Classic airliners are aircraft that were widely used for commercial passenger travel from the mid-20th century until the early 2000s. Notable examples include the Boeing 707, Douglas DC-8, and Lockheed L-1011 TriStar. These planes are known for their distinctive designs and significant contributions to the growth of global air travel. Many classic airliners featured propeller engines before the transition to jet engines, which allowed for faster and more efficient flights. They played a crucial role in connecting cities and countries, making air travel more accessible to the general public. Today, these aircraft are often celebrated by aviation enthusiasts and preserved in museums.