Best time to fly Detroit to New Orleans

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

Best month

May

93.1% on time · 62 flights

Worst month

January

69.7% on time · 66 flights

Month Flights On time Cancelled When late, by
January 66 69.7% 0% 47 min
February 86 90.6% 1.16% 62 min
March 81 90% 1.23% 75 min
April 68 92.6% 0% 21 min
May 62 93.1% 6.45% 38 min
June 54 86.8% 1.85% 52 min
July 71 74.6% 0% 52 min
August 57 75.4% 0% 35 min
September 52 84.6% 0% 93 min
October 93 92.5% 0% 44 min
November 76 85.5% 0% 50 min
December 62 76.3% 4.84% 93 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.