Which departure time was most reliable for IAH to PHL?
Among qualifying IAH-to-PHL departure window results, Early morning had the highest on-time rate: 84.8% of 704 flights. Late morning was lowest at 65.7% across 102 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 704 | 84.8% | 8.0% | 2.3% |
| Late morning | 102 | 65.7% | 26.5% | 2.0% |
| Afternoon | 657 | 75.5% | 14.2% | 2.3% |
| Evening | 369 | 72.9% | 19.5% | 1.4% |
Which weekday was most reliable for IAH to PHL?
Among qualifying IAH-to-PHL weekday results, Tuesday had the highest on-time rate: 86.1% of 237 flights. Sunday was lowest at 70.0% across 270 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 300 | 73.7% | 17.0% | 3.0% |
| Tuesday | 237 | 86.1% | 8.9% | 1.3% |
| Wednesday | 257 | 79.8% | 12.8% | 0.4% |
| Thursday | 279 | 80.3% | 10.8% | 1.4% |
| Friday | 285 | 79.3% | 13.3% | 1.8% |
| Saturday | 204 | 78.4% | 14.7% | 1.5% |
| Sunday | 270 | 70.0% | 16.7% | 4.8% |
Which airline was most reliable for IAH to PHL?
Among qualifying IAH-to-PHL airline results, United Airlines had the highest on-time rate: 82.2% of 891 flights. PSA Airlines was lowest at 68.5% across 92 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| United Airlines | 891 | 82.2% | 11.6% | 1.0% |
| American Airlines | 717 | 75.6% | 14.6% | 3.3% |
| PSA Airlines | 92 | 68.5% | 15.2% | 2.2% |
| Frontier Airlines | 70 | 71.4% | 21.4% | 1.4% |
| Spirit Airlines | 42 | 71.4% | 14.3% | 4.8% |
| Republic Airways | 20 | 60.0% | 25.0% | 0.0% |
Which month was most reliable for IAH to PHL?
Among qualifying IAH-to-PHL month results, February 2026 had the highest on-time rate: 87.4% of 127 flights. July 2025 was lowest at 61.2% across 152 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 152 | 61.2% | 28.9% | 3.9% |
| August 2025 | 143 | 71.3% | 18.9% | 3.5% |
| September 2025 | 137 | 86.9% | 8.0% | 0.0% |
| October 2025 | 161 | 77.6% | 11.2% | 0.0% |
| November 2025 | 150 | 82.0% | 10.7% | 1.3% |
| December 2025 | 157 | 84.1% | 8.9% | 1.9% |
| January 2026 | 145 | 80.7% | 7.6% | 6.9% |
| February 2026 | 127 | 87.4% | 5.5% | 3.9% |
| March 2026 | 147 | 76.9% | 13.6% | 2.0% |
| April 2026 | 159 | 86.8% | 6.9% | 0.6% |
| May 2026 | 167 | 80.8% | 13.8% | 0.0% |
| June 2026 | 187 | 64.7% | 24.6% | 1.6% |
What drove IAH to PHL delay minutes?
Airline was the largest recorded IAH-to-PHL delay category, accounting for 46.1% of 42,313 BTS-attributed delay minutes during July 2025–June 2026.
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