Flight Check

Best Airline: DEN to SJU

Denver to San Juan — airline reliability comparison

United Airlines is the most reliable airline on the DEN to SJU route with a 78% on-time rate. Based on 891 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 Airlines78%

DEN to SJU Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest78%0.3%50m891

Route Overview

78%
Overall On-Time
50m
Avg Delay
0.3%
Cancel Rate
891
Total Flights
DEN to SJU Route DetailsReturn: SJU to DEN
DEN AirportSJU Airport

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