New York to Denver — airline reliability comparison
United Airlines is the most reliable airline on the LGA to DEN route with a 82% on-time rate, compared to Frontier Airlines at 63%. Based on 7,445 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 |
|---|---|---|---|---|
| United AirlinesUABest | 82% | 1.6% | 82m | 7,445 |
| JetBlue AirwaysB6 | 80% | 1.1% | 67m | 857 |
| Delta Air LinesDL | 78% | 3.0% | 86m | 3,519 |
| Southwest AirlinesWN | 72% | 2.3% | 62m | 4,929 |
| Frontier AirlinesF9Worst | 63% | 3.8% | 100m | 402 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.