Best time to fly Minneapolis to San Antonio

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

Best month

May

88.4% on time · 87 flights

Worst month

December

59.7% on time · 79 flights

Month Flights On time Cancelled When late, by
January 57 69.6% 1.75% 55 min
February 50 82% 0% 53 min
March 58 82.1% 3.45% 87 min
April 74 73% 0% 54 min
May 87 88.4% 0% 49 min
June 83 76.3% 2.41% 47 min
July 85 75% 1.18% 57 min
August 82 72.8% 1.22% 108 min
September 77 71.1% 0% 53 min
October 84 82.1% 0% 58 min
November 76 80% 1.32% 80 min
December 79 59.7% 2.53% 62 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.