I think only Spirit and Frontier can. You will save with them buying at the counter
Online is the best ...buying at the airport is not good ..may not get flight or they put you on standby
At least 6 weeks prior
Buy it online much better n cheap.
I would recommend buying prior your arrival to the airport
Many years ago was cheaper to buy at the airport. Today the flights are full and you may not find seats available.
Online
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