DL1221 MilwaukeeMKE · 05:30 AtlantaATL · 08:33
DL1221 by Delta Air Lines flies from Milwaukee (MKE) to Atlanta (ATL).
scheduled from MKE
⚖ DL1221 typically leaves +5 and lands −23. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −23 min · 0 cancelled · 14 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at MKE and ATL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Milwaukee to Atlanta flights today
same route · Delta Air LinesIf DL1221 is cancelled, these are the other Delta Air Lines nonstop flights from Milwaukee to Atlanta on the same day, with scheduled departure times in MKE local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL1221 actually runs
Pro Flight Search has tracked every published board update for DL1221 across the MKE and ATL boards: schedule changes, gate pushes and actual clocks. Usually lands ~20 min early. Based on 14 confirmed landings · 13/14 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how DL1221 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N900DU, N833DN, N915DU, N870DN.
Board clocks recorded as MKE and ATL published them.
Planning around DL1221? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL1221 Milwaukee to Atlanta on-time performance, measured from the MKE and ATL airport boards.
https://proflightsearch.com/flight/DL1221
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