Flight Check

Best Airline: DEN to SJC

Denver to San Jose — airline reliability comparison

SkyWest Airlines is the most reliable airline on the DEN to SJC route with a 82% on-time rate, compared to Southwest Airlines at 72%. Based on 122 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 Airlines80%
Southwest Airlines72%

DEN to SJC Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest82%1.4%59m122
Frontier AirlinesF981%0.5%42m241
United AirlinesUA80%0.5%66m4,092
Southwest AirlinesWNWorst72%0.6%52m5,808

Route Overview

76%
Overall On-Time
56m
Avg Delay
0.6%
Cancel Rate
10,289
Total Flights
DEN to SJC Route DetailsReturn: SJC to DEN
DEN AirportSJC Airport

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