Flight Check

Best Airline: COS to DEN

Colorado Springs to Denver — airline reliability comparison

SkyWest Airlines is the most reliable airline on the COS to DEN route with a 81% on-time rate, compared to United Airlines at 76%. Based on 11,068 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 Airlines81%
Southwest Airlines80%
United Airlines76%

COS to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest81%1.8%78m11,068
Southwest AirlinesWN80%0.8%59m4,402
United AirlinesUAWorst76%1.4%78m1,862

Route Overview

80%
Overall On-Time
74m
Avg Delay
1.5%
Cancel Rate
17,337
Total Flights
COS to DEN Route DetailsReturn: DEN to COS
COS AirportDEN Airport

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