Alaska Airlines is the most reliable airline on the PDX to SLC route with a 93% on-time rate, compared to Frontier Airlines at 66%. Based on 45 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PDX to SLC
Portland to Salt Lake City — airline reliability comparison
On-Time Rate by Airline
Alaska Airlines93%
Delta Air Lines91%
SkyWest Airlines85%
Frontier Airlines66%
PDX to SLC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 93% | 0.0% | 34m | 45 |
| Delta Air LinesDL | 91% | 0.9% | 75m | 6,085 |
| SkyWest AirlinesOO | 85% | 0.4% | 59m | 2,245 |
| Frontier AirlinesF9Worst | 66% | 3.0% | 42m | 100 |
Route Overview
89%
Overall On-Time
69m
Avg Delay
0.7%
Cancel Rate
8,549
Total Flights
Flying out of PDX? 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.