Flight Check

Best Airline: PHL to GSP

Philadelphia to Greenville — airline reliability comparison

Republic Airways is the most reliable airline on the PHL to GSP route with a 87% on-time rate, compared to PSA Airlines at 73%. Based on 183 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

Republic Airways87%
PSA Airlines73%

PHL to GSP Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest87%1.4%42m183
PSA AirlinesOHWorst73%2.5%84m1,524

Route Overview

75%
Overall On-Time
81m
Avg Delay
2.3%
Cancel Rate
1,719
Total Flights
PHL to GSP Route DetailsReturn: GSP to PHL
PHL AirportGSP Airport

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