About 1 in 5 DL 4059 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (22%); 1.2% were cancelled. The typical flight landed 13 minutes early.
DL 4059: DTW → GRB
Scheduled to leave Detroit at 10:00 a.m. local time, operated by SkyWest as OO 4059. Over the past year it arrived on time 78% of the time (251 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 78% |
| Tuesday | 36 | 78% |
| Wednesday | 36 | 67% |
| Thursday | 36 | 86% |
| Friday | 36 | 75% |
| Saturday | 36 | 83% |
| Sunday | 34 | 82% |
Why it was late
All flights DTW → GRB · Connecting off DL 4059? Check the risk
DL 4059: GRB → DTW
Scheduled to leave Green Bay at 11:07 a.m. local time, operated by SkyWest as OO 4059. Over the past year it arrived on time 79% of the time (251 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 78% |
| Tuesday | 36 | 78% |
| Wednesday | 36 | 75% |
| Thursday | 36 | 86% |
| Friday | 36 | 83% |
| Saturday | 36 | 72% |
| Sunday | 34 | 79% |
Why it was late
All flights GRB → DTW · Connecting off DL 4059? Check the risk
Questions
How often is DL 4059 from DTW to GRB late?
Delta Air Lines 4059 from Detroit, MI to Green Bay, WI arrived 15 or more minutes late, was diverted or was cancelled on 22% of 251 scheduled flights between September 2025 and August 2026. 1.2% were cancelled.
How often is DL 4059 from GRB to DTW late?
Delta Air Lines 4059 from Green Bay, WI to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 21% of 251 scheduled flights between September 2025 and August 2026. 0.8% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.