San Francisco to Las Vegas — airline reliability comparison
United Airlines is the most reliable airline on the SFO to LAS route with a 80% on-time rate, compared to Frontier Airlines at 63%. Based on 8,640 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 |
|---|---|---|---|---|
| United AirlinesUABest | 80% | 1.1% | 60m | 8,640 |
| SkyWest AirlinesOO | 76% | 0.4% | 50m | 677 |
| Alaska AirlinesAS | 73% | 1.4% | 60m | 3,540 |
| Southwest AirlinesWN | 67% | 0.8% | 59m | 4,702 |
| Frontier AirlinesF9Worst | 63% | 1.6% | 90m | 3,425 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.