Best time to fly Denver to Durango

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

Best month

October

87.8% on time · 371 flights

Worst month

July

68.5% on time · 336 flights

Month Flights On time Cancelled When late, by
January 364 72.5% 0% 71 min
February 331 74.9% 0.91% 65 min
March 372 84.1% 1.88% 65 min
April 367 81.9% 0.54% 93 min
May 391 77.5% 0% 69 min
June 355 73.4% 0.56% 85 min
July 336 68.5% 1.79% 70 min
August 341 73.3% 0.29% 58 min
September 335 84.8% 0% 57 min
October 371 87.8% 0% 88 min
November 355 83.6% 5.07% 80 min
December 371 84% 0% 75 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.