Best Time to Fly LGA to MIA: On-Time Stats by Hour & Airline
LaGuardia → Miami International
Data through July 2026 · Last updated October 18, 2026
5,986 flights were scheduled from New York (LGA) to Miami (MIA) in the last 12 months, and 70.4% of those that flew arrived on time, 7.2 points below the US average of 77.6%.
Among 4 airlines, American Airlines led with 71.2% on time and Spirit Airlines was last with 63.7%.
Over 24 months, Saturday was the most reliable day (79% on time) and July the worst month (64%).
The cancellation rate was 4.0% (US average 1.8%).
LGA 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 | 71.2% | 94 min | 3.6% | 3,560 |
| Delta Air Lines | 70.3% | 68 min | 3.8% | 1,916 |
| Frontier Airlines | 67.3% | 247 min | 10.1% | 119 |
| Spirit Airlines | 63.7% | 79 min | 7.5% | 387 |
| Republic Airways | Limited data | 4 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LGA to MIA
On-time arrival % by scheduled departure hour (local time), 11,904 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.5% | 0.0% | 52 |
| 6am–7am | 90.7% | 3.2% | 1,322 |
| 7am–8am | 86.4% | 2.7% | 1,183 |
| 8am–9am | 85.8% | 3.5% | 453 |
| 9am–10am | 78.0% | 2.2% | 1,157 |
| 10am–11am | 69.1% | 2.5% | 435 |
| 11am–12pm | 74.3% | 1.4% | 1,152 |
| 12pm–1pm | 80.0% | 0.8% | 244 |
| 1pm–2pm | 72.5% | 2.1% | 908 |
| 2pm–3pm | 69.0% | 1.0% | 103 |
| 3pm–4pm | 62.0% | 2.7% | 984 |
| 4pm–5pm | 61.0% | 3.1% | 614 |
| 5pm–6pm | 63.4% | 2.0% | 817 |
| 6pm–7pm | 61.3% | 4.4% | 659 |
| 7pm–8pm | 62.1% | 5.1% | 1,180 |
| 8pm–9pm | 71.9% | 7.0% | 531 |
| 9pm–10pm | 71.0% | 3.1% | 32 |
| 10pm–11pm | 60.3% | 12.8% | 78 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LGA 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) | 75.1% | +0.2 pts | 0.5% | 210 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.3% | -4.6 pts | 2.5% | 518 |
| Summer peak (Jun 15 - Aug 15) | 66.0% | -8.9 pts | 6.0% | 1,883 |
| All other days | 74.9% | — | 2.5% | 9,293 |
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).