Best time to fly Las Vegas to Houston

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

Best month

January

86.9% on time · 329 flights

Worst month

July

66.5% on time · 376 flights

Month Flights On time Cancelled When late, by
January 329 86.9% 2.43% 45 min
February 309 80.5% 0.32% 45 min
March 346 74.4% 0.29% 45 min
April 332 80.5% 0% 41 min
May 341 72.9% 0% 47 min
June 338 69.1% 0.89% 52 min
July 376 66.5% 2.39% 54 min
August 337 79.3% 0% 52 min
September 312 83.6% 0.32% 44 min
October 376 77.3% 0% 46 min
November 360 80.4% 0.83% 51 min
December 359 75.5% 0% 49 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.