MDW (Chicago) to ATL (Atlanta) flights arrive on time 82% of the time. The most reliable airline on this route is Delta Air Lines at 87%. The average delay is 73 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.MDW → ATL
MDW (Chicago) to ATL (Atlanta)
MDW → ATL on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
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This route is on time most of the time. About 82% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Delta Air Lines is significantly more reliable on this route at 87% on time vs Frontier Airlines at 71%.
Airline Comparison
Delta Air Lines leads at 87% on time; Frontier Airlines trails at 71%.
Accurate?
Good to know
Departing from MDW
78% on timeTSA is currently ~25 min. Best time: 4 AM (about 5 min).
Arriving at ATL
83% on timeWhen flights into ATL are late, the average delay is 68 minutes. Build buffer if you have ground plans.
If connecting at ATL: TSA is ~24 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated April 2026. Source: Bureau of Transportation Statistics.