For a domestic flight: nothing. For an international destination you'll need both parents signed permission.
No.
It is possible in some states but you would generally need to be legally emancipated since you are currently a minor. Contact a family lawyer in your state for more information.
If the child's parents consent to the friend's parents to be appointed the legal guardians. The friend's parents would need to consent and then be appointed by the court.
More info please - how old a child and for what reason? Adoption? Child Supoort? Juvenile crime? ????
The child is considered a runaway if refusing to live at home. The emancipation need not be approved by them. As for the child support, that is strictly interpreted by the court. see link
The family friend would need to apply for guardianship, or go through the training to be a foster family.
As long as the child is a minor, yes. They still need a roof over their head and food etc.
No. You are a minor with a child. Nothing more nothing less. To be emancipated you need to prove to a judge that you can support yourself and your child.
a friend indeed is a friend in need
Need clarification on the question. Friend and his 15 year old child mother?
You need to file a motion with the court to emancipate the minor and modify child support. see link for applicable laws.
If you are a minor you pretty much have to go with your parent if they move. You don't need permission from your child's father, although he might get angry and try to take you to court over it.