Airports › Louisville (SDF) › January 2026
Airport month · January 2026
Louisville Muhammad Ali International in January 2026
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 January 2026, reporting carriers scheduled 1,578 domestic departures from Louisville Muhammad Ali International (SDF). 78.1% left less than 15 minutes late and 79.3% reached their destination on time; 7.0% were cancelled.
Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so SDF departures were 2.5 points above the national departure figure.
A year earlier, in January 2025, the airport had 1,701 departures with 78.2% leaving on time: a change of −0.1 points, with flights down 7%.
Flights arriving at SDF that month were on time 73.7% of the time (1,577 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 31% and national aviation system 18%.
- On time 79.3%
- Arrived 15+ minutes late 13.6%
- Cancelled 7.0%
- Diverted 0.1%
January 2026 against a year earlier, the airport's year and the nation
| Measure | Jan 2026 | Jan 2025 | SDF, 12 months to Jul 2026 | All reported flights, Jan 2026 |
|---|---|---|---|---|
| Departed on time | 78.1% | 78.2% | 80.0% | 75.6% |
| Arrived on time | 79.3% | 72.0% | 79.7% | 75.3% |
| Cancelled | 7.0% | 6.3% | 2.2% | 4.7% |
| Average departure delay (late minutes only) | 15.3 min | 20.3 min | 15.9 min | 16.7 min |
| Scheduled departures a day | 53 | 57 | 63 | 18,133 |
| Scheduled departures | 1,578 | 1,701 | 23,144 | 544,003 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| YX Republic Airline | 446 | 28% | 78.9% | -2.9 min | 5.6% |
| WN Southwest Airlines | 385 | 24% | 84.9% | -7.5 min | 6.8% |
| AA American Airlines | 213 | 13% | 77.0% | 12.3 min | 11.3% |
| DL Delta Air Lines | 201 | 13% | 82.6% | 0.0 min | 3.5% |
| OH PSA Airlines | 101 | 6% | 71.3% | 5.4 min | 11.9% |
| OO SkyWest Airlines | 75 | 5% | 65.3% | 22.3 min | 5.3% |
| UA United Airlines | 62 | 4% | 80.6% | 5.9 min | 4.8% |
| G4 Allegiant Air | 48 | 3% | 72.9% | 6.5 min | 4.2% |
| NK Spirit Airlines | 28 | 2% | 75.0% | -13.0 min | 17.9% |
| MQ Envoy Air | 19 | 1% | 78.9% | -0.6 min | 10.5% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SDF–ATL | Louisville to Atlanta | 191 | 83.2% | -1.7 min | 3.7% |
| SDF–ORD | Louisville to Chicago | 182 | 72.5% | 7.3 min | 3.8% |
| SDF–CLT | Louisville to Charlotte | 129 | 80.6% | -6.1 min | 10.9% |
| SDF–DFW | Louisville to Dallas/Fort Worth | 111 | 74.8% | 31.3 min | 9.9% |
| SDF–DEN | Louisville to Denver | 93 | 82.8% | 0.2 min | 6.5% |
| SDF–EWR | Louisville to Newark | 86 | 81.4% | -7.5 min | 8.1% |
| SDF–DCA | Louisville to Washington | 83 | 69.9% | 6.8 min | 12.0% |
| SDF–DTW | Louisville to Detroit | 81 | 70.4% | 15.8 min | 3.7% |
| SDF–MCO | Louisville to Orlando | 80 | 82.5% | -7.4 min | 6.3% |
| SDF–BWI | Louisville to Baltimore | 63 | 88.9% | -1.9 min | 6.3% |
| SDF–MDW | Louisville to Chicago | 63 | 81.0% | 0.9 min | 4.8% |
| SDF–LGA | Louisville to New York | 57 | 78.9% | -7.4 min | 7.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SDF on time in January 2026?
78.1% of 1,578 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 75.6% and 75.3%.
How does that compare with a year earlier?
In January 2025, 78.2% of 1,701 departures left on time and 6.3% were cancelled, against 78.1% and 7.0% in January 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2026; 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.