PHL to GSP flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to Greenville-Spartanburg International Airport · 515 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or GSP right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to Greer (GSP) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.9% were cancelled, and 14% arrived an hour or more late.
- PSA Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 10am did best (97% on time); around 5pm did worst (55%).
- Wednesday was the most reliable day to fly (80% on time) and Saturday the least (63%).
- The largest source of delay minutes was late-arriving aircraft (47%).
Which airline is most on time from PHL to GSP?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| PSA AirlinesRegional airline operating American Eagle flights. | 71% | 2.9% | 27 min | 14.1% | 441 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am79%43 flights
- 10am97%33 flights
- 3pm74%19 flights
- 5pm55%115 flights
- 6pm74%223 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%3.1% cancelled
- Tuesday71%1.7% cancelled
- Wednesday80%0.0% cancelled
- Thursday65%3.1% cancelled
- Friday75%1.5% cancelled
- Saturday63%3.5% cancelled
- Sunday65%7.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft47%
- Airline (crew, maintenance, cleaning, fueling)23%
- Air traffic control & airport congestion19%
- Extreme weather10%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather85%
- Airline (crew, maintenance, cleaning, fueling)15%
- Air traffic control & airport congestion0%
- Security0%
PHL to GSP: common questions
- How often are PHL to GSP flights on time?
- 71% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Philadelphia to Greer cancelled?
- 2.9% of scheduled flights were cancelled (13 of 441).
- How long are typical delays?
- Across all flights the average arrival delay was 27 min (early arrivals count as zero). Flights that were late arrived 92 min behind schedule on average, and 14.1% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 26 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GSP to PHL — 89% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → GSP, nonstop flights by US airlines that report to the DOT. How we calculate this.