Which departure time was most reliable for DEN to ORD?
Among qualifying DEN-to-ORD departure window results, Early morning had the highest on-time rate: 86.3% of 1,271 flights. Evening was lowest at 60.5% across 1,631 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 1,271 | 86.3% | 7.8% | 0.9% |
| Late morning | 1,246 | 76.5% | 14.2% | 0.7% |
| Afternoon | 1,929 | 62.8% | 23.2% | 0.9% |
| Evening | 1,631 | 60.5% | 27.5% | 1.6% |
| Night | 84 | 78.6% | 16.7% | 2.4% |
Which weekday was most reliable for DEN to ORD?
Among qualifying DEN-to-ORD weekday results, Tuesday had the highest on-time rate: 73.5% of 880 flights. Sunday was lowest at 65.3% across 905 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 893 | 68.6% | 19.5% | 1.7% |
| Tuesday | 880 | 73.5% | 16.9% | 0.5% |
| Wednesday | 859 | 72.9% | 17.8% | 0.8% |
| Thursday | 896 | 67.4% | 21.4% | 1.7% |
| Friday | 901 | 70.4% | 18.8% | 0.9% |
| Saturday | 827 | 72.4% | 18.1% | 1.0% |
| Sunday | 905 | 65.3% | 22.0% | 1.0% |
Which airline was most reliable for DEN to ORD?
Among qualifying DEN-to-ORD airline results, Envoy Air had the highest on-time rate: 72.8% of 125 flights. Southwest Airlines was lowest at 62.9% across 482 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| United Airlines | 3,756 | 70.6% | 18.2% | 0.7% |
| American Airlines | 1,469 | 71.2% | 19.9% | 2.0% |
| Southwest Airlines | 482 | 62.9% | 23.2% | 0.6% |
| Frontier Airlines | 329 | 67.8% | 23.1% | 1.2% |
| Envoy Air | 125 | 72.8% | 17.6% | 0.8% |
Which month was most reliable for DEN to ORD?
Among qualifying DEN-to-ORD month results, February 2026 had the highest on-time rate: 78.9% of 432 flights. July 2025 was lowest at 54.7% across 583 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 583 | 54.7% | 31.4% | 2.7% |
| August 2025 | 600 | 64.2% | 24.8% | 1.3% |
| September 2025 | 604 | 77.6% | 13.4% | 0.0% |
| October 2025 | 616 | 76.3% | 12.5% | 0.3% |
| November 2025 | 422 | 69.9% | 21.3% | 2.4% |
| December 2025 | 416 | 68.8% | 20.7% | 0.7% |
| January 2026 | 389 | 71.0% | 16.7% | 0.3% |
| February 2026 | 432 | 78.9% | 14.1% | 0.2% |
| March 2026 | 486 | 66.5% | 22.6% | 1.6% |
| April 2026 | 493 | 72.6% | 15.2% | 2.2% |
| May 2026 | 583 | 75.6% | 14.1% | 0.0% |
| June 2026 | 537 | 65.4% | 23.6% | 1.1% |
What drove DEN to ORD delay minutes?
Late aircraft was the largest recorded DEN-to-ORD delay category, accounting for 37.4% of 153,862 BTS-attributed delay minutes during July 2025–June 2026.
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