Greer to Newark

What the Data Says About GSP to EWR

The Greer to Newark corridor (GSP → EWR) covers roughly 594 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 3,273 flights in the dataset, this route posts a 84.8% on-time rate with an average delay of 87.4 minutes when flights run late. Over the most recent 24 months of BTS data, 1,839 flights were recorded on this pairing — 53 cancelled (2.9%) and 4 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 3,273 total flights analyzed, the 84.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 87.4-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Dec 2023 posted the best performance on this corridor at 97% on-time, while May 2025 came in at 73% on-time — a 24-point gap between best and worst recent month. For travelers evaluating the GSP to EWR route, the combination of a 84.8% on-time rate, 87.4-minute average delay, 2.9% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.