According to this article, Allegiant is going to charge $35 for carryon bags stored in the overhead bin.
https://www.bizjournals.com/phoenix/morning_call/2012/04/allegiant-air-to-charge-for-carry-on.html?ana=e_phx_rdup
Bringing a bag on an Allegiant Air flight and stowing it in the overhead soon will cost $35.
The airline, which offers flights out of Phoenix-Mesa Gateway Airport, will add the charge for flights booked starting on Wednesday, according to CBS Moneywatch. Smaller items that fit under the seat will be free. . . . . .
The article doesn't say if it's all flights or flights only out of Phoenix-Mesa Gateway Airport.
https://www.bizjournals.com/phoenix/morning_call/2012/04/allegiant-air-to-charge-for-carry-on.html?ana=e_phx_rdup
Bringing a bag on an Allegiant Air flight and stowing it in the overhead soon will cost $35.
The airline, which offers flights out of Phoenix-Mesa Gateway Airport, will add the charge for flights booked starting on Wednesday, according to CBS Moneywatch. Smaller items that fit under the seat will be free. . . . . .
The article doesn't say if it's all flights or flights only out of Phoenix-Mesa Gateway Airport.