Newark to Salt Lake City — airline reliability comparison
Spirit Airlines is the most reliable airline on the EWR to SLC route with a 86% on-time rate, compared to Delta Air Lines at 76%. Based on 57 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 |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 86% | 1.6% | 82m | 57 |
| United AirlinesUA | 77% | 1.6% | 63m | 1,925 |
| Delta Air LinesDLWorst | 76% | 1.9% | 100m | 2,397 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.