Flight Check

Best Airline: DEN to GRR

Denver to Grand Rapids — airline reliability comparison

Frontier Airlines is the most reliable airline on the DEN to GRR route with a 78% on-time rate, compared to Southwest Airlines at 72%. Based on 543 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 Airlines78%
United Airlines76%
Southwest Airlines72%

DEN to GRR Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Frontier AirlinesF9Best78%0.5%63m543
United AirlinesUA76%0.5%61m2,615
Southwest AirlinesWNWorst72%0.3%46m1,238

Route Overview

75%
Overall On-Time
56m
Avg Delay
0.4%
Cancel Rate
4,468
Total Flights
DEN to GRR Route DetailsReturn: GRR to DEN
DEN AirportGRR Airport

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