Route
GSP → PHL
Greenville-Spartanburg International Airport Philadelphia International Airport
515 miles
Return route PHL → GSP →
How punctual is this route?
- On-time arrivals
- 88.9%
- Less than 15 minutes late
- Cancelled
- 2.3%
- Of scheduled flights
- Average delay when late
- 96 min
- Flights arriving 15+ minutes late
- Flights tracked
- 441
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 73%
- Late-arriving aircraft 16%
- Air traffic control & airport 8%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 97.4% | 76 |
| October 2025 | 94.4% | 36 |
| November 2025 | 89.7% | 30 |
| December 2025 | 80.0% | 31 |
| January 2026 | 75.6% | 49 |
| February 2026 | 85.3% | 35 |
| March 2026 | 96.6% | 31 |
| April 2026 | 93.3% | 30 |
| May 2026 | 96.8% | 31 |
| June 2026 | 90.0% | 30 |
| July 2026 | 74.2% | 31 |
| August 2026 | 86.7% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| OH | 441 | 88.9% | 2.3% | 96 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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