Required Check-In Documents You will receive a wristband for your child to wear in-flight and create a package of boarding documents and ID for your child to use as they travel. At check-in, the accompanying adult must provide the following: Photo ID (license, passport, etc.) Address (as shown on ID)

In 2026, Delta's requirements for a child depend on their age and whether they are accompanied. For infants (under 2), they can fly as a "lap child" for free domestically, but you must provide a birth certificate for age verification. For children aged 5 to 14 traveling alone, Delta's Unaccompanied Minor (UMNR) Program is mandatory. This service costs $150 each way and includes a dedicated escort and a trackable wristband. Children aged 15 to 17 can fly as standard passengers, though the UMNR service is optional for them. For international travel in 2026, Delta requires a valid passport for the child and, crucially, a notarized "Consent to Travel" form signed by both parents if only one parent (or no parent) is traveling. This prevents international custody disputes and is strictly checked at the gate. Parents dropping off a child must also stay at the gate until the plane is officially in the air.