Terrible Airfare Prices !!!

I need to book several flights from Colorado Springs coming up and I hate to drive to Denver airport. But when I check prices from both airports COS is MUCH higher (2x to 3x) the cost out of Denver. I am willing to pay a little more from COS but this is crazy. Why all of a sudden are prices so bad from COS? I have been checking several times a day for 3 weeks now and no deals. The distance to where I am going is about the same from either airport. Who pays these high prices and how can this COS airport survive?