Best time to fly Houston to Pensacola

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

Best month

January

85.6% on time · 110 flights

Worst month

July

48% on time · 104 flights

Month Flights On time Cancelled When late, by
January 110 85.6% 5.45% 72 min
February 95 77.7% 1.05% 58 min
March 65 73.8% 4.62% 73 min
April 60 78.3% 0% 59 min
May 113 66.7% 1.77% 65 min
June 123 59.8% 0% 95 min
July 104 48% 3.85% 87 min
August 96 62.8% 2.08% 57 min
September 90 77.8% 0% 54 min
October 87 77% 0% 52 min
November 59 81.4% 0% 48 min
December 72 66.2% 0% 71 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.