Which departure time was most reliable for MDW to DEN?
Among qualifying MDW-to-DEN departure window results, Early morning had the highest on-time rate: 87.5% of 506 flights. Night was lowest at 53.8% across 184 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 506 | 87.5% | 5.5% | 0.6% |
| Late morning | 451 | 81.8% | 9.3% | 0.9% |
| Afternoon | 685 | 67.9% | 19.4% | 1.6% |
| Evening | 509 | 58.2% | 30.1% | 1.4% |
| Night | 184 | 53.8% | 31.0% | 2.2% |
Which weekday was most reliable for MDW to DEN?
Among qualifying MDW-to-DEN weekday results, Wednesday had the highest on-time rate: 78.7% of 305 flights. Monday was lowest at 67.2% across 369 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 369 | 67.2% | 19.0% | 1.1% |
| Tuesday | 321 | 76.0% | 15.0% | 0.9% |
| Wednesday | 305 | 78.7% | 13.8% | 1.0% |
| Thursday | 351 | 67.2% | 20.2% | 1.4% |
| Friday | 369 | 70.7% | 20.1% | 1.1% |
| Saturday | 258 | 74.4% | 15.5% | 2.7% |
| Sunday | 362 | 69.3% | 18.8% | 0.8% |
Which airline was most reliable for MDW to DEN?
Among qualifying MDW-to-DEN airline results, Southwest Airlines had the highest on-time rate: 71.9% of 2,242 flights. Frontier Airlines was lowest at 63.4% across 93 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 2,242 | 71.9% | 17.4% | 1.2% |
| Frontier Airlines | 93 | 63.4% | 24.7% | 1.1% |
Which month was most reliable for MDW to DEN?
Among qualifying MDW-to-DEN month results, September 2025 had the highest on-time rate: 85.1% of 202 flights. December 2025 was lowest at 57.9% across 197 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 299 | 60.9% | 28.8% | 1.0% |
| August 2025 | 226 | 72.6% | 18.1% | 0.4% |
| September 2025 | 202 | 85.1% | 9.9% | 0.0% |
| October 2025 | 213 | 80.8% | 9.9% | 0.0% |
| November 2025 | 188 | 77.1% | 11.2% | 5.9% |
| December 2025 | 197 | 57.9% | 23.9% | 1.0% |
| January 2026 | 158 | 81.0% | 12.0% | 0.0% |
| February 2026 | 139 | 77.7% | 11.5% | 0.7% |
| March 2026 | 169 | 64.5% | 23.1% | 3.0% |
| April 2026 | 161 | 72.0% | 19.3% | 1.2% |
| May 2026 | 163 | 76.1% | 16.0% | 0.6% |
| June 2026 | 220 | 62.7% | 20.9% | 1.4% |
What drove MDW to DEN delay minutes?
Late aircraft was the largest recorded MDW-to-DEN delay category, accounting for 38.7% of 38,367 BTS-attributed delay minutes during July 2025–June 2026.
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