Which departure time was most reliable for PHX to SLC?
Among qualifying PHX-to-SLC departure window results, Early morning had the highest on-time rate: 90.8% of 1,248 flights. Night was lowest at 61.1% across 311 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 1,248 | 90.8% | 5.0% | 0.4% |
| Late morning | 998 | 87.2% | 6.4% | 0.8% |
| Afternoon | 1,619 | 82.6% | 10.6% | 0.7% |
| Evening | 1,581 | 77.0% | 13.3% | 0.3% |
| Night | 311 | 61.1% | 26.0% | 0.6% |
Which weekday was most reliable for PHX to SLC?
Among qualifying PHX-to-SLC weekday results, Tuesday had the highest on-time rate: 88.3% of 797 flights. Sunday was lowest at 78.9% across 864 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 878 | 80.3% | 12.8% | 0.7% |
| Tuesday | 797 | 88.3% | 6.5% | 0.4% |
| Wednesday | 785 | 85.2% | 7.8% | 0.1% |
| Thursday | 861 | 79.2% | 12.1% | 0.5% |
| Friday | 875 | 80.3% | 11.8% | 0.8% |
| Saturday | 697 | 86.7% | 7.3% | 0.4% |
| Sunday | 864 | 78.9% | 12.3% | 0.9% |
Which airline was most reliable for PHX to SLC?
Among qualifying PHX-to-SLC airline results, Delta Air Lines had the highest on-time rate: 89.8% of 1,708 flights. Southwest Airlines was lowest at 75.2% across 1,858 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,858 | 75.2% | 13.6% | 0.3% |
| Delta Air Lines | 1,708 | 89.8% | 6.4% | 0.6% |
| SkyWest Airlines | 1,159 | 82.8% | 10.2% | 0.3% |
| Frontier Airlines | 677 | 81.8% | 10.5% | 1.8% |
| American Airlines | 266 | 86.1% | 9.4% | 0.4% |
| Envoy Air | 89 | 83.1% | 14.6% | 0.0% |
Which month was most reliable for PHX to SLC?
Among qualifying PHX-to-SLC month results, September 2025 had the highest on-time rate: 86.2% of 413 flights. April 2026 was lowest at 79.1% across 522 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 431 | 79.6% | 10.7% | 1.4% |
| August 2025 | 429 | 84.8% | 10.0% | 0.2% |
| September 2025 | 413 | 86.2% | 8.2% | 0.5% |
| October 2025 | 476 | 83.0% | 10.7% | 0.0% |
| November 2025 | 477 | 81.3% | 11.9% | 1.7% |
| December 2025 | 515 | 83.1% | 8.9% | 0.6% |
| January 2026 | 490 | 82.9% | 8.8% | 0.4% |
| February 2026 | 488 | 83.4% | 10.5% | 0.4% |
| March 2026 | 581 | 85.0% | 9.1% | 0.5% |
| April 2026 | 522 | 79.1% | 12.1% | 0.8% |
| May 2026 | 500 | 82.0% | 9.0% | 0.2% |
| June 2026 | 435 | 79.3% | 13.1% | 0.0% |
What drove PHX to SLC delay minutes?
Late aircraft was the largest recorded PHX-to-SLC delay category, accounting for 52.5% of 58,882 BTS-attributed delay minutes during July 2025–June 2026.
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