How do I book an unaccompanied minor flight on Asiana Airlines? Passengers planning to book an Asiana unaccompanied minor flight . flying with Asiana Airlines can request the service online or Booking through Customer Service . According to Asiana unaccompanied minor policy, children aged 5 to 11 on the international routes and 5 to 12 for the domestic routes if they fly alone. for more info read the blog mentioned at link- https://tinyurl.com/asiana-airlines-umnr-policy # asianaUnaccompaniedminorpolicy # asianaUnaccompanied Minor Fee # asianaUMNR Policy