Flight Check

Best Airline: PHL to SJU

Philadelphia to San Juan — airline reliability comparison

JetBlue Airways is the most reliable airline on the PHL to SJU route with a 74% on-time rate, compared to Frontier Airlines at 59%. Based on 122 flights tracked.

This route involves weather-prone airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

JetBlue Airways74%
American Airlines70%
Spirit Airlines69%
Frontier Airlines59%

PHL to SJU Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
JetBlue AirwaysB6Best74%2.4%144m122
American AirlinesAA70%0.6%75m1,852
Spirit AirlinesNK69%3.0%68m1,083
Frontier AirlinesF9Worst59%2.6%68m2,705

Route Overview

65%
Overall On-Time
74m
Avg Delay
2.2%
Cancel Rate
5,792
Total Flights
PHL to SJU Route DetailsReturn: SJU to PHL
PHL AirportSJU Airport

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