Best time to fly Albany to Chicago

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

Best month

May

87.7% on time · 387 flights

Worst month

July

65.8% on time · 317 flights

Month Flights On time Cancelled When late, by
January 185 76.5% 2.7% 58 min
February 195 76.9% 0% 58 min
March 268 74.7% 4.1% 68 min
April 322 81.5% 2.8% 91 min
May 387 87.7% 1.55% 63 min
June 406 75.4% 1.48% 98 min
July 317 65.8% 2.21% 82 min
August 313 73.5% 1.92% 84 min
September 332 78.8% 0.3% 54 min
October 346 78% 0.29% 50 min
November 303 79.3% 3.96% 67 min
December 244 69.3% 2.46% 88 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.