Best time to fly Phoenix to Las Vegas

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

Best month

February

85.4% on time · 480 flights

Worst month

June

70.8% on time · 474 flights

Month Flights On time Cancelled When late, by
January 513 82.5% 1.56% 52 min
February 480 85.4% 0% 54 min
March 538 77.8% 0.37% 66 min
April 530 79.1% 0.57% 55 min
May 547 76.5% 0.37% 68 min
June 474 70.8% 0.63% 65 min
July 495 77% 0.4% 63 min
August 464 85% 0.86% 57 min
September 430 82.7% 1.86% 56 min
October 542 77.5% 0% 72 min
November 512 74.3% 4.88% 67 min
December 496 76.8% 0.2% 53 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.