Flight Check

Best Airline: CVG to DEN

Cincinnati to Denver — airline reliability comparison

Delta Air Lines is the most reliable airline on the CVG to DEN route with a 91% on-time rate, compared to Southwest Airlines at 74%. Based on 664 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

Delta Air Lines91%
United Airlines86%
Frontier Airlines75%
Southwest Airlines74%

CVG to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest91%0.2%84m664
United AirlinesUA86%0.9%78m2,611
Frontier AirlinesF975%1.6%88m1,516
Southwest AirlinesWNWorst74%0.5%50m1,170

Route Overview

82%
Overall On-Time
73m
Avg Delay
0.9%
Cancel Rate
6,119
Total Flights
CVG to DEN Route DetailsReturn: DEN to CVG
CVG AirportDEN Airport

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