Philadelphia (PHL) to Greer (GSP): On-Time Performance
Data through July 2026
Delays are only half the story on PHL–GSP: 3% of its scheduled flights were outright cancelled, well above the US norm, so a backup plan matters more here than on most routes. When flights do go, 67% land on time, below the national average of 78%.
- On-time
- 67%
- arrived <15 min late
- Avg delay
- 30 min
- completed flights
- Cancelled
- 3.0%
- Flights/day
- 1.2
- last 12 months
- Duration
- 1h 58m
- scheduled
- Distance
- 515 mi
Best airline from PHL to GSP
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 70% | 17 min | 4.8% | 63 |
| PSA Airlines | 67% | 31 min | 2.9% | 908 |
Monthly on-time trend
Best time to fly from PHL to GSP
Aim for departures around 10 a.m. (97% on-time); avoid 5 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 33 min |
| Tuesday | 72% | 29 min |
| Wednesdaybest | 76% | 20 min |
| Thursday | 62% | 35 min |
| Friday | 64% | 33 min |
| Saturday | 59% | 24 min |
| Sunday | 61% | 37 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations27%
- National airspace system20%
- Weather11%
Frequently asked questions
- How often are flights from PHL to GSP delayed?
- 33% of PHL–GSP flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 30 minutes.
- Which airline is most reliable from PHL to GSP?
- Republic Airways has the best on-time record on this route at 70%, based on 63 flights. 2 airlines flew PHL–GSP frequently enough to compare in this period.
- What is the best time of day to fly from PHL to GSP?
- Departures around 10 a.m. have the best record (97% on-time), while departures around 5 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to GSP?
- The scheduled PHL–GSP flight time averages 1h 58m over 515 miles. Actual arrival times vary — flights on this route land 15+ minutes late 33% of the time.
- How often are PHL to GSP flights cancelled?
- 3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What is the worst month to fly from PHL to GSP?
- June 2025 was the roughest month in this dataset, with only 39% of arrivals on time. The best was April 2026 at 90%. If your dates are flexible, that 51-point gap is worth planning around.
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Based on 971 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.