Best Time to Fly ATL to GRB: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Green Bay Austin Straubel International
Data through July 2026 · Last updated October 18, 2026
366 flights were scheduled from Atlanta (ATL) to Green Bay (GRB) in the last 12 months, and 76.8% of those that flew arrived on time, 0.8 points below the US average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (87% on time) and July the worst month (65%).
The cancellation rate was 1.9% (US average 1.8%).
ATL to GRB 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 | 76.8% | 44 min | 1.9% | 366 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to GRB
On-time arrival % by scheduled departure hour (local time), 737 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 4 | |
| 10am–11am | Limited data | 2 | |
| 11am–12pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 1 | |
| 3pm–4pm | Limited data | 1 | |
| 7pm–8pm | Limited data | 11 | |
| 8pm–9pm | 80.0% | 0.0% | 41 |
| 9pm–10pm | 72.2% | 1.7% | 475 |
| 10pm–11pm | 82.5% | 0.5% | 201 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL to GRB
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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 29 | ||
| Summer peak (Jun 15 - Aug 15) | 68.0% | -10.1 pts | 0.8% | 124 |
| All other days | 78.1% | — | 1.4% | 570 |
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).