Las Vegas to San Diego — airline reliability comparison
Spirit Airlines is the most reliable airline on the LAS to SAN route with a 76% on-time rate, compared to Frontier Airlines at 67%. Based on 3,633 flights tracked.
This route involves 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 | 76% | 1.1% | 60m | 3,633 |
| SkyWest AirlinesOO | 71% | 1.0% | 65m | 3,689 |
| Southwest AirlinesWN | 68% | 1.1% | 50m | 14,501 |
| Frontier AirlinesF9Worst | 67% | 1.3% | 74m | 1,793 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.