Route · PHL → GSP · 2020–2025 BTS data
Philadelphia to Greer
The PHL–GSP corridor (Philadelphia, PA → Greer, SC) runs behind the national average, served by 3 carriers across roughly 515 miles.
Data updated 2026-06-13
- 77.7%
- On-time
- -1.3 pts
- vs US avg
- 88 min
- Delay when late
- 2,337
- Flights
Cancelled
1.9%
Best Month
Sep 2025 89%
Worst Month
Aug 2024 57%
Distance
515 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 9 | 2 | 0 | OH |
| Nov 2025 | 30 | 9 | 1 | 0 | OH |
| Oct 2025 | 36 | 6 | 0 | 0 | OH |
| Sep 2025 | 76 | 8 | 0 | 0 | OH |
| Aug 2025 | 31 | 8 | 0 | 0 | OH |
| Jul 2025 | 31 | 16 | 2 | 0 | OH |
| Jun 2025 | 34 | 19 | 3 | 0 | OH |
| May 2025 | 57 | 24 | 2 | 0 | OH |
| Apr 2025 | 30 | 11 | 0 | 0 | OH |
| Mar 2025 | 45 | 13 | 0 | 0 | OH |
| Feb 2025 | 44 | 15 | 1 | 0 | OH |
| Jan 2025 | 31 | 6 | 2 | 0 | OH |
| Dec 2024 | 30 | 9 | 1 | 0 | OH |
| Nov 2024 | 32 | 4 | 0 | 0 | OH |
| Oct 2024 | 41 | 11 | 0 | 0 | OH |
| Sep 2024 | 33 | 14 | 0 | 0 | YX,OH |
| Aug 2024 | 61 | 26 | 4 | 1 | YX,OH |
| Jul 2024 | 61 | 18 | 1 | 0 | OH,YX |
| Jun 2024 | 60 | 7 | 1 | 0 | OH,YX |
| May 2024 | 81 | 13 | 0 | 0 | OH |
| Apr 2024 | 33 | 9 | 0 | 0 | OH,YX |
| Mar 2024 | 62 | 7 | 0 | 0 | OH,YX |
| Feb 2024 | 44 | 6 | 0 | 0 | OH,YX |
| Jan 2024 | 37 | 8 | 0 | 0 | YX,OH |
Cancellation Rate
1.9%
20 of 1,051 flights
Diversion Rate
0.1%
1 of 1,051 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Origin airport →GSP - Greer
Full on-time, delay-cause, and seasonal performance for Greer, SC.
Destination airport →Compare the two airports
See PHL and GSP side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHL–GSP.
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What the Data Says About PHL to GSP
The Philadelphia to Greer corridor (PHL to GSP) posts a 77.7% on-time rate on the lower edge of the average band, based on 2,337 tracked flights. Late flights run 88.4 minutes behind on average. 3 carriers cover the 515-mile route; over the last 24 months, 20 of 1,051 flights were cancelled (1.9%) and 0.1% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 89% on-time, while Aug 2024 came in at just 57% - a 32-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.