Best Time to Fly GSO to ATL: On-Time Stats by Hour & Airline
Piedmont Triad International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 89.0% of Greensboro/High Point (GSO) to Atlanta (ATL) flights arrived on time (2,754 scheduled flights). That is 11.3 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
October has been the best month (92% on time) and Sunday the weakest day of the week (85%).
2.1% of flights were cancelled, versus 1.8% nationally.
GSO to ATL 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 |
|---|---|---|---|---|
| Delta Air Lines | 89.0% | 93 min | 2.1% | 2,754 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GSO to ATL
On-time arrival % by scheduled departure hour (local time), 5,349 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.5% | 1.8% | 494 |
| 6am–7am | 93.2% | 1.4% | 627 |
| 7am–8am | 89.3% | 1.5% | 325 |
| 8am–9am | 91.4% | 1.2% | 508 |
| 9am–10am | Limited data | 11 | |
| 10am–11am | 91.8% | 1.2% | 656 |
| 11am–12pm | 90.9% | 0.0% | 33 |
| 12pm–1pm | 89.2% | 1.3% | 601 |
| 1pm–2pm | 85.5% | 1.8% | 56 |
| 2pm–3pm | 86.8% | 0.8% | 634 |
| 3pm–4pm | Limited data | 6 | |
| 4pm–5pm | 78.2% | 1.6% | 317 |
| 5pm–6pm | 88.2% | 1.2% | 412 |
| 6pm–7pm | 80.6% | 2.4% | 290 |
| 7pm–8pm | 78.6% | 4.3% | 234 |
| 8pm–9pm | 86.3% | 3.5% | 145 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GSO to ATL
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) | 87.4% | -2.4 pts | 0.0% | 103 |
| Christmas & New Year (Dec 20 - Jan 3) | 93.0% | +3.2 pts | 1.7% | 116 |
| Summer peak (Jun 15 - Aug 15) | 84.2% | -5.6 pts | 2.2% | 1,007 |
| All other days | 89.8% | — | 1.4% | 4,123 |
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).