Flight Check

Best Airline: BOI to DEN

Boise to Denver — airline reliability comparison

SkyWest Airlines is the most reliable airline on the BOI to DEN route with a 86% on-time rate, compared to United Airlines at 82%. Based on 2,335 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 Airlines86%
Frontier Airlines83%
Southwest Airlines82%
United Airlines82%

BOI to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest86%0.4%65m2,335
Frontier AirlinesF983%0.0%95m106
Southwest AirlinesWN82%0.5%57m3,726
United AirlinesUAWorst82%1.0%82m3,620

Route Overview

83%
Overall On-Time
71m
Avg Delay
0.6%
Cancel Rate
9,842
Total Flights
BOI to DEN Route DetailsReturn: DEN to BOI
BOI AirportDEN Airport

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