Via Upgrade: Travel Better, Spirit Air is introducing carry-on baggage fees. They say they’ll measure the size of carry-ons, and those deemed too big to fit under the seat will be charged a fee for use of the overhead.
Presumably someone with a small enough carryon could still use the overhead space for free, even though the narrative is that it’s a fee for overhead space, in reality it’s a fee based on size of carry-on.
Spirit claims they’ve more than offset this by lowering their airfares, but anyone who understands airline pricing understands that this isn’t a meaningful statement.
Meanwhile, anyone who wants can have their checked baggage fees waived for a year on United, Continental, and others.