Best time to fly Las Vegas to Baltimore

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

Best month

February

88.7% on time · 278 flights

Worst month

July

66.1% on time · 350 flights

Month Flights On time Cancelled When late, by
January 283 88% 3.18% 44 min
February 278 88.7% 0.72% 44 min
March 320 78.3% 0.94% 52 min
April 334 82.5% 0.3% 52 min
May 325 73.1% 0% 53 min
June 316 70.9% 0.32% 49 min
July 350 66.1% 2% 77 min
August 367 75.2% 0.54% 61 min
September 363 85.4% 0% 61 min
October 396 81.1% 0% 38 min
November 318 87.7% 0.63% 39 min
December 307 81.3% 0.33% 40 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.