Which departure time was most reliable for SDF to ORD?
Among qualifying SDF-to-ORD departure window results, Late morning had the highest on-time rate: 85.4% of 622 flights. Evening was lowest at 61.0% across 577 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 1,033 | 83.3% | 8.8% | 1.9% |
| Late morning | 622 | 85.4% | 8.8% | 1.4% |
| Afternoon | 574 | 71.1% | 20.0% | 2.6% |
| Evening | 577 | 61.0% | 21.5% | 5.9% |
Which weekday was most reliable for SDF to ORD?
Among qualifying SDF-to-ORD weekday results, Thursday had the highest on-time rate: 82.4% of 414 flights. Friday was lowest at 72.8% across 405 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 419 | 76.4% | 13.4% | 3.8% |
| Tuesday | 396 | 77.5% | 13.6% | 2.8% |
| Wednesday | 401 | 77.1% | 12.2% | 3.7% |
| Thursday | 414 | 82.4% | 6.5% | 2.7% |
| Friday | 405 | 72.8% | 16.5% | 2.0% |
| Saturday | 367 | 75.5% | 16.3% | 1.9% |
| Sunday | 405 | 74.8% | 17.8% | 2.7% |
Which airline was most reliable for SDF to ORD?
Among qualifying SDF-to-ORD airline results, Republic Airways had the highest on-time rate: 80.2% of 1,736 flights. SkyWest Airlines was lowest at 67.9% across 645 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Republic Airways | 1,736 | 80.2% | 10.7% | 2.7% |
| SkyWest Airlines | 645 | 67.9% | 20.2% | 3.9% |
| Envoy Air | 416 | 76.0% | 15.9% | 1.4% |
| United Airlines | 6 | 50.0% | 50.0% | 0.0% |
| American Airlines | 3 | 66.7% | 33.3% | 0.0% |
| PSA Airlines | 1 | 0.0% | 0.0% | 100.0% |
Which month was most reliable for SDF to ORD?
Among qualifying SDF-to-ORD month results, September 2025 had the highest on-time rate: 89.2% of 222 flights. July 2025 was lowest at 69.1% across 259 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 259 | 69.1% | 20.5% | 2.7% |
| August 2025 | 242 | 79.3% | 9.9% | 3.3% |
| September 2025 | 222 | 89.2% | 6.8% | 0.5% |
| October 2025 | 256 | 83.2% | 10.2% | 0.0% |
| November 2025 | 194 | 70.6% | 14.9% | 6.2% |
| December 2025 | 179 | 74.3% | 17.9% | 2.2% |
| January 2026 | 182 | 72.5% | 16.5% | 3.8% |
| February 2026 | 198 | 74.7% | 14.6% | 0.0% |
| March 2026 | 221 | 72.4% | 13.1% | 5.0% |
| April 2026 | 311 | 73.3% | 15.4% | 3.9% |
| May 2026 | 312 | 81.1% | 11.5% | 2.2% |
| June 2026 | 231 | 77.5% | 14.7% | 4.3% |
What drove SDF to ORD delay minutes?
National airspace was the largest recorded SDF-to-ORD delay category, accounting for 39.1% of 44,533 BTS-attributed delay minutes during July 2025–June 2026.
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