Most airlines are charging for checked bags, but starting today, one discount air carrier will begin charging for some carry-on bags.

KYW’s Jim Melwert reports Spirit Airlines is now charging for carry-on bags that have to be stowed in the overhead compartments.

Spokeswoman Misty Pinson:

“The whole idea behind Spirit’s philosophy is that we give the customers the purchasing power, and they have the power to pick and choose what options they do and don’t want to pay for.”

Bags that fit under the seat will be free, and there’s no charge for purses, laptops or umbrellas. But any bag headed to the overhead area will cost $30 if you pay in advance. If you wait until you get to the gate, you’ll have to cough up $45.