Chicago to Salt Lake City — airline reliability comparison
Delta Air Lines is the most reliable airline on the ORD to SLC route with a 79% on-time rate, compared to Frontier Airlines at 54%. Based on 3,651 flights tracked.
This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 79% | 1.0% | 101m | 3,651 |
| American AirlinesAA | 77% | 0.8% | 67m | 1,950 |
| United AirlinesUA | 77% | 0.9% | 63m | 3,536 |
| MQ | 76% | 0.0% | 51m | 73 |
| SkyWest AirlinesOO | 73% | 0.7% | 77m | 1,438 |
| Frontier AirlinesF9Worst | 54% | 6.2% | 42m | 47 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.