Flight Check

Best Airline: LAS to SAT

Las Vegas to San Antonio — airline reliability comparison

Spirit Airlines is the most reliable airline on the LAS to SAT route with a 85% on-time rate, compared to Southwest Airlines at 74%. Based on 1,500 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

Spirit Airlines85%
Frontier Airlines80%
Southwest Airlines74%

LAS to SAT Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Spirit AirlinesNKBest85%0.5%61m1,500
Frontier AirlinesF980%2.3%63m1,044
Southwest AirlinesWNWorst74%0.5%52m5,103

Route Overview

77%
Overall On-Time
56m
Avg Delay
0.7%
Cancel Rate
7,740
Total Flights
LAS to SAT Route DetailsReturn: SAT to LAS
LAS AirportSAT Airport

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