Best time to fly Boston to Fort Myers

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

Best month

November

81.6% on time · 390 flights

Worst month

December

59.3% on time · 504 flights

Month Flights On time Cancelled When late, by
January 422 60.5% 2.61% 61 min
February 526 66.7% 6.27% 73 min
March 655 66.8% 2.44% 64 min
April 586 78.2% 0.17% 52 min
May 366 81.1% 0% 57 min
June 242 74.5% 1.24% 62 min
July 275 67.3% 3.64% 69 min
August 236 74.6% 2.97% 69 min
September 226 81.4% 2.21% 58 min
October 272 79.4% 4.41% 48 min
November 390 81.6% 1.03% 82 min
December 504 59.3% 1.19% 65 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.