GSP (Greenville) to PHL (Philadelphia) flights arrive on time 88% of the time. The most reliable airline on this route is PSA Airlines at 89%. The average delay is 88 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 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 88% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — PSA Airlines leads slightly at 89% vs Republic Airways at 85%.
Airline Comparison
PSA Airlines leads at 89% on time; Republic Airways trails at 85%.
Accurate?
Good to know
Departing from GSP
81% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. GSP has long runway queues.
TSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at PHL
77% on timeWhen flights into PHL are late, the average delay is 84 minutes. Build buffer if you have ground plans.
If connecting at PHL: TSA is ~15 min right now. Allow at least 60 minutes for a domestic connection.
PHL has a 2.1% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what PSA Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of GSP? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.