Flight Check

Best Airline: AUS to DEN

Austin to Denver — airline reliability comparison

United Airlines is the most reliable airline on the AUS to DEN route with a 84% on-time rate, compared to Southwest Airlines at 78%. Based on 6,507 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

United Airlines84%
SkyWest Airlines81%
American Airlines79%
Frontier Airlines78%
Southwest Airlines78%

AUS to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest84%1.1%72m6,507
SkyWest AirlinesOO81%0.5%74m552
American AirlinesAA79%0.0%104m59
Frontier AirlinesF978%1.3%78m1,397
Southwest AirlinesWNWorst78%1.0%53m8,812

Route Overview

80%
Overall On-Time
62m
Avg Delay
1%
Cancel Rate
17,337
Total Flights
AUS to DEN Route DetailsReturn: DEN to AUS
AUS AirportDEN Airport

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