Best time to fly Los Angeles to San Antonio

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

Best month

September

90.3% on time · 321 flights

Worst month

May

80.6% on time · 334 flights

Month Flights On time Cancelled When late, by
January 287 85.2% 1.39% 66 min
February 253 82.2% 0% 75 min
March 318 82.6% 0% 66 min
April 327 87.8% 0% 71 min
May 334 80.6% 0.9% 76 min
June 332 82.3% 0.6% 68 min
July 379 80.6% 1.58% 75 min
August 356 85.4% 0% 48 min
September 321 90.3% 0% 50 min
October 347 87.8% 0.29% 77 min
November 348 82.1% 0.57% 69 min
December 366 84.9% 0.55% 57 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.