Boston to Los Angeles — airline reliability comparison
United Airlines is the most reliable airline on the BOS to LAX route with a 82% on-time rate, compared to Spirit Airlines at 40%. Based on 2,668 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% | 0.8% | 67m | 2,668 |
| Delta Air LinesDL | 78% | 1.2% | 88m | 4,147 |
| American AirlinesAA | 78% | 0.5% | 106m | 3,709 |
| JetBlue AirwaysB6 | 77% | 0.7% | 69m | 5,887 |
| Spirit AirlinesNKWorst | 40% | 3.2% | 100m | 74 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.