GSP (Greenville) to PHL (Philadelphia) flights arrive on time 86% of the time. The most reliable airline on this route is PSA Airlines at 88%. The average delay is 81 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.GSP → PHL
GSP (Greenville) to PHL (Philadelphia)
GSP → PHL on-time performance by month
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This route is usually on time. About 86% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
PSA Airlines edges out Republic Airways on this route — 88% vs 82% on time.
Airline Comparison
PSA Airlines leads at 88% on time; Republic Airways trails at 82%.
Accurate?
Good to know
Departing from GSP
83% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. GSP has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at PHL
79% on timeWhen flights into PHL are late, the average delay is 79 minutes. Build buffer if you have ground plans.
If connecting at PHL: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Data last updated March 2026. Source: Bureau of Transportation Statistics.