Best time to fly Chicago to Tampa

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

Best month

February

87.2% on time · 245 flights

Worst month

July

64.4% on time · 320 flights

Month Flights On time Cancelled When late, by
January 273 79.9% 0% 42 min
February 245 87.2% 0.82% 54 min
March 382 75.4% 2.09% 63 min
April 289 80.6% 2.08% 66 min
May 261 76.2% 0% 57 min
June 288 68.6% 1.04% 65 min
July 320 64.4% 2.5% 59 min
August 253 77% 1.98% 66 min
September 223 84.8% 2.69% 38 min
October 249 86.9% 4.42% 47 min
November 275 86.6% 2.55% 44 min
December 292 77.9% 0.34% 59 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.