Los Angeles to Philadelphia — airline reliability comparison
Spirit Airlines is the most reliable airline on the LAX to PHL route with a 83% on-time rate, compared to Frontier Airlines at 40%. Based on 857 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 | 83% | 0.6% | 44m | 857 |
| American AirlinesAA | 82% | 1.0% | 83m | 7,952 |
| Frontier AirlinesF9Worst | 40% | 4.7% | 79m | 116 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.