Do babies under 2 fly free on Delta?

Yes, if kids are under two years old, they can fly free on domestic flights in their parent’s laps, but Delta Airlines charges 10% of adult fares when infants travel internationally. So feel free if you and your baby travel on Delta Airlines. Additionally, if kids fly internationally, then they need to show required documents like birth certificates, according to Delta Airlines Infant Policy. For more details, visit the Airlinesunaccompaniedminor website.