84% of flights from Louisville to Miami arrived on time over the past 12 months. That is better than the typical U.S. route. 7% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for SDF → MIA: when a flight was late, it was under 45 minutes late 52% of the time. About 1 in 20 flights landed an hour or more late, and 1 in 45 three hours or more; 1.7% were cancelled outright.
- On time or early84%
- 15–30 min late4.7%
- 30–60 min late4.2%
- 1–2 hours late1.7%
- 2–3 hours late1.0%
- 3+ hours late2.2%
- Diverted0.2%
- Cancelled1.7%
Share of all 407 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| American Airlines | 407 | 84% | 1.7% | −11 min | 4.9% | +127 min | American Airlines 90%, Envoy 8%, Republic Airways 3% |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at SDF). Delays build through the day as late planes knock on, so early flights usually do best.
By month
Each calendar month pooled over 2023–2026. Best: April (86%). Worst: February (68%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 59 | — | — |
| Tuesday | 53 | — | — |
| Wednesday | 52 | — | — |
| Thursday | 54 | — | — |
| Friday | 58 | — | — |
| Saturday | 73 | — | — |
| Sunday | 58 | — | — |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: weather 7
Month by month
Not enough months with data to draw a trend.
Flight numbers on this route
Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.
| Flight | Departs | Flights | On time | Cancelled | Typical arrival | Operated by |
|---|---|---|---|---|---|---|
| AA 1325 | 6:00 a.m. | 147 | 91% | 0.7% | −11 min | American Airlines |
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Apr 30, 2026 | 3 | 67% | 0 |
Questions
How often are flights from SDF to MIA on time?
84% of 407 scheduled flights from Louisville, KY to Miami, FL arrived within 15 minutes of schedule between September 2025 and August 2026. 1.7% were cancelled.
What month has the most delays from SDF to MIA?
February (68% on time). The best month is April (86%), over 2023–2026.
Related
- MIA → SDF (return)
- Louisville Muhammad Ali (SDF) delays by hour
- Flights into Miami (MIA)
- American Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.