Best Time to Fly LAS to MIA: On-Time Stats by Hour & Airline
Harry Reid International → Miami International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.4% of Las Vegas (LAS) to Miami (MIA) flights arrived on time (1,413 scheduled flights). That is 4.7 points above the national average of 77.6%.
Among 3 airlines, American Airlines led with 83.7% on time and Spirit Airlines was last with 64.6%.
Over 24 months, Tuesday was the most reliable day (89% on time) and July the worst month (72%).
The cancellation rate was 0.8% (US average 1.8%).
LAS to MIA 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 |
|---|---|---|---|---|
| American Airlines | 83.7% | 87 min | 0.8% | 1,275 |
| Frontier Airlines | 72.1% | 56 min | 0.0% | 86 |
| Spirit Airlines | 64.6% | 46 min | 2.0% | 49 |
| Delta Air Lines | Limited data | 3 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to MIA
On-time arrival % by scheduled departure hour (local time), 3,177 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 86.5% | 1.9% | 211 |
| 1am–2am | Limited data | 12 | |
| 5am–6am | 89.2% | 0.0% | 75 |
| 6am–7am | 84.6% | 0.6% | 159 |
| 7am–8am | 88.4% | 1.4% | 221 |
| 8am–9am | 83.5% | 0.8% | 384 |
| 9am–10am | Limited data | 29 | |
| 10am–11am | 87.8% | 0.0% | 49 |
| 11am–12pm | 70.0% | 1.6% | 61 |
| 12pm–1pm | 73.8% | 0.3% | 331 |
| 1pm–2pm | 77.4% | 1.3% | 394 |
| 2pm–3pm | 90.0% | 0.0% | 30 |
| 3pm–4pm | Limited data | 20 | |
| 4pm–5pm | Limited data | 1 | |
| 9pm–10pm | 75.7% | 1.8% | 109 |
| 10pm–11pm | 77.4% | 0.0% | 305 |
| 11pm–12am | 86.2% | 0.5% | 786 |
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 MIA
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) | 93.5% | +9.4 pts | 0.0% | 62 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -4.2 pts | 0.0% | 140 |
| Summer peak (Jun 15 - Aug 15) | 74.0% | -10.2 pts | 1.2% | 586 |
| All other days | 84.2% | — | 0.7% | 2,389 |
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).