Which departure time was most reliable for IAH to SAT?
Among qualifying IAH-to-SAT departure window results, Early morning had the highest on-time rate: 94.7% of 337 flights. Evening was lowest at 73.8% across 728 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 337 | 94.7% | 1.8% | 0.9% |
| Late morning | 360 | 87.5% | 5.0% | 0.0% |
| Afternoon | 728 | 82.4% | 11.3% | 0.1% |
| Evening | 728 | 73.8% | 16.1% | 0.8% |
| Night | 258 | 79.8% | 11.2% | 0.8% |
Which weekday was most reliable for IAH to SAT?
Among qualifying IAH-to-SAT weekday results, Tuesday had the highest on-time rate: 86.6% of 359 flights. Monday was lowest at 78.3% across 351 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 351 | 78.3% | 12.3% | 1.4% |
| Tuesday | 359 | 86.6% | 7.8% | 0.0% |
| Wednesday | 344 | 83.4% | 9.6% | 0.6% |
| Thursday | 337 | 81.3% | 9.2% | 0.0% |
| Friday | 342 | 79.5% | 11.7% | 0.6% |
| Saturday | 336 | 84.2% | 10.1% | 0.3% |
| Sunday | 342 | 80.4% | 12.6% | 0.6% |
Which airline was most reliable for IAH to SAT?
Among qualifying IAH-to-SAT airline results, United Airlines had the highest on-time rate: 82.2% of 2,326 flights. SkyWest Airlines was lowest at 76.5% across 85 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,326 | 82.2% | 10.2% | 0.5% |
| SkyWest Airlines | 85 | 76.5% | 16.5% | 1.2% |
Which month was most reliable for IAH to SAT?
Among qualifying IAH-to-SAT month results, February 2026 had the highest on-time rate: 91.1% of 168 flights. June 2026 was lowest at 69.0% across 171 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 185 | 70.8% | 20.0% | 1.1% |
| August 2025 | 208 | 78.4% | 13.5% | 0.5% |
| September 2025 | 229 | 87.3% | 5.7% | 0.0% |
| October 2025 | 213 | 85.4% | 6.6% | 0.0% |
| November 2025 | 207 | 82.6% | 9.7% | 1.0% |
| December 2025 | 217 | 83.9% | 8.3% | 0.0% |
| January 2026 | 179 | 89.4% | 6.1% | 1.1% |
| February 2026 | 168 | 91.1% | 3.0% | 0.0% |
| March 2026 | 234 | 80.3% | 12.4% | 2.1% |
| April 2026 | 215 | 82.8% | 8.8% | 0.0% |
| May 2026 | 185 | 81.6% | 13.5% | 0.0% |
| June 2026 | 171 | 69.0% | 19.3% | 0.0% |
What drove IAH to SAT delay minutes?
Late aircraft was the largest recorded IAH-to-SAT delay category, accounting for 44.2% of 26,466 BTS-attributed delay minutes during July 2025–June 2026.
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