Spirit Airlines provide a convenient UMNR service for minors traveling alone. Minors flying on Spirit Airlines need specific documents depending on their age when they are traveling . 

• Valid Passport of your child

•  Valid travel visa

• Completed and signed unaccompanied minor form

• Details like the name and contact number of the person picking up the child at the destination

• Valid photo ID proof of the person who will pick up the child to match the identities.

For more info about Spirit Airlines Unaccompanied Minor Policy, visit official website or visit here-