Best Time to Fly GSP to EWR: On-Time Stats by Hour & Airline
Greenville-Spartanburg International → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
776 flights were scheduled from Greer (GSP) to Newark (EWR) in the last 12 months, and 86.0% of those that flew arrived on time, 8.3 points above the US average of 77.6%.
Republic Airways was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (89% on time) and July the worst month (76%).
The cancellation rate was 4.6% (US average 1.8%).
GSP to EWR on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 86.0% | 84 min | 4.6% | 776 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GSP to EWR
On-time arrival % by scheduled departure hour (local time), 1,431 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.3% | 0.0% | 37 |
| 6am–7am | 93.0% | 3.6% | 530 |
| 7am–8am | Limited data | 12 | |
| 8am–9am | 87.0% | 2.1% | 94 |
| 9am–10am | 96.1% | 3.8% | 53 |
| 11am–12pm | 83.5% | 3.0% | 264 |
| 12pm–1pm | 90.5% | 3.0% | 131 |
| 1pm–2pm | Limited data | 17 | |
| 5pm–6pm | 52.9% | 17.1% | 82 |
| 6pm–7pm | 72.0% | 3.6% | 137 |
| 7pm–8pm | 67.7% | 12.2% | 74 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GSP to EWR
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 13 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 87.7% | +0.1 pts | 1.7% | 58 |
| Summer peak (Jun 15 - Aug 15) | 77.5% | -10.1 pts | 10.0% | 341 |
| All other days | 87.7% | — | 2.8% | 1,019 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).