 airlines flew SAN–LAS frequently enough to compare in this period.
- What is the best time of day to fly from SAN to LAS?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 8 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 SAN to LAS?
- The scheduled SAN–LAS flight time averages 1h 25m over 258 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are SAN to LAS flights cancelled?
- 1.4% 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 SAN to LAS?
- October 2024 was the roughest month in this dataset, with only 64% of arrivals on time. The best was January 2026 at 83%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 13,510 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.