How much would I get charged to change one thing in my name?

Like my names correct I just added jr by accident and I wondering how much would would they charge me to take it off

Has to match perfectly with airline tickets.

You have to give airline the exact match of your ID.

Airline will charge if it's not a 100 percent name match and TSA will not allow you through checkpoint without a 100 percent name match. So don't make a mistake it will cost you.

For what? It's an airport...