Atlanta to Las Vegas — airline reliability comparison
Southwest Airlines is the most reliable airline on the ATL to LAS route with a 78% on-time rate, compared to Frontier Airlines at 63%. Based on 2,422 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 |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 78% | 0.2% | 51m | 2,422 |
| Delta Air LinesDL | 78% | 0.8% | 53m | 11,739 |
| Spirit AirlinesNK | 64% | 1.7% | 68m | 1,781 |
| Frontier AirlinesF9Worst | 63% | 2.1% | 91m | 1,829 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.