If you already have a ticket and your bag is a carry on, do you have to pay for anything else when you get to the airport?

You should have little to no other costs once you arrive at the airport. Your airline may charge you for your carry-on luggage. Charges for carry-on bags vary depending on your airline. Contact your airline directly to confirm your carry-on luggage fits the requirements. If you're leaving a car at the airport, there would be a fee for that once you return. And unless you plan to purchase items at the airport concession and retail shops, you should really not incur any other costs. Enjoy your travel experience!

No

No,unless you purchase something