Best time to fly Baltimore to Charlotte

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

Best month

November

85% on time · 498 flights

Worst month

July

59.9% on time · 627 flights

Month Flights On time Cancelled When late, by
January 425 84.1% 6.59% 55 min
February 399 81.9% 2.76% 64 min
March 494 82.8% 1.42% 108 min
April 473 81.5% 0.42% 97 min
May 554 79.4% 0.9% 83 min
June 563 74.1% 0.89% 86 min
July 627 59.9% 4.31% 107 min
August 584 76.2% 2.05% 97 min
September 559 83.5% 0.72% 68 min
October 597 80.2% 0.17% 56 min
November 498 85% 1% 64 min
December 518 78.3% 0.19% 81 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.