SkyWest Airlines is the most reliable airline on the SLC to ONT route with a 92% on-time rate, compared to Frontier Airlines at 82%. Based on 1,285 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SLC to ONT
Salt Lake City to Ontario — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines92%
Delta Air Lines87%
Frontier Airlines82%
SLC to ONT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 92% | 0.1% | 41m | 1,285 |
| Delta Air LinesDL | 87% | 1.7% | 66m | 2,782 |
| Frontier AirlinesF9Worst | 82% | 4.0% | 90m | 140 |
Route Overview
89%
Overall On-Time
66m
Avg Delay
1.1%
Cancel Rate
4,258
Total Flights
Flying out of SLC? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.