Best time to fly Des Moines to St. Petersburg

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 28 82.1% 0% 113 min
February 38 64.9% 0% 122 min
March 55 65.4% 5.45% 62 min
April 36 80.6% 0% 77 min
May 37 83.8% 0% 38 min
June 45 75% 0% 88 min
July 53 78.8% 1.89% 121 min
August 37 80.6% 2.7% 91 min
September 18 72.2% 0% 80 min
October 17 68.8% 5.88% 37 min
November 26 76% 3.85% 74 min
December 35 66.7% 2.86% 112 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.