Best time to fly Fort Wayne to Chicago

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

Best month

June

75.8% on time · 265 flights

Worst month

December

50.8% on time · 199 flights

Month Flights On time Cancelled When late, by
January 176 62% 2.84% 82 min
February 177 66.7% 0% 120 min
March 222 65.3% 9.91% 113 min
April 271 60.9% 8.12% 113 min
May 278 70.4% 1.08% 108 min
June 265 75.8% 6.42% 105 min
July 208 62.8% 3.85% 85 min
August 204 66% 5.88% 94 min
September 221 74.4% 0.9% 72 min
October 240 62.5% 0% 67 min
November 234 72.6% 9.4% 105 min
December 199 50.8% 5.03% 145 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.