Bag Backpack

Bag Backpack
Can I bring a school backpack and a duffle bag onto a us airways flight?

I don’t want to check anything if I can avoid it. The duffle bag is ruffly 10x10x21 inches and the backpack is 17x13x11 inches. I’m flying from Phoenix to Charlotte and then from Charlotte to Guatemala City. I’m not sure if it matters if it’s an international flight.
Thanks

usually they will allow you one carry on size bag and

a purse, computer, briefcase, or small tote

so probably but check the airlines website

or call them to be sure.

Hunting Bag (Backpack with Stool) by Halti