SkyWest Airlines is the most reliable airline on the SLC to BOI route with a 91% on-time rate, compared to Delta Air Lines at 86%. Based on 1,159 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SLC to BOI
Salt Lake City to Boise — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines91%
Delta Air Lines86%
SLC to BOI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 91% | 0.2% | 46m | 1,159 |
| Delta Air LinesDLWorst | 86% | 0.7% | 69m | 4,907 |
Route Overview
87%
Overall On-Time
67m
Avg Delay
0.6%
Cancel Rate
6,092
Total Flights
Flying out of SLC? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.