Best time to fly Austin to Newark

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

Best month

May

87.5% on time · 145 flights

Worst month

July

62% on time · 173 flights

Month Flights On time Cancelled When late, by
January 178 86.6% 7.87% 77 min
February 148 84.8% 6.76% 101 min
March 203 67.3% 2.46% 69 min
April 188 81.9% 3.19% 67 min
May 145 87.5% 0% 179 min
June 146 84.7% 0.68% 99 min
July 173 62% 2.31% 126 min
August 159 70.3% 0.63% 71 min
September 159 86% 0.63% 95 min
October 185 66.1% 1.08% 107 min
November 203 70.1% 2.96% 108 min
December 217 64% 2.76% 76 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.