ORD (Chicago) to ATL (Atlanta) flights arrive on time 75% of the time. The most reliable airline on this route is Alaska Airlines at 79%. The average delay is 49 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.ORD → ATL
ORD (Chicago) to ATL (Atlanta)
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ORD → ATL on-time performance by month
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This route is on time most of the time. About 75% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Airlines are roughly equal on this route — Alaska Airlines leads slightly at 79% vs American Airlines at 75%.
Airline Comparison
Alaska Airlines leads at 79% on time; American Airlines trails at 75%.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.