According to Delta Airlines, if your child is under 2, there is no need to book an additional ticket. However, you can call customer service to book a separate seat for baby comfort. Here are some steps to add an infant to their flights.

1. Call Delta Air Lines Customer Service.
2. When you stay connected.
3. Click on 2 to learn more about the process.
4. Press three buttons to gather information on Delta Airlines Infant policy.
5. Click 4 to confirm the Delta baby seat.

To know more about the Delta Airlines Infant Policy, you can visit the Airlinesunaccompaniedminor website.