Las Vegas to Miami — airline reliability comparison
American Airlines is the most reliable airline on the LAS to MIA route with a 80% on-time rate, compared to Frontier Airlines at 65%. Based on 4,212 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 |
|---|---|---|---|---|
| American AirlinesAABest | 80% | 0.7% | 99m | 4,212 |
| Spirit AirlinesNK | 80% | 1.2% | 52m | 1,077 |
| Frontier AirlinesF9Worst | 65% | 1.0% | 56m | 367 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.