Delta Policy on Checked Bags
Now, you're probably wondering about fees - will you have to pay extra for checking a bag? Well, it depends on your ticket type and Delta's policy. If you've got a basic economy ticket, you might have to pay for checked bags, but if you're flying first class, you're probably good to go (no extra fees for you!).
It's kind of like when you go to a restaurant and they have different menus for different tables - Delta has different rules for different types of tickets. And, just like how you might get a free dessert with your meal, some tickets come with free checked bags! But, if you're trying to sneak on an extra bag, you might get charged extra - like ordering an extra side dish that's not on the menu.