I'd say your memory is quite rough, as F9 is a private company and does not report those numbers, and therefore should not be on the list. Any numbers that have been thrown out regarding F9's margin is purely based on DOT numbers; no one but Frontier execs, Indigo, and the banks they hired have any idea what the real numbers look like. I'm sure F9 is not the best but fairly good, and it's useless to speculate further.