How can a private pilot fly more for less money?
In the US, the first is illegal, it is called “holding out to the public” you cannot do this as a private pilot. the second is legal as he is paying his/her pro rata share. For charity flights refer to§ 61.113 (d) 61.113 Private pilot privileges and limitations: Pilot in command. (a) Except as provided in paragraphs (b) through (g) of this section, no person who holds a private pilot certificate may act as pilot in command of an aircraft that is carrying passengers or property for compensation or hire; nor may that person, for compensation or hire, act as pilot in command of an aircraft. (b) A private pilot may, for compensation or hire, act as pilot in command of an aircraft in connection with any business or employment if: (1) The flight is only incidental to that business or employment; and (2) The aircraft does not carry passengers or property for compensation or hire. *****(c) A private pilot may not pay less than the pro rata share of the operating expenses of a flight with passe