Originally Posted by PowerMan

This seems likely to me (on the outside looking in).
Frontier is assumed to IPO first quarter of 2017. Kirby says more connectivity wanted in ORD and something about DEN being the most profitable hub (2 of the 3 F9 bases). SNB aircraft are needed, and 61 of 65 -700 orders are deferred. How many airframes does F9 have?...61!
Plus you get gates, trained crew, and aircraft already on order. All for probably significantly less than just the 61 -700 airframes.