Flight Check

Best Airline: LAS to SDF

Las Vegas to Louisville — airline reliability comparison

Southwest Airlines is the most reliable airline on the LAS to SDF route with a 73% on-time rate, compared to Spirit Airlines at 71%. 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 Airlines73%
Spirit Airlines71%

LAS to SDF Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest73%0.5%56m1,119
Spirit AirlinesNKWorst71%0.8%52m485

Route Overview

71%
Overall On-Time
56m
Avg Delay
0.6%
Cancel Rate
1,664
Total Flights
LAS to SDF Route DetailsReturn: SDF to LAS
LAS AirportSDF Airport

Flying out of LAS? 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.