How often are LAS to MDW flights on time?

Flights from Las Vegas (LAS) to Chicago (MDW) arrive on time 80% of the time across 18,059 flights of official data.

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

Southwest Airlines has the best on-time record on this route at 80% across 16,990 flights.

Route reliability

Flights from Las Vegas to Chicago arrive on time 80% of the time across 18,059 flights. Here’s how each airline really performs.

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On-time rate

18,059 flights

Airline	On-time	Flights
Southwest Airlines	80%	16,990
Frontier Airlines	78%	1,069

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

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Score real LAS–MDW flights on reliability, weather, and connection safety — not just price.

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