is the most reliable airline on the SLC to PHX route with a 91% on-time rate, compared to Frontier Airlines at 77%. Based on 315 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SLC to PHX
Salt Lake City to Phoenix — airline reliability comparison
On-Time Rate by Airline
91%
SkyWest Airlines88%
Delta Air Lines85%
American Airlines84%
Southwest Airlines81%
Frontier Airlines77%
SLC to PHX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| MQBest | 91% | 0.2% | 55m | 315 |
| SkyWest AirlinesOO | 88% | 0.1% | 85m | 3,360 |
| Delta Air LinesDL | 85% | 0.4% | 58m | 6,217 |
| American AirlinesAA | 84% | 0.2% | 130m | 1,554 |
| Southwest AirlinesWN | 81% | 0.5% | 54m | 6,532 |
| Frontier AirlinesF9Worst | 77% | 1.5% | 86m | 2,176 |
Route Overview
83%
Overall On-Time
70m
Avg Delay
0.5%
Cancel Rate
20,256
Total Flights
Flying out of SLC? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.