Best time to fly Baltimore to Norfolk

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

Best month

January

88.1% on time · 244 flights

Worst month

July

57.8% on time · 269 flights

Month Flights On time Cancelled When late, by
January 244 88.1% 3.69% 62 min
February 223 85.9% 1.35% 56 min
March 248 74.7% 2.02% 47 min
April 240 78.3% 0% 46 min
May 247 78% 0.4% 52 min
June 271 71.3% 1.11% 56 min
July 269 57.8% 2.23% 58 min
August 280 73.2% 1.07% 50 min
September 274 86.9% 0% 39 min
October 289 83.3% 0.35% 37 min
November 238 82.7% 0.42% 47 min
December 247 72.9% 0% 42 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.