Best time to fly Chicago to Sarasota/Bradenton

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full MDW to SRQ record →

Best month

September

87.3% on time · 64 flights

Worst month

May

64.3% on time · 84 flights

Month Flights On time Cancelled When late, by
January 64 78.1% 0% 27 min
February 81 77.8% 0% 53 min
March 159 70.6% 3.14% 49 min
April 99 75.5% 1.01% 53 min
May 84 64.3% 0% 49 min
June 107 77.4% 0.93% 50 min
July 92 68.5% 1.09% 51 min
August 69 74.2% 2.9% 41 min
September 64 87.3% 1.56% 38 min
October 62 72.7% 11.29% 34 min
November 65 85.9% 1.54% 60 min
December 67 70.1% 0% 41 min

What a seasonal pattern can and cannot tell you

Months differ for reasons that repeat — summer thunderstorms in the American interior, winter fog and de-icing in northern Europe, school holidays filling every seat and leaving no slack in the schedule. Those are real and they come back each year.

What the pattern cannot do is forecast a particular flight. A quiet month has late days and a bad month has punctual ones. Treat this as a way to choose between two dates you are indifferent about, not as a promise.