How often are MDW to LAS flights on time?

Flights from Chicago (MDW) to Las Vegas (LAS) arrive on time 82% of the time across 18,056 flights of official data.

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

Southwest Airlines has the best on-time record on this route at 82% across 16,988 flights.

Route reliability

Flights from Chicago to Las Vegas arrive on time 82% of the time across 18,056 flights. Here’s how each airline really performs.

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On-time rate

18,056 flights

Airline	On-time	Flights
Southwest Airlines	82%	16,988
Frontier Airlines	75%	1,068

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

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

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