Flight Check

Best Airline: DEN to BOI

Denver to Boise — airline reliability comparison

SkyWest Airlines is the most reliable airline on the DEN to BOI route with a 82% on-time rate, compared to Southwest Airlines at 72%. Based on 2,342 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 Airlines82%
Frontier Airlines81%
United Airlines78%
Southwest Airlines72%

DEN to BOI Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest82%0.4%66m2,342
Frontier AirlinesF981%0.0%42m106
United AirlinesUA78%0.8%59m3,615
Southwest AirlinesWNWorst72%0.4%48m3,734

Route Overview

77%
Overall On-Time
57m
Avg Delay
0.5%
Cancel Rate
9,852
Total Flights
DEN to BOI Route DetailsReturn: BOI to DEN
DEN AirportBOI Airport

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