Sacramento (SMF) to Las Vegas (LAS): On-Time Performance
Data through July 2026
When you fly SMF to LAS matters as much as anything else about the booking: the route swung from 89% on-time in November 2024 to just 73% in July 2024. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 74%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 11
- last 12 months
- Duration
- 1h 29m
- scheduled
- Distance
- 397 mi
Best airline from SMF to LAS
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 84% | 13 min | 0.7% | 1,056 |
| Spirit Airlines | 83% | 13 min | 1.4% | 1,341 |
| Southwest Airlines | 81% | 11 min | 0.3% | 7,267 |
| Frontier Airlines | 80% | 14 min | 2.3% | 482 |
Monthly on-time trend
Best time to fly from SMF to LAS
Aim for departures around 5 a.m. (96% on-time); avoid 10 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 12 min |
| Tuesday | 86% | 8 min |
| Wednesday | 87% | 7 min |
| Thursday | 76% | 17 min |
| Friday | 74% | 17 min |
| Saturdaybest | 88% | 8 min |
| Sunday | 81% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations27%
- National airspace system24%
- Weather4%
Frequently asked questions
- How often are flights from SMF to LAS delayed?
- 19% of SMF–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 12 minutes.
- Which airline is most reliable from SMF to LAS?
- SkyWest Airlines has the best on-time record on this route at 84%, based on 1,056 flights. 4 airlines flew SMF–LAS frequently enough to compare in this period.
- What is the best time of day to fly from SMF to LAS?
- Departures around 5 a.m. have the best record (96% on-time), while departures around 10 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SMF to LAS?
- The scheduled SMF–LAS flight time averages 1h 29m over 397 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are SMF to LAS flights cancelled?
- 0.6% 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 SMF to LAS?
- July 2024 was the roughest month in this dataset, with only 73% of arrivals on time. The best was November 2024 at 89%. If your dates are flexible, that 16-point gap is worth planning around.
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Based on 10,146 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.