About 1 in 8 DL 1151 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (13%); 1.8% were cancelled. The typical flight landed 7 minutes early.
DL 1151: ATL → MKE
Scheduled to leave Atlanta at 10:10 a.m. local time. Over the past year it arrived on time 87% of the time (340 flights), in line with other DL flights on the route at that hour (88%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 77% |
| Tuesday | 46 | 80% |
| Wednesday | 45 | 91% |
| Thursday | 48 | 92% |
| Friday | 49 | 96% |
| Saturday | 48 | 85% |
| Sunday | 51 | 88% |
Why it was late
All flights ATL → MKE · Connecting off DL 1151? Check the risk
DL 1151: MKE → ATL
Scheduled to leave Milwaukee at 12:06 p.m. local time. Over the past year it arrived on time 88% of the time (295 flights), in line with other DL flights on the route at that hour (89%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 44 | 82% |
| Tuesday | 42 | 90% |
| Wednesday | 41 | 95% |
| Thursday | 40 | 95% |
| Friday | 41 | 95% |
| Saturday | 45 | 82% |
| Sunday | 42 | 79% |
Why it was late
All flights MKE → ATL · Connecting off DL 1151? Check the risk
Questions
How often is DL 1151 from ATL to MKE late?
Delta Air Lines 1151 from Atlanta, GA to Milwaukee, WI arrived 15 or more minutes late, was diverted or was cancelled on 13% of 340 scheduled flights between September 2025 and August 2026. 1.8% were cancelled.
How often is DL 1151 from MKE to ATL late?
Delta Air Lines 1151 from Milwaukee, WI to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 12% of 295 scheduled flights between September 2025 and August 2026. 1.0% 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.