Best time to fly Oakland to Las Vegas

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

Best month

January

84.4% on time · 237 flights

Worst month

June

65.5% on time · 289 flights

Month Flights On time Cancelled When late, by
January 237 84.4% 0% 45 min
February 236 80.4% 0.42% 59 min
March 285 79.4% 1.05% 54 min
April 272 74.5% 0.37% 52 min
May 285 72.2% 1.4% 50 min
June 289 65.5% 0.35% 54 min
July 349 78.6% 1.15% 64 min
August 326 83% 0% 51 min
September 300 80.1% 1% 56 min
October 265 76% 0.38% 47 min
November 245 82.5% 2.04% 65 min
December 248 81.9% 0% 45 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.