Best time to fly Valparaiso to Dallas/Fort Worth

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

Best month

October

82.7% on time · 221 flights

Worst month

June

54.4% on time · 272 flights

Month Flights On time Cancelled When late, by
January 196 77.5% 11.22% 92 min
February 185 79.2% 2.7% 90 min
March 236 77.3% 2.97% 151 min
April 232 75% 3.02% 98 min
May 277 74% 4.33% 85 min
June 272 54.4% 4.78% 125 min
July 267 69.1% 3.75% 120 min
August 238 64.9% 2.1% 93 min
September 197 81.8% 2.03% 133 min
October 221 82.7% 0.45% 59 min
November 203 78.3% 1.97% 80 min
December 212 74.6% 1.42% 86 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.