Atlanta (ATL) to Green Bay (GRB): On-Time Performance
Data through May 2026
The calendar drives reliability on ATL–GRB. October 2024 flights landed on schedule 90% of the time, but July 2024 dropped to 48% — a gap of 42 points. Across the full period the route averages 75% on-time against a national 78%.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 1.0
- last 12 months
- Duration
- 2h 9m
- scheduled
- Distance
- 774 mi
Monthly on-time trend
Best time to fly from ATL to GRB
Aim for departures around 10 p.m. (78% on-time); avoid 9 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 18 min |
| Tuesdaybest | 85% | 10 min |
| Wednesday | 82% | 10 min |
| Thursday | 72% | 17 min |
| Friday | 69% | 19 min |
| Saturday | 76% | 18 min |
| Sunday | 69% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations53%
- National airspace system15%
- Weather6%
Frequently asked questions
- How often are flights from ATL to GRB delayed?
- 25% of ATL–GRB flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- What is the best time of day to fly from ATL to GRB?
- Departures around 10 p.m. have the best record (78% on-time), while departures around 9 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to GRB?
- The scheduled ATL–GRB flight time averages 2h 9m over 774 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are ATL to GRB flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from ATL to GRB?
- July 2024 was the roughest month in this dataset, with only 48% of arrivals on time. The best was October 2024 at 90%. If your dates are flexible, that 42-point gap is worth planning around.
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Based on 737 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.