Green Bay Austin Straubel International (GRB) Delays and On-Time Departures
Green Bay, WI · ranked 142nd of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
81.3% of the 4,824 flights scheduled to depart Green Bay (GRB) in the last 12 months left on time, 3.9 points above the US average of 77.4%.
That ranks 142nd of 333 US airports tracked on this site, with 3.2% of departures cancelled.
Among airlines at Green Bay (GRB), Republic Airways left on time most often (87.2%).
Over 24 months, Saturday was the most reliable day (85% on time) and December the worst month (71%).
Best time of day to fly out of Green Bay (GRB)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.6% | 1.7% | 887 |
| 6am–7am | 91.8% | 1.6% | 1,725 |
| 7am–8am | 87.8% | 1.7% | 585 |
| 8am–9am | 86.7% | 1.1% | 351 |
| 9am–10am | 83.9% | 1.4% | 288 |
| 10am–11am | 80.3% | 2.6% | 661 |
| 11am–12pm | 79.9% | 1.2% | 759 |
| 12pm–1pm | 84.4% | 1.1% | 616 |
| 1pm–2pm | 74.0% | 4.0% | 304 |
| 2pm–3pm | 74.1% | 2.7% | 147 |
| 3pm–4pm | 74.9% | 4.4% | 429 |
| 4pm–5pm | 75.5% | 1.1% | 725 |
| 5pm–6pm | 70.7% | 1.9% | 1,008 |
| 6pm–7pm | 70.9% | 6.7% | 327 |
| 7pm–8pm | 77.1% | 12.7% | 55 |
| 8pm–9pm | 71.7% | 11.8% | 51 |
| 9pm–10pm | Limited data | 3 | |
Airlines at GRB ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Republic Airways | 87.2% | 75.3% | 6.1% | 165 |
| Delta Air Lines | 85.5% | 86.0% | 1.8% | 556 |
| Envoy Air | 82.4% | 77.7% | 3.5% | 1,384 |
| SkyWest Airlines | 79.6% | 75.2% | 3.2% | 2,713 |
| Frontier Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best day to fly out of GRB
On-time departures by day, 24 months.
Best month to fly out of GRB
On-time departures by month, 24 months.
Holiday travel at Green Bay (GRB)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 71.7% | -11.1 pts | 11.1% | 162 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.3% | -10.5 pts | 4.0% | 301 |
| Summer peak (Jun 15 - Aug 15) | 82.5% | -0.3 pts | 0.9% | 1,502 |
| All other days | 82.8% | — | 2.1% | 6,956 |
Monthly on-time departure trend at GRB
On-time departure % each month, with the 12-month US average for reference.
Routes from Green Bay (GRB)
Every route from GRB with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| GRB → Chicago (ORD) | 72.5% | 4.5% | 2,698 |
| GRB → Detroit (DTW) | 81.3% | 1.9% | 875 |
| GRB → Minneapolis (MSP) | 82.2% | 1.4% | 867 |
| GRB → Atlanta (ATL) | 88.2% | 1.9% | 366 |