About fourteen years ago I was flying from KSFO to KDEN to pick up my 10 weeks on the airshow circuit in Hap Arnold's C-41 (DC-3)
As I got onto the 737 (I don't know which model, but it had a pretty neat decal on the VS), I looked into the cockpit, saw steam gages and a guy who looked to be about 19 in the left seat.
On landing in KDEN, after a flight that was CAVU all the way, I chatted him up and found that he had almost 2,000 hrs. and that he thought that he had a pretty cool gig...
I don't fly Frontier anymore.