Which airline is most reliable for ORD (Chicago) to MIA (Miami)?

The most reliable airline on the ORD to MIA route is Delta Air Lines, with an on-time arrival rate of 78%.

How often are flights delayed from ORD to MIA?

About 27% of flights from ORD to MIA experience delays. 73% arrive on time.

What's the average delay on ORD to MIA flights?

When flights from ORD to MIA are delayed, the average delay is approximately 38 minutes.

ORD → MIA

ORD (Chicago) to MIA (Miami)

ORD (Chicago) to MIA (Miami) flights arrive on time 73% of the time. The most reliable airline on this route is Delta Air Lines at 78%. The average delay is 38 minutes. Delays on this route are most often caused by weather.

Source: Bureau of Transportation Statistics. Updated March 2026.

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ORD → MIA on-time performance by month

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This route is delayed fairly often. About 73% of flights arrive on schedule.

Delays on this route are most often caused by weather.

Airlines are roughly equal on this route — Delta Air Lines leads slightly at 78% vs Southwest Airlines at 75%.

Airline Comparison

Delta Air Lines leads at 78% on time; Southwest Airlines trails at 75%.

ORD Airport MIA Airport

Check the return: MIA → ORD

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Data last updated March 2026. Source: Bureau of Transportation Statistics.