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2,264 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 1–2 pm 90% arrive on time from ATL
Best single flight DL 2999 ATL 08:05 → MKE 09:06 · 91% on time Avoid DL 1206 ATL 16:31 → MKE 17:35 · 75% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
ATL
92
85
87
90
90
89
85
80
75
76
83
90
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
Milwaukee flights leaving ATL 12–1 pm: 1Close ×
DL 1246 ATL 12:53 MKE 13:50 1h 57m 275 88% 1.1% 41 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta 2,202 84% 2.0% 54 min
Frontier 62 – 0.0% 45 min

Dimmed: fewer than 150 flights in the year, too few to rank.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
DL 2999 ATL 08:05 MKE 09:06 91%
DL 1151 ATL 10:50 MKE 11:51 90%
DL 1246 ATL 12:53 MKE 13:50 88%
DL 2152 ATL 14:05 MKE 15:07 84%
DL 1268 ATL 22:55 MKE 23:56 81%
· · ·
DL 1206 ATL 16:31 MKE 17:35 75%
All 8 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Delta ATL MKE 2h 01m 84% 2.0% 2,202 Flying now
Frontier ATL MKE 2h 04m 54% 0.0% 62 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON