SkyWest Airlines is the most reliable airline on the GEG to SLC route with a 93% on-time rate, compared to Delta Air Lines at 87%. Based on 1,588 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: GEG to SLC
Spokane to Salt Lake City — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines93%
Delta Air Lines87%
GEG to SLC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 93% | 0.4% | 57m | 1,588 |
| Delta Air LinesDLWorst | 87% | 0.7% | 86m | 4,414 |
Route Overview
89%
Overall On-Time
84m
Avg Delay
0.6%
Cancel Rate
6,028
Total Flights
Flying out of GEG? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.