Best time to fly Denver to Colorado Springs

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

Best month

November

86.5% on time · 426 flights

Worst month

July

58.4% on time · 466 flights

Month Flights On time Cancelled When late, by
January 387 79.3% 1.29% 63 min
February 346 82.9% 0.29% 67 min
March 388 80.2% 1.03% 73 min
April 362 81.2% 0% 58 min
May 428 76.8% 0.23% 60 min
June 436 68.9% 0.23% 64 min
July 466 58.4% 3.65% 80 min
August 466 64% 1.07% 78 min
September 443 79% 0% 55 min
October 450 81.6% 0% 48 min
November 426 86.5% 7.98% 43 min
December 441 75.9% 1.13% 81 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.