I'm still not really sold on Frontier despite the low all in prices I will say.

This will be my 3rd trip since the "conversion". The 2 previous trips were fine, but ... as soon as there is a cancellation or a significant delay, I'm completely expecting to be screwed - "We can rebook you on the next available flight - which is 3 days from now".

This is where AA, UA, and Delta excel (IMHO). If they can't get me to where I need to go on their metal (which is unlikely except in smaller 1 hub service towns), they will (after some b****ing and moaning) get me on another carrier. Frontier won't do this (nor will Spirit & Allegiant).

For what you pay, the service seems great to me, but any trip with time constraints (business/funeral/wedding/cruise) ... I'd be really hesitant. Refunding my airfare doesn't do a whole hell of a lot of good when I have to book a same day ticket on Delta or United for $700. Still though, as I said, my RT cost on F9 was $180 to where I am going (with everything). UA was $425+ (and this is for Thanksgiving). I just wish F9 would do better in irregular ops.