MKE (Milwaukee) to ATL (Atlanta) flights arrive on time 89% of the time. The most reliable airline on this route is Southwest Airlines at 92%. The average delay is 87 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.MKE → ATL
MKE (Milwaukee) to ATL (Atlanta)
MKE → ATL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 89% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Southwest Airlines is significantly more reliable on this route at 92% on time vs Frontier Airlines at 73%.
Airline Comparison
Southwest Airlines leads at 92% on time; Frontier Airlines trails at 73%.
Accurate?
Good to know
Departing from MKE
79% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. MKE has long runway queues.
TSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at ATL
80% on timeWhen flights into ATL are late, the average delay is 72 minutes. Build buffer if you have ground plans.
If connecting at ATL: TSA is ~27 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of MKE? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.