Los Angeles to Boston — airline reliability comparison
United Airlines is the most reliable airline on the LAX to BOS route with a 88% on-time rate, compared to Spirit Airlines at 58%. Based on 2,666 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 | 88% | 0.8% | 59m | 2,666 |
| American AirlinesAA | 82% | 0.5% | 79m | 3,712 |
| Delta Air LinesDL | 82% | 1.1% | 82m | 4,150 |
| JetBlue AirwaysB6 | 78% | 0.7% | 73m | 5,888 |
| Spirit AirlinesNKWorst | 58% | 0.0% | 62m | 75 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.