Best Time to Fly SDF to MIA: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Miami International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.4% of Louisville (SDF) to Miami (MIA) flights arrived on time (429 scheduled flights). That is 4.8 points above the national average of 77.6%.
Among 2 airlines, American Airlines led with 83.7% on time and Envoy Air was last with 77.8%.
Over 24 months, Wednesday was the most reliable day (89% on time) and August the worst month (69%).
The cancellation rate was 1.6% (US average 1.8%).
SDF 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% | 153 min | 1.6% | 368 |
| Envoy Air | 77.8% | 48 min | 2.2% | 46 |
| Republic Airways | Limited data | 15 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to MIA
On-time arrival % by scheduled departure hour (local time), 834 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 86.7% | 1.6% | 122 |
| 6am–7am | 83.6% | 1.8% | 608 |
| 8am–9am | Limited data | 2 | |
| 12pm–1pm | 65.6% | 3.0% | 33 |
| 2pm–3pm | Limited data | 1 | |
| 3pm–4pm | Limited data | 4 | |
| 4pm–5pm | Limited data | 5 | |
| 5pm–6pm | 71.4% | 0.0% | 49 |
| 6pm–7pm | Limited data | 10 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SDF 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) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -3.5 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 77.1% | -6.4 pts | 2.0% | 148 |
| All other days | 83.5% | — | 1.7% | 642 |
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).