On-demand charter and jet cards are two different methods of accessing private jet travel. On-demand charter refers to the ad-hoc hiring of a private jet for a specific trip, with customers paying for each flight individually based on the aircraft type, distance, and other variables. In contrast, a jet card is a pre-paid program that allows individuals or companies to purchase flight hours in advance, typically offering guaranteed availability, a fixed hourly rate, and streamlined booking processes, making it a convenient option for frequent flyers.