Flight Check

Best Airline: SAT to LAS

San Antonio to Las Vegas — airline reliability comparison

Spirit Airlines is the most reliable airline on the SAT to LAS route with a 81% on-time rate, compared to Frontier Airlines at 78%. Based on 1,499 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 Airlines81%
Southwest Airlines81%
Frontier Airlines78%

SAT to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Spirit AirlinesNKBest81%0.9%81m1,499
Southwest AirlinesWN81%0.4%54m5,183
Frontier AirlinesF9Worst78%2.8%76m1,045

Route Overview

81%
Overall On-Time
65m
Avg Delay
0.9%
Cancel Rate
7,820
Total Flights
SAT to LAS Route DetailsReturn: LAS to SAT
SAT AirportLAS Airport

Flying out of SAT? 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.