ON TIMEBOARD

DL 1246 on time

Delta Air Lines 1246: Atlanta to Milwaukee at 12:53 p.m.; Milwaukee to Atlanta at 2:04 p.m. (past 12 months). Figures below the title are for ATL → MKE, its busiest leg

On time
89%
266 flights · likely 84–92%
Cancelled
0.8%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+41 min
average delay
Similar flights
89%
DL, same route & hour

About 1 in 9 DL 1246 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (11%); 0.8% were cancelled. The typical flight landed 7 minutes early.

DL 1246: ATL → MKE

Scheduled to leave Atlanta at 12:53 p.m. local time. Over the past year it arrived on time 89% of the time (266 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

40%70%100%Aug 2025: 77% on time (31 flights)77AugSep 2025: 97% on time (30 flights)97SepOct 2025: 90% on time (31 flights)90OctNov 2025: 93% on time (30 flights)93NovDec 2025: 71% on time (31 flights)71DecJan 2026: 88% on time (17 flights)88JanFeb 2026: too few flights (11 flights)FebApr 2026: 72% on time (18 flights)72AprMay 2026: 90% on time (30 flights)90MayJun 2026: 92% on time (24 flights)92JunJul 2026: 86% on time (22 flights)86JulAug 2026: 100% on time (22 flights)100Aug

By day of week

DayFlightsOn time
Monday4180%
Tuesday4190%
Wednesday4198%
Thursday4085%
Friday4090%
Saturday3692%
Sunday2785%

Why it was late

Airline (crew, maintenance, ops) 64%Air traffic & airport (NAS) 20%Late inbound plane 15%

All flights ATL → MKE · Connecting off DL 1246? Check the risk

DL 1246: MKE → ATL

Scheduled to leave Milwaukee at 2:04 p.m. local time. Over the past year it arrived on time 84% of the time (266 flights), in line with other DL flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Aug 2025: 84% on time (31 flights)84AugSep 2025: 97% on time (30 flights)97SepOct 2025: 87% on time (31 flights)87OctNov 2025: 77% on time (30 flights)77NovDec 2025: 77% on time (31 flights)77DecJan 2026: 88% on time (17 flights)88JanFeb 2026: too few flights (11 flights)FebApr 2026: 78% on time (18 flights)78AprMay 2026: 87% on time (30 flights)87MayJun 2026: 88% on time (24 flights)88JunJul 2026: 73% on time (22 flights)73JulAug 2026: 86% on time (22 flights)86Aug

By day of week

DayFlightsOn time
Monday4178%
Tuesday41100%
Wednesday4193%
Thursday4080%
Friday4078%
Saturday3681%
Sunday2778%

Why it was late

Airline (crew, maintenance, ops) 41%Late inbound plane 28%Air traffic & airport (NAS) 22%Severe weather 9%

All flights MKE → ATL · Connecting off DL 1246? Check the risk

Questions

How often is DL 1246 from ATL to MKE late?

Delta Air Lines 1246 from Atlanta, GA to Milwaukee, WI arrived 15 or more minutes late, was diverted or was cancelled on 11% of 266 scheduled flights between September 2025 and August 2026. 0.8% were cancelled.

How often is DL 1246 from MKE to ATL late?

Delta Air Lines 1246 from Milwaukee, WI to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 16% of 266 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.