Best time to fly Springfield to Dallas/Fort Worth

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

Best month

October

82.5% on time · 558 flights

Worst month

July

71.4% on time · 540 flights

Month Flights On time Cancelled When late, by
January 470 82.4% 6.6% 81 min
February 423 79.9% 2.13% 77 min
March 462 80% 1.73% 79 min
April 491 73% 1.83% 110 min
May 518 73.5% 3.67% 87 min
June 523 71.9% 3.25% 88 min
July 540 71.4% 1.3% 63 min
August 551 78.8% 0.54% 69 min
September 551 78.5% 0.18% 53 min
October 558 82.5% 0.18% 65 min
November 528 81.4% 3.03% 79 min
December 520 78.4% 0.77% 71 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.