Best time to fly Chicago to Albany

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

Best month

May

84% on time · 387 flights

Worst month

December

63% on time · 244 flights

Month Flights On time Cancelled When late, by
January 185 70.2% 2.16% 72 min
February 195 75.4% 0% 58 min
March 268 74.7% 4.1% 82 min
April 322 78.9% 2.8% 73 min
May 387 84% 1.29% 56 min
June 407 76.6% 2.21% 62 min
July 317 72% 1.58% 73 min
August 312 73.1% 1.28% 65 min
September 333 81.3% 0% 45 min
October 345 78.6% 0% 40 min
November 303 77.4% 3.63% 66 min
December 244 63% 2.05% 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.