Best time to fly Austin to Los Angeles

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

Best month

September

91.1% on time · 270 flights

Worst month

July

70.7% on time · 354 flights

Month Flights On time Cancelled When late, by
January 305 86.1% 2.95% 77 min
February 279 84.3% 1.43% 59 min
March 387 87% 0.52% 72 min
April 383 80.3% 0.26% 65 min
May 381 77.5% 1.05% 65 min
June 359 75.4% 0.28% 83 min
July 354 70.7% 1.41% 75 min
August 315 84.5% 0.63% 95 min
September 270 91.1% 0% 51 min
October 347 83.6% 0% 71 min
November 351 75.4% 0.57% 63 min
December 346 83.2% 0% 58 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.