Best time to fly Los Angeles to Austin

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

Best month

September

93.7% on time · 270 flights

Worst month

May

71.1% on time · 381 flights

Month Flights On time Cancelled When late, by
January 304 80.7% 2.96% 55 min
February 280 80.8% 1.43% 47 min
March 387 71.4% 0.26% 55 min
April 383 80.3% 0.26% 71 min
May 381 71.1% 0.79% 78 min
June 359 72.6% 0.28% 59 min
July 355 76.1% 1.69% 73 min
August 314 86.5% 0.64% 67 min
September 270 93.7% 0% 111 min
October 348 84.7% 0% 74 min
November 350 72.5% 0.86% 68 min
December 345 75.1% 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.