So you're ready to travel internationally with your child? Regardless of age, all children need a passport to travel outside of the US. Minors under the age of 16 apply for a Child's Passport. Here is an easy guide to applying for your child's passport. What You Need to Apply 1. Completed DS-11 form 2. One 2x2 passport photo 3. Evidence of child's U.S. citizenship 4. Evidence of relationship between child and parent(s)/guardian(s) 5. Parent(s) or guardian(s) identification and photocopy of identification 6. Provide parental consent 7. Application fee Passport Photo You can get a passport photo at most Pharmacy