Flight Check

Best Airline: IND to DEN

Indianapolis to Denver — airline reliability comparison

United Airlines is the most reliable airline on the IND to DEN route with a 83% on-time rate, compared to Frontier Airlines at 78%. Based on 3,123 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 Airlines83%
Southwest Airlines81%
Frontier Airlines78%

IND to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest83%1.0%63m3,123
Southwest AirlinesWN81%0.6%56m5,071
Frontier AirlinesF9Worst78%1.6%72m959

Route Overview

81%
Overall On-Time
61m
Avg Delay
0.8%
Cancel Rate
9,162
Total Flights
IND to DEN Route DetailsReturn: DEN to IND
IND AirportDEN Airport

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