Which departure time was most reliable for SFO to ATL?
Among qualifying SFO-to-ATL departure window results, Early morning had the highest on-time rate: 90.2% of 917 flights. Night was lowest at 72.2% across 1,310 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 917 | 90.2% | 5.6% | 0.7% |
| Late morning | 498 | 86.3% | 8.2% | 0.2% |
| Afternoon | 625 | 80.3% | 11.4% | 0.3% |
| Night | 1,310 | 72.2% | 16.8% | 1.4% |
Which weekday was most reliable for SFO to ATL?
Among qualifying SFO-to-ATL weekday results, Wednesday had the highest on-time rate: 83.9% of 446 flights. Friday was lowest at 77.0% across 505 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 514 | 82.3% | 9.5% | 0.8% |
| Tuesday | 435 | 83.7% | 8.7% | 0.9% |
| Wednesday | 446 | 83.9% | 9.6% | 0.2% |
| Thursday | 506 | 79.1% | 13.8% | 0.4% |
| Friday | 505 | 77.0% | 14.9% | 0.8% |
| Saturday | 434 | 82.0% | 9.2% | 0.9% |
| Sunday | 510 | 78.2% | 13.3% | 1.6% |
Which airline was most reliable for SFO to ATL?
Among qualifying SFO-to-ATL airline results, United Airlines had the highest on-time rate: 86.2% of 637 flights. Frontier Airlines was lowest at 57.5% across 306 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,407 | 82.3% | 10.3% | 0.7% |
| United Airlines | 637 | 86.2% | 8.2% | 0.2% |
| Frontier Airlines | 306 | 57.5% | 27.5% | 3.3% |
Which month was most reliable for SFO to ATL?
Among qualifying SFO-to-ATL month results, February 2026 had the highest on-time rate: 88.6% of 219 flights. May 2026 was lowest at 73.0% across 285 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 319 | 75.2% | 14.1% | 0.6% |
| August 2025 | 304 | 79.3% | 13.8% | 0.3% |
| September 2025 | 277 | 85.9% | 5.1% | 0.0% |
| October 2025 | 303 | 87.5% | 6.6% | 0.0% |
| November 2025 | 286 | 81.5% | 12.2% | 1.0% |
| December 2025 | 271 | 78.6% | 12.9% | 2.2% |
| January 2026 | 217 | 84.8% | 9.7% | 1.8% |
| February 2026 | 219 | 88.6% | 6.8% | 0.0% |
| March 2026 | 281 | 82.9% | 8.9% | 2.8% |
| April 2026 | 284 | 78.2% | 14.1% | 0.0% |
| May 2026 | 285 | 73.0% | 15.8% | 0.4% |
| June 2026 | 304 | 77.0% | 15.1% | 0.7% |
What drove SFO to ATL delay minutes?
Late aircraft was the largest recorded SFO-to-ATL delay category, accounting for 46.2% of 40,863 BTS-attributed delay minutes during July 2025–June 2026.
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