Best Time to Fly MIA to LAS: On-Time Stats by Hour & Airline
Miami International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.7% of Miami (MIA) to Las Vegas (LAS) flights arrived on time (1,419 scheduled flights). That is 5.0 points below the national average of 77.6%.
American Airlines was the most punctual of the 3 airlines on the route at 73.5%, while Spirit Airlines trailed at 64.0%.
October has been the best month (80% on time) and Sunday the weakest day of the week (65%).
0.8% of flights were cancelled, versus 1.8% nationally.
MIA to LAS 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 | 73.5% | 60 min | 0.7% | 1,275 |
| Frontier Airlines | 65.9% | 79 min | 1.1% | 89 |
| Spirit Airlines | 64.0% | 67 min | 3.9% | 52 |
| Delta Air Lines | Limited data | 3 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to LAS
On-time arrival % by scheduled departure hour (local time), 3,188 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | 88.4% | 1.1% | 175 |
| 8am–9am | 89.3% | 0.7% | 424 |
| 9am–10am | 81.9% | 0.0% | 294 |
| 10am–11am | 87.9% | 0.0% | 33 |
| 11am–12pm | Limited data | 1 | |
| 12pm–1pm | Limited data | 5 | |
| 1pm–2pm | Limited data | 3 | |
| 2pm–3pm | Limited data | 5 | |
| 3pm–4pm | 73.7% | 0.6% | 180 |
| 4pm–5pm | 61.7% | 2.4% | 298 |
| 5pm–6pm | 61.3% | 0.3% | 335 |
| 6pm–7pm | 72.0% | 0.0% | 164 |
| 7pm–8pm | 72.0% | 0.5% | 429 |
| 8pm–9pm | 64.3% | 1.4% | 493 |
| 9pm–10pm | 66.9% | 1.3% | 315 |
| 10pm–11pm | 48.5% | 0.0% | 33 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to LAS
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) | 77.4% | +3.4 pts | 0.0% | 62 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.5% | -2.5 pts | 0.7% | 140 |
| Summer peak (Jun 15 - Aug 15) | 65.7% | -8.3 pts | 1.2% | 587 |
| All other days | 74.1% | — | 0.8% | 2,399 |
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).