Flight Check

Best Airline: DEN to JAX

Denver to Jacksonville — airline reliability comparison

Frontier Airlines is the most reliable airline on the DEN to JAX route with a 89% on-time rate, compared to Southwest Airlines at 68%. Based on 54 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

Frontier Airlines89%
United Airlines73%
Southwest Airlines68%

DEN to JAX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Frontier AirlinesF9Best89%1.7%22m54
United AirlinesUA73%0.3%59m1,885
Southwest AirlinesWNWorst68%0.5%51m1,192

Route Overview

73%
Overall On-Time
56m
Avg Delay
0.4%
Cancel Rate
3,204
Total Flights
DEN to JAX Route DetailsReturn: JAX to DEN
DEN AirportJAX Airport

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