Best time to fly Los Angeles to Phoenix

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

Best month

January

86.3% on time · 1,252 flights

Worst month

July

76.3% on time · 1,234 flights

Month Flights On time Cancelled When late, by
January 1,252 86.3% 0.64% 88 min
February 1,183 84.4% 0.25% 76 min
March 1,364 80.5% 0.44% 55 min
April 1,316 84.5% 0.08% 69 min
May 1,310 83.1% 0% 61 min
June 1,208 80.4% 0.08% 60 min
July 1,234 76.3% 0.97% 68 min
August 1,268 83% 0.32% 66 min
September 1,228 86.1% 0.65% 81 min
October 1,364 82.8% 0.07% 56 min
November 1,325 81% 2.11% 71 min
December 1,323 84.6% 0.3% 61 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.