Best Time to Fly MIA to SDF: On-Time Stats by Hour & Airline
Miami International → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
430 flights were scheduled from Miami (MIA) to Louisville (SDF) in the last 12 months, and 65.2% of those that flew arrived on time, 12.4 points below the US average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 86.7%, while American Airlines trailed at 62.2%.
January has been the best month (87% on time) and Sunday the weakest day of the week (65%).
1.2% of flights were cancelled, versus 1.8% nationally.
MIA to SDF 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 |
|---|---|---|---|---|
| Envoy Air | 86.7% | 63 min | 2.2% | 46 |
| American Airlines | 62.2% | 73 min | 1.1% | 369 |
| Republic Airways | Limited data | 15 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to SDF
On-time arrival % by scheduled departure hour (local time), 833 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 1 | |
| 8am–9am | Limited data | 18 | |
| 9am–10am | Limited data | 15 | |
| 12pm–1pm | Limited data | 9 | |
| 2pm–3pm | 84.0% | 0.0% | 50 |
| 3pm–4pm | Limited data | 10 | |
| 7pm–8pm | Limited data | 6 | |
| 9pm–10pm | 67.7% | 1.4% | 717 |
| 10pm–11pm | Limited data | 7 | |
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 SDF
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) | 66.7% | -6.5 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 53.4% | -19.8 pts | 1.4% | 148 |
| All other days | 73.2% | — | 1.4% | 641 |
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).