Airports › Louisville (SDF) › October 2025
Airport month · October 2025
Louisville Muhammad Ali International in October 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In October 2025, reporting carriers scheduled 2,089 domestic departures from Louisville Muhammad Ali International (SDF). 83.4% left less than 15 minutes late and 83.3% reached their destination on time; 0.6% were cancelled.
Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so SDF departures were 3.4 points above the national departure figure.
A year earlier, in October 2024, the airport had 2,179 departures with 89.9% leaving on time: a change of −6.5 points, with flights down 4%.
Flights arriving at SDF that month were on time 80.9% of the time (2,088 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 32% and national aviation system 27%.
- On time 83.3%
- Arrived 15+ minutes late 15.9%
- Cancelled 0.6%
- Diverted 0.2%
October 2025 against a year earlier, the airport's year and the nation
| Measure | Oct 2025 | Oct 2024 | SDF, 12 months to Jul 2026 | All reported flights, Oct 2025 |
|---|---|---|---|---|
| Departed on time | 83.4% | 89.9% | 80.0% | 80.0% |
| Arrived on time | 83.3% | 89.0% | 79.7% | 79.1% |
| Cancelled | 0.6% | 0.7% | 2.2% | 0.5% |
| Average departure delay (late minutes only) | 11.3 min | 8.3 min | 15.9 min | 13.9 min |
| Scheduled departures a day | 70 | 73 | 63 | 20,195 |
| Scheduled departures | 2,089 | 2,179 | 23,144 | 605,844 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 477 | 23% | 82.0% | 2.6 min | 0.2% |
| YX Republic Airline | 436 | 21% | 85.1% | 2.8 min | 0.9% |
| DL Delta Air Lines | 230 | 11% | 93.5% | -11.8 min | 0.0% |
| AA American Airlines | 220 | 11% | 78.6% | 2.4 min | 1.8% |
| OH PSA Airlines | 203 | 10% | 85.7% | 0.5 min | 0.0% |
| OO SkyWest Airlines | 166 | 8% | 84.9% | -1.0 min | 0.0% |
| MQ Envoy Air | 140 | 7% | 72.1% | 12.9 min | 0.7% |
| NK Spirit Airlines | 79 | 4% | 81.0% | 5.9 min | 2.5% |
| G4 Allegiant Air | 76 | 4% | 68.4% | 22.7 min | 0.0% |
| UA United Airlines | 62 | 3% | 95.2% | -9.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SDF–ORD | Louisville to Chicago | 256 | 83.2% | 2.7 min | 0.0% |
| SDF–ATL | Louisville to Atlanta | 230 | 93.5% | -11.8 min | 0.0% |
| SDF–DFW | Louisville to Dallas/Fort Worth | 196 | 76.0% | 1.5 min | 2.6% |
| SDF–CLT | Louisville to Charlotte | 141 | 85.1% | -0.9 min | 0.0% |
| SDF–DTW | Louisville to Detroit | 105 | 94.3% | -2.4 min | 0.0% |
| SDF–BWI | Louisville to Baltimore | 95 | 86.3% | -1.7 min | 0.0% |
| SDF–MCO | Louisville to Orlando | 95 | 84.2% | -0.6 min | 1.1% |
| SDF–DCA | Louisville to Washington | 93 | 87.1% | -1.5 min | 0.0% |
| SDF–DEN | Louisville to Denver | 93 | 84.9% | 0.2 min | 0.0% |
| SDF–EWR | Louisville to Newark | 93 | 89.2% | 0.0 min | 0.0% |
| SDF–LGA | Louisville to New York | 92 | 81.5% | 5.5 min | 3.3% |
| SDF–MDW | Louisville to Chicago | 87 | 83.9% | 0.2 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SDF on time in October 2025?
83.4% of 2,089 scheduled domestic departures left less than 15 minutes late, and 83.3% reached their destination on time. The national figures that month were 80.0% and 79.1%.
How does that compare with a year earlier?
In October 2024, 89.9% of 2,179 departures left on time and 0.7% were cancelled, against 83.4% and 0.6% in October 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SDF · methodology · corrections.