Best Time to Fly LAX to MIA: On-Time Stats by Hour & Airline
Los Angeles International → Miami International
Data through July 2026 · Last updated October 18, 2026
3,255 flights were scheduled from Los Angeles (LAX) to Miami (MIA) in the last 12 months, and 78.1% of those that flew arrived on time, in line with the US average of 77.6%.
American Airlines was the most punctual of the 2 airlines on the route at 78.8%, while Delta Air Lines trailed at 73.5%.
September has been the best month (86% on time) and Sunday the weakest day of the week (76%).
0.8% of flights were cancelled, versus 1.8% nationally.
LAX 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 | 78.8% | 69 min | 0.6% | 2,760 |
| Delta Air Lines | 73.5% | 53 min | 1.6% | 495 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAX to MIA
On-time arrival % by scheduled departure hour (local time), 6,454 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 86.9% | 0.5% | 207 |
| 5am–6am | 85.4% | 0.0% | 48 |
| 6am–7am | 87.8% | 0.2% | 609 |
| 7am–8am | 85.5% | 0.6% | 327 |
| 8am–9am | 85.4% | 0.8% | 496 |
| 9am–10am | 77.5% | 1.0% | 688 |
| 10am–11am | 71.3% | 0.7% | 543 |
| 11am–12pm | 77.5% | 0.5% | 219 |
| 12pm–1pm | 72.0% | 0.4% | 526 |
| 1pm–2pm | 75.8% | 0.0% | 504 |
| 2pm–3pm | 75.3% | 1.1% | 180 |
| 3pm–4pm | 71.5% | 0.8% | 117 |
| 8pm–9pm | 73.6% | 0.0% | 72 |
| 9pm–10pm | 80.5% | 0.2% | 459 |
| 10pm–11pm | 81.0% | 0.5% | 768 |
| 11pm–12am | 78.4% | 0.6% | 691 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAX 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) | 84.1% | +2.6 pts | 0.0% | 126 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.5% | -9.1 pts | 0.0% | 305 |
| Summer peak (Jun 15 - Aug 15) | 70.3% | -11.2 pts | 0.7% | 1,091 |
| All other days | 81.5% | — | 0.5% | 4,932 |
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).