Which departure time was most reliable for ATL to SAT?
Among qualifying ATL-to-SAT departure window results, Early morning had the highest on-time rate: 86.8% of 333 flights. Evening was lowest at 73.2% across 519 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 333 | 86.8% | 5.1% | 3.9% |
| Late morning | 534 | 85.6% | 7.3% | 1.3% |
| Afternoon | 1,241 | 79.0% | 11.7% | 1.0% |
| Evening | 519 | 73.2% | 18.1% | 1.2% |
| Night | 400 | 78.0% | 14.0% | 1.5% |
Which weekday was most reliable for ATL to SAT?
Among qualifying ATL-to-SAT weekday results, Wednesday had the highest on-time rate: 88.0% of 400 flights. Sunday was lowest at 73.3% across 445 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 480 | 76.2% | 14.8% | 1.2% |
| Tuesday | 409 | 83.1% | 9.8% | 0.5% |
| Wednesday | 400 | 88.0% | 6.0% | 0.2% |
| Thursday | 440 | 80.5% | 9.8% | 0.7% |
| Friday | 473 | 79.3% | 12.1% | 1.9% |
| Saturday | 380 | 80.3% | 11.1% | 2.9% |
| Sunday | 445 | 73.3% | 16.6% | 2.9% |
Which airline was most reliable for ATL to SAT?
Among qualifying ATL-to-SAT airline results, Southwest Airlines had the highest on-time rate: 81.1% of 318 flights. Frontier Airlines was lowest at 71.4% across 91 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,610 | 80.0% | 11.5% | 1.7% |
| Southwest Airlines | 318 | 81.1% | 10.1% | 0.3% |
| Frontier Airlines | 91 | 71.4% | 22.0% | 0.0% |
| Spirit Airlines | 8 | 87.5% | 0.0% | 0.0% |
Which month was most reliable for ATL to SAT?
Among qualifying ATL-to-SAT month results, September 2025 had the highest on-time rate: 86.2% of 260 flights. July 2025 was lowest at 68.2% across 277 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 277 | 68.2% | 20.9% | 0.4% |
| August 2025 | 270 | 81.5% | 12.2% | 0.7% |
| September 2025 | 260 | 86.2% | 7.3% | 0.0% |
| October 2025 | 275 | 85.5% | 8.0% | 0.0% |
| November 2025 | 250 | 79.6% | 13.2% | 1.6% |
| December 2025 | 250 | 76.8% | 13.6% | 2.4% |
| January 2026 | 217 | 77.4% | 12.0% | 3.2% |
| February 2026 | 221 | 85.5% | 8.1% | 1.4% |
| March 2026 | 256 | 80.5% | 11.3% | 1.2% |
| April 2026 | 248 | 84.7% | 7.7% | 0.8% |
| May 2026 | 259 | 71.4% | 13.9% | 4.2% |
| June 2026 | 244 | 82.4% | 9.8% | 2.5% |
What drove ATL to SAT delay minutes?
Airline was the largest recorded ATL-to-SAT delay category, accounting for 44.4% of 30,617 BTS-attributed delay minutes during July 2025–June 2026.
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