Best time to fly Baltimore to Los Angeles

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

Best month

November

82.8% on time · 134 flights

Worst month

June

50.3% on time · 145 flights

Month Flights On time Cancelled When late, by
January 107 76% 6.54% 35 min
February 113 75.2% 3.54% 59 min
March 143 82.3% 0.7% 104 min
April 141 70.9% 0% 48 min
May 143 77.5% 0.7% 63 min
June 145 50.3% 0% 61 min
July 176 71.2% 3.41% 97 min
August 169 78.6% 0.59% 42 min
September 169 81.4% 0.59% 49 min
October 164 78.7% 0% 37 min
November 134 82.8% 0% 62 min
December 123 66.4% 0.81% 39 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.