Which departure time was most reliable for DAL to PHL?
Among qualifying DAL-to-PHL departure window results, Late morning had the highest on-time rate: 81.1% of 53 flights. Afternoon was lowest at 60.2% across 166 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 105 | 80.0% | 10.5% | 1.0% |
| Late morning | 53 | 81.1% | 5.7% | 1.9% |
| Afternoon | 166 | 60.2% | 24.1% | 0.6% |
Which weekday was most reliable for DAL to PHL?
Among qualifying DAL-to-PHL weekday results, Wednesday had the highest on-time rate: 83.7% of 43 flights. Monday was lowest at 61.2% across 49 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 49 | 61.2% | 22.4% | 0.0% |
| Tuesday | 45 | 80.0% | 13.3% | 0.0% |
| Wednesday | 43 | 83.7% | 2.3% | 0.0% |
| Thursday | 49 | 69.4% | 18.4% | 0.0% |
| Friday | 49 | 63.3% | 18.4% | 0.0% |
| Saturday | 39 | 71.8% | 15.4% | 5.1% |
| Sunday | 50 | 64.0% | 24.0% | 2.0% |
Which airline was most reliable for DAL to PHL?
Only Southwest Airlines met the DAL-to-PHL airline threshold: 70.1% of 324 scheduled flights arrived on time during July 2025–June 2026.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 324 | 70.1% | 16.7% | 0.9% |
Which month was most reliable for DAL to PHL?
Among qualifying DAL-to-PHL month results, December 2025 had the highest on-time rate: 87.1% of 31 flights. July 2025 was lowest at 45.2% across 31 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 31 | 45.2% | 45.2% | 0.0% |
| August 2025 | 27 | 66.7% | 14.8% | 0.0% |
| September 2025 | 26 | 69.2% | 19.2% | 0.0% |
| October 2025 | 31 | 67.7% | 16.1% | 0.0% |
| November 2025 | 30 | 56.7% | 20.0% | 3.3% |
| December 2025 | 31 | 87.1% | 9.7% | 0.0% |
| February 2026 | 18 | 50.0% | 16.7% | 0.0% |
| March 2026 | 29 | 65.5% | 13.8% | 0.0% |
| April 2026 | 30 | 86.7% | 3.3% | 3.3% |
| May 2026 | 31 | 87.1% | 6.5% | 0.0% |
| June 2026 | 30 | 80.0% | 16.7% | 0.0% |
What drove DAL to PHL delay minutes?
Airline was the largest recorded DAL-to-PHL delay category, accounting for 37.5% of 4,901 BTS-attributed delay minutes during July 2025–June 2026.
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