Best time to fly Baltimore to Tampa

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

Best month

September

89.5% on time · 200 flights

Worst month

July

70.1% on time · 260 flights

Month Flights On time Cancelled When late, by
January 207 84% 3.38% 47 min
February 205 85.6% 4.88% 46 min
March 263 76.5% 3.04% 74 min
April 266 78.1% 0.38% 68 min
May 255 76.7% 0.39% 63 min
June 210 77.4% 0.95% 53 min
July 260 70.1% 3.08% 95 min
August 230 79.5% 0.87% 58 min
September 200 89.5% 0% 47 min
October 212 80% 0.47% 43 min
November 203 82.2% 2.96% 53 min
December 210 70.2% 1.9% 64 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.