Best time to fly Austin to New York

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

Best month

January

87.6% on time · 322 flights

Worst month

July

66.9% on time · 387 flights

Month Flights On time Cancelled When late, by
January 322 87.6% 4.66% 94 min
February 290 84.8% 4.48% 82 min
March 316 78% 1.9% 77 min
April 340 80.7% 0.59% 60 min
May 387 79.8% 1.03% 102 min
June 377 72% 1.33% 89 min
July 387 66.9% 5.17% 102 min
August 366 73.2% 3.28% 109 min
September 373 87.6% 0% 90 min
October 388 85.1% 1.03% 73 min
November 336 87.3% 0.89% 57 min
December 345 78.7% 1.74% 69 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.