Best Time to Fly MIA to GSP: On-Time Stats by Hour & Airline
Miami International → Greenville-Spartanburg International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.8% of Miami (MIA) to Greer (GSP) flights arrived on time (727 scheduled flights). That is 2.2 points above the national average of 77.6%.
Envoy Air was the only reporting airline with regular flights on this route.
October has been the best month (91% on time) and Sunday the weakest day of the week (74%).
1.2% of flights were cancelled, versus 1.8% nationally.
MIA to GSP 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 |
|---|---|---|---|---|
| Envoy Air | 80.0% | 42 min | 1.0% | 702 |
| Republic Airways | Limited data | 25 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to GSP
On-time arrival % by scheduled departure hour (local time), 1,327 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 2 | |
| 8am–9am | Limited data | 13 | |
| 9am–10am | 87.5% | 2.4% | 41 |
| 11am–12pm | Limited data | 3 | |
| 1pm–2pm | 95.6% | 0.0% | 45 |
| 2pm–3pm | 87.5% | 0.0% | 48 |
| 3pm–4pm | 78.6% | 2.8% | 72 |
| 4pm–5pm | 82.1% | 1.5% | 199 |
| 5pm–6pm | 72.2% | 0.0% | 180 |
| 6pm–7pm | Limited data | 2 | |
| 8pm–9pm | Limited data | 10 | |
| 9pm–10pm | 82.9% | 0.9% | 432 |
| 10pm–11pm | 76.9% | 0.7% | 280 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to GSP
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 | 28 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 72.9% | -10.8 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 69.8% | -13.9 pts | 0.0% | 245 |
| All other days | 83.7% | — | 1.2% | 994 |
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).