Flight Check

Best Airline: PHL to SFO

Philadelphia to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the PHL to SFO route with a 80% on-time rate, compared to American Airlines at 75%. Based on 1,905 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 Airlines80%
American Airlines75%

PHL to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest80%0.7%72m1,905
American AirlinesAAWorst75%1.3%69m3,898

Route Overview

76%
Overall On-Time
72m
Avg Delay
1.1%
Cancel Rate
5,803
Total Flights
PHL to SFO Route DetailsReturn: SFO to PHL
PHL AirportSFO Airport

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