Along with the growth of passenger counts at Denver International Airport over the years has come a dramatic drop in air fares.

Average domestic air fares have declined 45 percent since DIA opened in 1995, according to data released today by the U.S. Department of Transportation.

In 1995, when DIA opened for business, the average domestic fare from the airport was $570.90 (adjusted for inflation to the value of 2016 dollars). In 2016, the average DIA fare was $311.95, according to the figures released…