SDF · Louisville Muhammad Ali International Airport
Louisville, KY. All airports.
Share of flights 15+ min late, by month
departures
arrivals
usual for the month (departures)
Jan 2015 → Jul 2026; gridlines 10/20/30/40%
Recent months — departures
| Month | Flights | Late 15+ | vs usual | Cancelled | Avg min | Main cause |
|---|---|---|---|---|---|---|
| Jul 2026 | 2,015 | 21.8% | -0.6 | 2.6% | 18 | Late aircraft |
| Jun 2026 | 2,012 | 23.0% | +0.6 | 2.1% | 20 | Late aircraft |
| May 2026 | 2,304 | 16.9% | -2.9 | 0.9% | 13 | Airline |
| Apr 2026 | 2,136 | 15.9% | +0.6 | 1.1% | 15 | Airline |
| Mar 2026 | 2,009 | 23.0% | +7.3 | 3.8% | 23 | Airline |
| Feb 2026 | 1,594 | 15.8% | +1.3 | 2.6% | 13 | Airline |
| Jan 2026 | 1,578 | 16.0% | -1.1 | 7.0% | 15 | Airline |
| Dec 2025 | 1,686 | 23.2% | +5.9 | 1.8% | 20 | Late aircraft |
| Nov 2025 | 1,731 | 18.1% | +6.6 | 3.8% | 16 | Air traffic |
| Oct 2025 | 2,089 | 16.1% | +3.3 | 0.6% | 11 | Late aircraft |
| Sep 2025 | 1,929 | 12.8% | +0.1 | 0.7% | 12 | Airline |
| Aug 2025 | 2,061 | 16.1% | -1.2 | 1.4% | 15 | Airline |
| Jul 2025 | 2,176 | 22.9% | +1.1 | 2.6% | 20 | Late aircraft |
| Jun 2025 | 2,114 | 23.5% | +1.1 | 2.4% | 22 | Late aircraft |
| May 2025 | 2,125 | 21.1% | +4.0 | 1.2% | 17 | Late aircraft |
| Apr 2025 | 1,948 | 17.2% | +1.9 | 1.4% | 14 | Late aircraft |
| Mar 2025 | 1,905 | 14.2% | -1.5 | 1.2% | 11 | Late aircraft |
| Feb 2025 | 1,574 | 16.1% | +1.6 | 1.8% | 16 | Airline |
| Jan 2025 | 1,701 | 16.5% | -0.6 | 6.3% | 20 | Airline |
| Dec 2024 | 1,811 | 16.6% | -0.7 | 0.4% | 14 | Airline |
| Nov 2024 | 1,904 | 10.8% | -2.0 | 0.1% | 9 | Airline |
| Oct 2024 | 2,179 | 9.4% | -4.5 | 0.7% | 8 | Airline |
| Sep 2024 | 2,025 | 13.1% | +0.3 | 0.4% | 11 | Airline |
| Aug 2024 | 2,057 | 17.3% | -0.3 | 2.3% | 17 | Airline |
Airlines here, Apr 2026 (departures)
| Airline | Flights | Late | Canc. |
|---|---|---|---|
| Delta | 244 | 9.2% | 1.6% |
| Republic | 497 | 9.9% | 2.0% |
| American | 255 | 16.1% | 0.4% |
| United | 68 | 16.4% | 1.5% |
| Southwest | 475 | 18.1% | 0.2% |
| SkyWest | 271 | 19.1% | 1.5% |
| PSA | 168 | 20.5% | 1.2% |
| Envoy | 82 | 20.7% | 0.0% |
| Allegiant | 55 | 32.7% | 0.0% |
Airlines with 30+ departures that month.
Worst days on record
| Date | Flights | Late | Canc. |
|---|---|---|---|
| 2026-01-25 | 54 | 88% | 85% |
| 2022-02-03 | 69 | 50% | 94% |
| 2025-01-06 | 56 | 87% | 59% |
| 2022-12-23 | 62 | 77% | 24% |
| 2024-07-19 | 76 | 78% | 14% |
| 2023-05-07 | 119 | 77% | 0% |
| 2020-04-06 | 57 | 30% | 60% |
| 2018-01-12 | 55 | 57% | 27% |
| 2026-03-16 | 67 | 60% | 18% |
| 2025-01-05 | 59 | 20% | 58% |
| 2026-01-26 | 56 | 42% | 41% |
| 2025-02-16 | 55 | 59% | 16% |
Departures; ranked by share late or cancelled.
FAA programs, last 90 days
None recorded.