Las Vegas (LAS) to Miami (MIA): On-Time Performance
Data through July 2026
Las Vegas (LAS) to Miami (MIA) effectively runs on two schedules. In November 2024, 91% of arrivals were on time; in July 2024 that fell to 49% — a 43-point seasonal swing. Across the full period the route averages 81% on-time against a national 78%.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 3.9
- last 12 months
- Duration
- 4h 46m
- scheduled
- Distance
- 2,174 mi
Best airline from LAS to MIA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 82% | 11 min | 1.5% | 407 |
| American Airlines | 81% | 19 min | 0.8% | 2,756 |
| Frontier Airlines | 68% | 18 min | 0.8% | 131 |
Monthly on-time trend
Best time to fly from LAS to MIA
Aim for departures around 9 a.m. (90% on-time); avoid 11 a.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 19 min |
| Tuesdaybest | 87% | 13 min |
| Wednesday | 83% | 13 min |
| Thursday | 78% | 20 min |
| Friday | 80% | 20 min |
| Saturday | 82% | 16 min |
| Sunday | 75% | 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 aircraft34%
- Airline operations48%
- National airspace system15%
- Weather3%
Frequently asked questions
- How often are flights from LAS to MIA delayed?
- 19% of LAS–MIA 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 LAS to MIA?
- Spirit Airlines has the best on-time record on this route at 82%, based on 407 flights. 3 airlines flew LAS–MIA frequently enough to compare in this period.
- What is the best time of day to fly from LAS to MIA?
- Departures around 9 a.m. have the best record (90% on-time), while departures around 11 a.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to MIA?
- The scheduled LAS–MIA flight time averages 4h 46m over 2,174 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are LAS to MIA flights cancelled?
- 0.8% 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 MIA?
- July 2024 was the roughest month in this dataset, with only 49% of arrivals on time. The best was November 2024 at 91%. If your dates are flexible, that 43-point gap is worth planning around.
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Based on 3,300 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.