I will second jebr's observation that flights to Las Vegas have a fair amount of onboard sales, mainly alcohol, to "get in the mood" for Sin City ahead of time. I have seen this no matter the departing airport; Cleveland, Akron-Canton, Pittsburgh, Detroit, and Columbus, all of which I've flown out of on either Frontier or Spirit.

iahphx... I agree the baggage fees are out of sight on F9 and NK; I think you are absolutely right that both would do better with lower baggage fees to encourage higher utilization. If all of their customers were like el cheapo me there is no way they could survive.

I still have people ask me after all of these years of flying both NK and F9 if I feel safe, because they just can't believe that planes can be properly maintained AND fly people for $28 roundtrip.