Best time to fly Miami to Norfolk

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

Best month

November

89.1% on time · 113 flights

Worst month

July

64.1% on time · 66 flights

Month Flights On time Cancelled When late, by
January 99 75% 7.07% 74 min
February 84 85.4% 1.19% 41 min
March 119 64.7% 2.52% 67 min
April 93 75.3% 0% 50 min
May 93 66.7% 0% 54 min
June 92 70.7% 0% 59 min
July 66 64.1% 3.03% 80 min
August 93 68.5% 1.08% 66 min
September 63 81% 0% 111 min
October 62 86.9% 0% 56 min
November 113 89.1% 2.65% 142 min
December 108 77.8% 0% 68 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.