Which departure time was most reliable for IAD to DTW?
Among qualifying IAD-to-DTW departure window results, Late morning had the highest on-time rate: 89.3% of 159 flights. Evening was lowest at 67.5% across 453 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 291 | 83.2% | 11.7% | 1.4% |
| Late morning | 159 | 89.3% | 8.2% | 0.0% |
| Afternoon | 115 | 70.4% | 20.9% | 1.7% |
| Evening | 453 | 67.5% | 23.2% | 1.8% |
| Night | 78 | 70.5% | 15.4% | 3.8% |
Which weekday was most reliable for IAD to DTW?
Among qualifying IAD-to-DTW weekday results, Thursday had the highest on-time rate: 83.1% of 160 flights. Monday was lowest at 70.6% across 153 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 153 | 70.6% | 19.0% | 2.0% |
| Tuesday | 147 | 73.5% | 23.1% | 0.7% |
| Wednesday | 153 | 73.9% | 19.0% | 0.7% |
| Thursday | 160 | 83.1% | 11.2% | 1.9% |
| Friday | 165 | 74.5% | 17.0% | 1.2% |
| Saturday | 159 | 79.2% | 15.7% | 0.0% |
| Sunday | 159 | 72.3% | 15.7% | 4.4% |
Which airline was most reliable for IAD to DTW?
Among qualifying IAD-to-DTW airline results, Delta Air Lines had the highest on-time rate: 79.8% of 94 flights. SkyWest Airlines was lowest at 74.4% across 754 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| SkyWest Airlines | 754 | 74.4% | 18.7% | 1.3% |
| Republic Airways | 209 | 76.1% | 13.4% | 2.4% |
| Delta Air Lines | 94 | 79.8% | 14.9% | 2.1% |
| United Airlines | 39 | 79.5% | 12.8% | 0.0% |
Which month was most reliable for IAD to DTW?
Among qualifying IAD-to-DTW month results, October 2025 had the highest on-time rate: 93.3% of 89 flights. December 2025 was lowest at 55.7% across 61 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 86 | 60.5% | 29.1% | 4.7% |
| August 2025 | 82 | 76.8% | 17.1% | 0.0% |
| September 2025 | 78 | 91.0% | 6.4% | 0.0% |
| October 2025 | 89 | 93.3% | 3.4% | 0.0% |
| November 2025 | 36 | 69.4% | 19.4% | 0.0% |
| December 2025 | 61 | 55.7% | 34.4% | 0.0% |
| January 2026 | 84 | 58.3% | 27.4% | 4.8% |
| February 2026 | 78 | 65.4% | 26.9% | 1.3% |
| March 2026 | 128 | 64.1% | 21.1% | 3.1% |
| April 2026 | 110 | 85.5% | 10.0% | 0.0% |
| May 2026 | 144 | 86.1% | 10.4% | 1.4% |
| June 2026 | 120 | 81.7% | 13.3% | 1.7% |
What drove IAD to DTW delay minutes?
Airline was the largest recorded IAD-to-DTW delay category, accounting for 71.0% of 26,864 BTS-attributed delay minutes during July 2025–June 2026.
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