I flew Frontier to Orlando last spring and had the same question about backpacks. From what I experienced, yes, a backpack counts as your free personal item — as long as it’s small enough to fit under the seat. Mine was just a regular school-sized backpack, and it slid right in with no problem. The time I got into trouble was when I tried to pack it like a carry-on with clothes and shoes… the gate agent flagged it, and I had to pay extra on the spot. Since then, I always double-check the size limits before flying. When I’ve needed to confirm baggage details or even adjust a booking, I’ve just called 844-734-0813. They’re super quick to help with questions, cancellations, or flight changes. Honestly, it’s saved me from paying unnecessary fees more than once.
