San Diego to Las Vegas — airline reliability comparison
Spirit Airlines is the most reliable airline on the SAN to LAS route with a 79% on-time rate, compared to Frontier Airlines at 65%. Based on 3,629 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 | 79% | 1.7% | 71m | 3,629 |
| Southwest AirlinesWN | 76% | 1.5% | 55m | 14,378 |
| SkyWest AirlinesOO | 73% | 1.1% | 71m | 3,688 |
| Frontier AirlinesF9Worst | 65% | 1.8% | 104m | 1,792 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.