Airline loyalty programs are rewards systems designed to encourage customers to fly with a specific airline. When travelers join these programs, they earn points or miles for every flight they take. These points can be redeemed for free flights, upgrades, or other perks, making it more appealing for frequent flyers to stick with one airline, such as Delta Air Lines or American Airlines. In addition to earning points, members often enjoy exclusive benefits like priority boarding, access to airport lounges, and additional baggage allowances. This creates a sense of belonging and appreciation, as airlines aim to build long-term relationships with their customers through these loyalty programs.