Flight Check

Best Airline: SAT to DEN

San Antonio to Denver — airline reliability comparison

SkyWest Airlines is the most reliable airline on the SAT to DEN route with a 95% on-time rate, compared to Frontier Airlines at 75%. Based on 42 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

SkyWest Airlines95%
United Airlines84%
Southwest Airlines83%
Frontier Airlines75%

SAT to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest95%0.0%55m42
United AirlinesUA84%0.6%84m4,778
Southwest AirlinesWN83%0.7%54m5,298
Frontier AirlinesF9Worst75%2.3%78m919

Route Overview

83%
Overall On-Time
69m
Avg Delay
0.8%
Cancel Rate
11,064
Total Flights
SAT to DEN Route DetailsReturn: DEN to SAT
SAT AirportDEN Airport

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