Route
MIA → SDF
Miami International Airport Louisville Muhammad Ali International Airport
910 miles
Return route SDF → MIA →
How punctual is this route?
- On-time arrivals
- 64.2%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 82 min
- Flights arriving 15+ minutes late
- Flights tracked
- 408
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 16%
- Extreme weather 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.0% | 32 |
| October 2025 | 51.6% | 31 |
| November 2025 | 66.7% | 30 |
| December 2025 | 67.7% | 31 |
| January 2026 | 83.8% | 41 |
| February 2026 | 81.8% | 33 |
| March 2026 | 60.0% | 31 |
| April 2026 | 73.5% | 34 |
| May 2026 | 66.7% | 39 |
| June 2026 | 58.8% | 34 |
| July 2026 | 33.3% | 36 |
| August 2026 | 51.4% | 36 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| American Airlines | 366 | 62.3% | 1.4% | 77 min |
| Envoy Air | 31 | 86.7% | 3.2% | 37 min |
| Republic Airways | 11 | 63.6% | 0.0% | 285 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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