I've been baffled as to why there are not non-stops from Denver to Reno, Cincinnati, and Memphis included in Frontier's network.

Cincinnati/Memphis- both served by United and Delta, both have seen large capacity cuts as prior Delta/Northwest hubs, and could attract passengers connecting to the west coast.

Reno- Served by Southworst and United but seems like it could at least handle additional seasonal service on an E-Jet.

Maybe I am missing something, but what are your thoughts about these destinations?