is the most reliable airline on the PHX to SLC route with a 90% on-time rate, compared to Southwest Airlines at 80%. Based on 315 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PHX to SLC
Phoenix to Salt Lake City — airline reliability comparison
On-Time Rate by Airline
90%
Delta Air Lines89%
SkyWest Airlines87%
American Airlines85%
Frontier Airlines83%
Southwest Airlines80%
PHX to SLC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| MQBest | 90% | 0.0% | 45m | 315 |
| Delta Air LinesDL | 89% | 0.5% | 77m | 6,216 |
| SkyWest AirlinesOO | 87% | 0.1% | 55m | 3,360 |
| American AirlinesAA | 85% | 0.1% | 72m | 1,553 |
| Frontier AirlinesF9 | 83% | 1.1% | 74m | 2,177 |
| Southwest AirlinesWNWorst | 80% | 0.4% | 46m | 6,490 |
Route Overview
85%
Overall On-Time
60m
Avg Delay
0.4%
Cancel Rate
20,213
Total Flights
Flying out of PHX? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.