Flight Check

Best Airline: CHS to DEN

Charleston to Denver — airline reliability comparison

United Airlines is the most reliable airline on the CHS to DEN route with a 77% on-time rate, compared to Southwest Airlines at 76%. Based on 1,378 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 Airlines77%
Southwest Airlines76%

CHS to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest77%1.0%74m1,378
Southwest AirlinesWNWorst76%0.5%60m1,088

Route Overview

77%
Overall On-Time
68m
Avg Delay
0.8%
Cancel Rate
2,470
Total Flights
CHS to DEN Route DetailsReturn: DEN to CHS
CHS AirportDEN Airport

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