Airline loyalty refers to the practice of travelers consistently choosing the same airline or its partners for their flights. This loyalty is often encouraged through frequent flyer programs, which reward customers with points or miles for each flight taken. These points can be redeemed for free flights, upgrades, or other benefits, making it more appealing for travelers to stick with a particular airline. Many airlines, such as Delta Air Lines and American Airlines, have established loyalty programs that offer tiered benefits based on the number of flights or miles flown. Higher tiers provide additional perks, such as priority boarding and access to exclusive lounges, further incentivizing customers to remain loyal to the airline.