How often are STL to MDW flights on time?

Flights from St. Louis (STL) to Chicago (MDW) arrive on time 86% of the time across 11,629 flights of official data.

Which airline is most reliable on the STL to MDW route?

Southwest Airlines has the best on-time record on this route at 86% across 11,629 flights.

Route reliability

Flights from St. Louis to Chicago arrive on time 86% of the time across 11,629 flights. Here’s how each airline really performs.

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On-time rate

11,629 flights

Airline	On-time	Flights
Southwest Airlines	86%	11,629

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg MDW → STL.

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