Best Time to Fly GSP to BNA: On-Time Stats by Hour & Airline
Greenville-Spartanburg International → Nashville International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.4% of Greer (GSP) to Nashville (BNA) flights arrived on time (668 scheduled flights). That is 5.8 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (91% on time) and June the worst month (71%).
The cancellation rate was 0.5% (US average 1.8%).
GSP to BNA 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 |
|---|---|---|---|---|
| Southwest Airlines | 83.4% | 45 min | 0.5% | 668 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GSP to BNA
On-time arrival % by scheduled departure hour (local time), 1,033 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 98.1% | 0.0% | 106 |
| 7am–8am | 90.7% | 0.0% | 43 |
| 10am–11am | 90.2% | 0.5% | 391 |
| 11am–12pm | 86.6% | 0.0% | 149 |
| 12pm–1pm | 84.5% | 0.0% | 181 |
| 1pm–2pm | Limited data | 8 | |
| 4pm–5pm | Limited data | 1 | |
| 5pm–6pm | Limited data | 27 | |
| 6pm–7pm | 56.8% | 0.0% | 82 |
| 7pm–8pm | 42.9% | 2.8% | 36 |
| 8pm–9pm | Limited data | 8 | |
| 9pm–10pm | Limited data | 1 | |
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 BNA
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 | 16 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 87.9% | +0.5 pts | 0.0% | 33 |
| Summer peak (Jun 15 - Aug 15) | 76.5% | -10.9 pts | 0.0% | 217 |
| All other days | 87.4% | — | 0.4% | 767 |
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).