ATL (Atlanta) to MDW (Chicago) flights arrive on time 80% of the time. The most reliable airline on this route is Delta Air Lines at 85%. The average delay is 67 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.ATL → MDW
ATL (Atlanta) to MDW (Chicago)
ATL → MDW on-time performance by month
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This route is on time most of the time. About 80% 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 85% on time vs Frontier Airlines at 65%.
Airline Comparison
Delta Air Lines leads at 85% on time; Frontier Airlines trails at 65%.
Accurate?
Good to know
Departing from ATL
83% on timeExpect ~16 min sitting on the taxiway after your gate pushes back. ATL has long runway queues.
TSA is currently ~29 min. Best time: 4 AM (about 5 min).
Arriving at MDW
78% on timeWhen flights into MDW are late, the average delay is 56 minutes. Build buffer if you have ground plans.
If connecting at MDW: TSA is ~14 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.