Best time to fly Dallas/Fort Worth to Baltimore

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

Best month

February

79% on time · 81 flights

Worst month

July

54.5% on time · 143 flights

Month Flights On time Cancelled When late, by
January 95 69.4% 10.53% 60 min
February 81 79% 0% 45 min
March 99 57.9% 3.03% 63 min
April 116 75.7% 0.86% 91 min
May 121 71.8% 3.31% 65 min
June 113 62.6% 4.42% 90 min
July 143 54.5% 4.9% 69 min
August 120 69.3% 4.17% 74 min
September 106 75% 1.89% 58 min
October 109 77.8% 0% 40 min
November 107 72.4% 1.87% 72 min
December 119 70.6% 0% 73 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.