Best time to fly Washington to Austin

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

Best month

October

72.6% on time · 62 flights

Worst month

June

25% on time · 60 flights

Month Flights On time Cancelled When late, by
January 62 66.1% 4.84% 64 min
February 56 51.8% 0% 68 min
March 62 62.9% 0% 61 min
April 60 60% 0% 52 min
May 62 37.1% 0% 66 min
June 60 25% 0% 78 min
July 62 31.1% 1.61% 84 min
August 62 66.1% 0% 50 min
September 60 56.7% 0% 45 min
October 62 72.6% 0% 47 min
November 60 70% 0% 52 min
December 62 58.1% 0% 63 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.