Best time to fly Mission/McAllen/Edinburg to Houston

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

Best month

February

95.3% on time · 44 flights

Worst month

May

62.2% on time · 76 flights

Month Flights On time Cancelled When late, by
January 59 94.8% 1.69% 24 min
February 44 95.3% 0% 38 min
March 57 65.5% 3.51% 56 min
April 65 64.6% 0% 50 min
May 76 62.2% 2.63% 135 min
June 56 83.9% 0% 217 min
July 31 87.1% 0% 166 min
August 31 90.3% 0% 21 min
September 35 88.6% 0% 23 min
October 68 88.2% 0% 99 min
November 90 88.9% 0% 67 min
December 50 84% 0% 171 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.