Major airlines often operate large fleets, ranging from small regional jets to large international aircraft, enabling them to cater to a variety of markets. Low-cost carriers have gained popularity by offering budget-friendly options, leading to increased competition and more choices for travelers. Frequent flyer programs and alliances, such as Star Alliance and Oneworld, enhance customer loyalty and expand route options.
Source: https://discussions.trendmicro.com/en-us/forums/pc-security/5651bf17-9499-ef11-95f5-6045bd52ae83
