Answer:
According to the airline industry, a passenger is classed as an adult at 16 years of age. We provide travel insurance for under 18s without a minimum age limit, meaning teenagers and children can get travel insurance that covers them for unaccompanied Single Trip holidays.
Children younger than 16 can still legally travel unaccompanied, but there are usually specific rules and procedure that need to be followed. Not all airlines will accept unaccompanied children younger than 14 years on their flights. With a Holiday Extras Annual Travel Insurance policy, anyone under under 18 must be insured on a policy with the adult they're travelling with.