Las Vegas to Austin — airline reliability comparison
Spirit Airlines is the most reliable airline on the LAS to AUS route with a 85% on-time rate, compared to Delta Air Lines at 72%. Based on 719 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 | 85% | 0.7% | 50m | 719 |
| Frontier AirlinesF9 | 77% | 1.4% | 70m | 713 |
| Southwest AirlinesWN | 75% | 0.6% | 51m | 7,502 |
| American AirlinesAA | 74% | 0.6% | 111m | 1,073 |
| MQ | 74% | 0.0% | 234m | 23 |
| Delta Air LinesDLWorst | 72% | 0.9% | 77m | 1,026 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.