Best time to fly Miami to Richmond

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

Best month

September

83.3% on time · 60 flights

Worst month

July

56.9% on time · 66 flights

Month Flights On time Cancelled When late, by
January 99 67.7% 6.06% 76 min
February 84 78.6% 0% 47 min
March 118 70.3% 4.24% 66 min
April 93 75.3% 0% 57 min
May 91 71.1% 1.1% 58 min
June 85 60.7% 0% 104 min
July 66 56.9% 1.52% 73 min
August 63 64.5% 1.59% 140 min
September 60 83.3% 0% 136 min
October 62 80.3% 1.61% 51 min
November 82 76.5% 1.22% 104 min
December 93 70.7% 0% 46 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.