Airports › Louisville (SDF) › June 2025
Airport month · June 2025
Louisville Muhammad Ali International in June 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 June 2025, reporting carriers scheduled 2,114 domestic departures from Louisville Muhammad Ali International (SDF). 74.7% left less than 15 minutes late and 74.1% reached their destination on time; 2.4% were cancelled.
Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so SDF departures were 3.3 points above the national departure figure.
A year earlier, in June 2024, the airport had 2,156 departures with 81.2% leaving on time: a change of −6.5 points, with flights down 2%.
Flights arriving at SDF that month were on time 66.7% of the time (2,116 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 32% and national aviation system 21%.
- On time 74.1%
- Arrived 15+ minutes late 23.2%
- Cancelled 2.4%
- Diverted 0.3%
June 2025 against a year earlier, the airport's year and the nation
| Measure | Jun 2025 | Jun 2024 | SDF, 12 months to Jul 2026 | All reported flights, Jun 2025 |
|---|---|---|---|---|
| Departed on time | 74.7% | 81.2% | 80.0% | 71.4% |
| Arrived on time | 74.1% | 79.7% | 79.7% | 70.3% |
| Cancelled | 2.4% | 1.1% | 2.2% | 1.6% |
| Average departure delay (late minutes only) | 22.0 min | 16.6 min | 15.9 min | 22.1 min |
| Scheduled departures a day | 71 | 72 | 63 | 20,386 |
| Scheduled departures | 2,114 | 2,156 | 23,144 | 611,575 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| YX Republic Airline | 464 | 22% | 82.1% | 3.4 min | 0.6% |
| WN Southwest Airlines | 441 | 21% | 79.6% | 6.4 min | 0.9% |
| OO SkyWest Airlines | 226 | 11% | 73.5% | 13.2 min | 1.8% |
| DL Delta Air Lines | 225 | 11% | 76.9% | 8.0 min | 3.6% |
| OH PSA Airlines | 195 | 9% | 46.7% | 57.6 min | 7.7% |
| AA American Airlines | 162 | 8% | 75.9% | 11.6 min | 6.2% |
| MQ Envoy Air | 132 | 6% | 71.2% | 10.2 min | 0.0% |
| NK Spirit Airlines | 122 | 6% | 72.1% | 14.8 min | 3.3% |
| G4 Allegiant Air | 87 | 4% | 62.1% | 25.7 min | 0.0% |
| UA United Airlines | 60 | 3% | 75.0% | 9.1 min | 3.3% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SDF–ATL | Louisville to Atlanta | 241 | 76.3% | 9.1 min | 3.3% |
| SDF–ORD | Louisville to Chicago | 224 | 79.0% | 5.2 min | 0.0% |
| SDF–DFW | Louisville to Dallas/Fort Worth | 190 | 58.4% | 28.9 min | 3.7% |
| SDF–CLT | Louisville to Charlotte | 140 | 65.0% | 31.0 min | 4.3% |
| SDF–DTW | Louisville to Detroit | 119 | 82.4% | 5.9 min | 0.8% |
| SDF–LGA | Louisville to New York | 115 | 80.9% | 0.7 min | 2.6% |
| SDF–MDW | Louisville to Chicago | 102 | 90.2% | -1.8 min | 0.0% |
| SDF–DEN | Louisville to Denver | 94 | 71.3% | 9.9 min | 2.1% |
| SDF–MSP | Louisville to Minneapolis | 94 | 83.0% | 9.1 min | 0.0% |
| SDF–DCA | Louisville to Washington | 86 | 60.5% | 36.1 min | 11.6% |
| SDF–MCO | Louisville to Orlando | 85 | 74.1% | 20.1 min | 1.2% |
| SDF–BWI | Louisville to Baltimore | 82 | 78.0% | 14.4 min | 3.7% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SDF on time in June 2025?
74.7% of 2,114 scheduled domestic departures left less than 15 minutes late, and 74.1% reached their destination on time. The national figures that month were 71.4% and 70.3%.
How does that compare with a year earlier?
In June 2024, 81.2% of 2,156 departures left on time and 1.1% were cancelled, against 74.7% and 2.4% in June 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 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.