Flight Check

Best Airline: DEN to ATL

Denver to Atlanta — airline reliability comparison

Delta Air Lines is the most reliable airline on the DEN to ATL route with a 84% on-time rate, compared to Frontier Airlines at 68%. Based on 10,234 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 Lines84%
United Airlines79%
Southwest Airlines71%
Frontier Airlines68%

DEN to ATL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest84%0.9%71m10,234
United AirlinesUA79%0.9%60m3,711
Southwest AirlinesWN71%0.6%54m4,682
Frontier AirlinesF9Worst68%1.3%62m2,488

Route Overview

78%
Overall On-Time
63m
Avg Delay
0.9%
Cancel Rate
21,115
Total Flights
DEN to ATL Route DetailsReturn: ATL to DEN
DEN AirportATL Airport

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