Which departure time was most reliable for SJC to SLC?
Among qualifying SJC-to-SLC departure window results, Late morning had the highest on-time rate: 94.6% of 411 flights. Afternoon was lowest at 88.5% across 705 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 367 | 93.5% | 3.5% | 1.6% |
| Late morning | 411 | 94.6% | 2.4% | 0.2% |
| Afternoon | 705 | 88.5% | 7.8% | 0.1% |
| Evening | 325 | 93.5% | 5.2% | 0.0% |
Which weekday was most reliable for SJC to SLC?
Among qualifying SJC-to-SLC weekday results, Tuesday had the highest on-time rate: 95.5% of 245 flights. Sunday was lowest at 89.3% across 280 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 278 | 90.6% | 6.8% | 0.4% |
| Tuesday | 245 | 95.5% | 2.4% | 0.4% |
| Wednesday | 235 | 94.0% | 4.7% | 0.0% |
| Thursday | 272 | 90.8% | 6.2% | 0.4% |
| Friday | 277 | 89.5% | 5.8% | 0.7% |
| Saturday | 221 | 94.1% | 4.1% | 0.5% |
| Sunday | 280 | 89.3% | 6.1% | 0.7% |
Which airline was most reliable for SJC to SLC?
Among qualifying SJC-to-SLC airline results, SkyWest Airlines had the highest on-time rate: 94.8% of 692 flights. Southwest Airlines was lowest at 83.0% across 224 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 892 | 91.7% | 5.4% | 0.7% |
| SkyWest Airlines | 692 | 94.8% | 3.8% | 0.1% |
| Southwest Airlines | 224 | 83.0% | 9.4% | 0.4% |
Which month was most reliable for SJC to SLC?
Among qualifying SJC-to-SLC month results, January 2026 had the highest on-time rate: 96.0% of 124 flights. June 2026 was lowest at 89.0% across 163 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 176 | 89.8% | 8.0% | 0.0% |
| August 2025 | 166 | 92.2% | 4.2% | 0.6% |
| September 2025 | 158 | 92.4% | 5.7% | 0.0% |
| October 2025 | 168 | 92.3% | 3.0% | 0.0% |
| November 2025 | 155 | 91.6% | 5.2% | 1.9% |
| December 2025 | 137 | 92.0% | 4.4% | 1.5% |
| January 2026 | 124 | 96.0% | 4.0% | 0.0% |
| February 2026 | 126 | 92.9% | 4.8% | 0.8% |
| March 2026 | 138 | 91.3% | 5.1% | 0.7% |
| April 2026 | 135 | 92.6% | 4.4% | 0.0% |
| May 2026 | 162 | 91.4% | 6.2% | 0.0% |
| June 2026 | 163 | 89.0% | 7.4% | 0.0% |
What drove SJC to SLC delay minutes?
Airline was the largest recorded SJC-to-SLC delay category, accounting for 60.2% of 11,714 BTS-attributed delay minutes during July 2025–June 2026.
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