Best time to fly Harlingen/San Benito to Houston

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

Best month

January

90.3% on time · 192 flights

Worst month

July

70.5% on time · 229 flights

Month Flights On time Cancelled When late, by
January 192 90.3% 3.13% 63 min
February 182 86.3% 0% 39 min
March 198 73.7% 6.06% 63 min
April 194 77.8% 0% 61 min
May 197 74.6% 0% 48 min
June 201 70.7% 1% 58 min
July 229 70.5% 1.75% 63 min
August 227 83.1% 0.44% 72 min
September 223 89.6% 0.45% 46 min
October 238 82.7% 0% 41 min
November 219 87.2% 0% 67 min
December 226 84.4% 0.44% 70 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.