Best time to fly Las Vegas to Tucson

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

Best month

January

83.8% on time · 112 flights

Worst month

June

62.8% on time · 86 flights

Month Flights On time Cancelled When late, by
January 112 83.8% 0.89% 59 min
February 111 81.1% 0% 39 min
March 128 82.7% 0.78% 48 min
April 109 78% 0% 50 min
May 105 73.3% 0% 53 min
June 86 62.8% 0% 54 min
July 98 73.5% 0% 65 min
August 108 80.6% 0% 56 min
September 111 71.6% 1.8% 56 min
October 124 75.6% 0.81% 55 min
November 127 77.8% 0.79% 55 min
December 126 76.2% 0% 42 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.