Originally Posted by Cachaco

I don’t think you are looking in the right place. Directly from Q2 financial reports: CASM 10.92 vs RASM 9.38. Spirit model is based on very low CASM, very high aircraft utilization, neither optimal right now, combined with saturated ATC system that is causing disruptions and delays. Spirit might have a small revenue, identity problem, but an LCC is just that, low cost, when your CASM JUMPS 50% but your revenue only jumps 5-10%, and you can’t use your assets to the max to generate more revenue, there is your problem.

CASM trends:
2017 7.59
2018 7.93
2019 8.12
2020 7.00 (COVID)
2021 8.22
2022 11.37
2023 10.51

Straight from investors website.