Phoenix (PHX) to Salt Lake City (SLC): On-Time Performance
Data through May 2026
On this route, when you fly matters more than who you fly. Book the morning: morning departures from PHX reach SLC on time 91% of the time, versus 76% later in the day. Overall the route posts a 84% on-time rate, ahead of the national 78%. Among carriers, Delta Air Lines has the edge at 90%.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 16
- last 12 months
- Duration
- 1h 41m
- scheduled
- Distance
- 507 mi
Best airline from PHX to SLC
6 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 90% | 9 min | 0.5% | 3,440 |
| American Airlines | 89% | 10 min | 0.2% | 534 |
| Envoy Air | 87% | 8 min | 0.0% | 272 |
| Frontier Airlines | 85% | 12 min | 1.2% | 1,347 |
| SkyWest Airlines | 84% | 10 min | 0.1% | 2,350 |
| Southwest Airlines | 78% | 12 min | 0.3% | 3,727 |
Monthly on-time trend
Best time to fly from PHX to SLC
Aim for departures around 5 a.m. (100% on-time); avoid 9 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 83% | 12 min |
| Tuesdaybest | 88% | 7 min |
| Wednesday | 87% | 7 min |
| Thursday | 82% | 12 min |
| Friday | 82% | 13 min |
| Saturday | 86% | 9 min |
| Sunday | 81% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft50%
- Airline operations42%
- National airspace system6%
- Weather2%
Frequently asked questions
- How often are flights from PHX to SLC delayed?
- 16% of PHX–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- Which airline is most reliable from PHX to SLC?
- Delta Air Lines has the best on-time record on this route at 90%, based on 3,440 flights. 6 airlines flew PHX–SLC frequently enough to compare in this period.
- What is the best time of day to fly from PHX to SLC?
- Departures around 5 a.m. have the best record (100% on-time), while departures around 9 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHX to SLC?
- The scheduled PHX–SLC flight time averages 1h 41m over 507 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are PHX to SLC flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What day of the week is most reliable for PHX to SLC?
- Tuesday flights have the best record at 88% on-time. Day-of-week differences on this route are modest.
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Based on 11,670 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.