Las Vegas (LAS) to San Diego (SAN): On-Time Performance
Data through July 2026
When you fly LAS to SAN matters as much as anything else about the booking: the route swung from 78% on-time in January 2025 to just 52% in July 2026. Across the full period the route averages 67% on-time against a national 78%. Morning departures also hold up better than evening ones (73% vs 57%), which matters most in the rough months.
- On-time
- 67%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 15
- last 12 months
- Duration
- 1h 16m
- scheduled
- Distance
- 258 mi
Best airline from LAS to SAN
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 78% | 15 min | 1.0% | 1,540 |
| SkyWest Airlines | 68% | 22 min | 1.3% | 3,191 |
| Frontier Airlines | 66% | 30 min | 1.7% | 954 |
| Southwest Airlines | 65% | 19 min | 1.0% | 7,853 |
Monthly on-time trend
Best time to fly from LAS to SAN
Aim for departures around 6 a.m. (89% on-time); avoid 7 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 65% | 22 min |
| Tuesdaybest | 79% | 13 min |
| Wednesday | 78% | 13 min |
| Thursday | 59% | 25 min |
| Friday | 58% | 28 min |
| Saturday | 78% | 13 min |
| Sunday | 61% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations32%
- National airspace system31%
- Weather5%
Frequently asked questions
- How often are flights from LAS to SAN delayed?
- 33% of LAS–SAN 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 20 minutes.
- Which airline is most reliable from LAS to SAN?
- Spirit Airlines has the best on-time record on this route at 78%, based on 1,540 flights. 4 airlines flew LAS–SAN frequently enough to compare in this period.
- What is the best time of day to fly from LAS to SAN?
- Departures around 6 a.m. have the best record (89% on-time), while departures around 7 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to SAN?
- The scheduled LAS–SAN flight time averages 1h 16m over 258 miles. Actual arrival times vary — flights on this route land 15+ minutes late 33% of the time.
- How often are LAS to SAN flights cancelled?
- 1.1% 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 LAS to SAN?
- July 2026 was the roughest month in this dataset, with only 52% of arrivals on time. The best was January 2025 at 78%. If your dates are flexible, that 26-point gap is worth planning around.
Explore related pages
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Based on 13,539 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.