Atlanta (ATL) to Milwaukee (MKE) flights
Delta Air Lines flies nonstop from Hartsfield Jackson Atlanta International Airport to General Mitchell International Airport, with about 43 flights a week in July 2026. The 669-mile flight takes about 1h 58m gate to gate.
- Distance
- 669 mi · 1,077 km
- Flight time
- 1h 58m
- Airlines
- 1
- Seats filled
- 75%
Airlines flying ATL to MKE
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 43 | Boeing 737-900ER, Boeing 737-800, Airbus A321 | 282,028 | 1h 58m |
| Frontier AirlinesSeasonal or ended | n/a | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 5,848 | 2h 10m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
ATL to MKE flight schedule
7 flight numbers flew this route in August 2026, 7 of them almost daily. The first usually leaves at 8:15am and the last at 10:50pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| DL 2999Delta Air Lines | 8:15am | 9:16am | 31 | 92% |
| DL 1151Delta Air Lines | 10:44am | 11:45am | 31 | 89% |
| DL 1246Delta Air Lines | 12:57pm | 1:54pm | 22 | 89% |
| DL 2152Delta Air Lines | 2:09pm | 3:08pm | 21 | 84% |
| DL 1206Delta Air Lines | 3:15pm | 5:38pm | 31 | 74% |
| DL 2388Delta Air Lines | 7:05pm | 8:09pm | 31 | 66% |
| DL 1268Delta Air Lines | 10:50pm | 11:53pm | 31 | 81% |
Is ATL to MKE on time?
From September 2025 to August 2026, 83% of 2,264 flights arrived within 15 minutes of schedule and 1.9% were cancelled. Flights leaving around 8am were the most punctual (90%), those around 7pm the least (72%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,202 | 84% | 10 min | 2% |
| Frontier Airlines | 62 | 53% | 21 min | 0% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 8am to 9am | 370 | 90% | |
| 9am to 10am | 55 | 79% | |
| 10am to 11am | 290 | 86% | |
| 12pm to 1pm | 180 | 90% | |
| 1pm to 2pm | 135 | 88% | |
| 2pm to 3pm | 114 | 86% | |
| 3pm to 4pm | 159 | 86% | |
| 4pm to 5pm | 211 | 75% | |
| 6pm to 7pm | 71 | 71% | |
| 7pm to 8pm | 288 | 72% | |
| 10pm to 11pm | 319 | 81% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 195 | 28,197 | |
| September 2025 | 188 | 23,127 | |
| October 2025 | 203 | 25,482 | |
| November 2025 | 174 | 20,841 | |
| December 2025 | 177 | 21,090 | |
| January 2026 | 160 | 18,388 | |
| February 2026 | 162 | 20,114 | |
| March 2026 | 175 | 23,097 | |
| April 2026 | 188 | 24,568 | |
| May 2026 | 214 | 27,271 | |
| June 2026 | 197 | 28,638 | |
| July 2026 | 192 | 27,439 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.