He/She must be accompanied by a guardian you can hire at an airport or the flight attendant (s) can supervise him/her
Yes a 9 year old child can fly alone, but he/she would need to have a personal flight attendant which could be costly (depends on the airline and if he/she is flying domestic or international).
No. I recently saw a news item where 3 children did fly alone. One reason they were able to do this is that the oldest was 16 and in some states the airlines will allow a 16 year old to fly alone. He/she still needs the proper documents and identification as well as a ticket.
they have to be at least 14.
For being the first woman to fly an airplane and fly across the ocean ALONE
In 1921.
1903
1903
Can you fly on airplane with pericarditis
Yes, with special arrangements with the airline and an adult to see them off and pick them up.
They did that in 1903
This would be dependant on where they where flying to. Most airlines have a proceedure to deal with UM's (unaccompanied minors). However, a child aged twelve would not be able to fly from America to the UK without an adult. Therefore you would need to check with the airline to discuss this further with them.
No.