Flight Check

Best Airline: SDF to LAS

Louisville to Las Vegas — airline reliability comparison

Southwest Airlines is the most reliable airline on the SDF to LAS route with a 83% on-time rate, compared to Spirit Airlines at 75%. Based on 1,119 flights tracked.

This route involves high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Southwest Airlines83%
Spirit Airlines75%

SDF to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest83%0.4%54m1,119
Spirit AirlinesNKWorst75%1.4%89m484

Route Overview

81%
Overall On-Time
64m
Avg Delay
0.7%
Cancel Rate
1,665
Total Flights
SDF to LAS Route DetailsReturn: LAS to SDF
SDF AirportLAS Airport

Flying out of SDF? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

Data last updated October 2026. Source: Bureau of Transportation Statistics.