Flight Check

Best Airline: DEN to FSD

Denver to Sioux Falls — airline reliability comparison

SkyWest Airlines is the most reliable airline on the DEN to FSD route with a 84% on-time rate, compared to United Airlines at 74%. Based on 3,859 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 Airlines84%
Frontier Airlines79%
United Airlines74%

DEN to FSD Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest84%1.0%69m3,859
Frontier AirlinesF979%0.7%61m642
United AirlinesUAWorst74%1.1%74m1,556

Route Overview

80%
Overall On-Time
73m
Avg Delay
1%
Cancel Rate
6,096
Total Flights
DEN to FSD Route DetailsReturn: FSD to DEN
DEN AirportFSD Airport

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