Flight Check

Best Airline: HOU to DEN

Houston to Denver — airline reliability comparison

Southwest Airlines is the most reliable airline on the HOU to DEN route with a 81% on-time rate, compared to Frontier Airlines at 70%. Based on 8,598 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

Southwest Airlines81%
Frontier Airlines70%

HOU to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest81%0.9%54m8,598
Frontier AirlinesF9Worst70%2.6%89m581

Route Overview

80%
Overall On-Time
58m
Avg Delay
1.1%
Cancel Rate
9,181
Total Flights
HOU to DEN Route DetailsReturn: DEN to HOU
HOU AirportDEN Airport

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