Commercial air travel refers to the transportation of passengers and cargo by aircraft for hire. Airlines operate scheduled flights, allowing people to travel quickly between cities and countries. This mode of travel is popular because it saves time compared to driving or taking a train, making it easier for business and leisure travelers to reach their destinations. Airlines like Delta, American Airlines, and United offer various services, including in-flight meals and entertainment. Airports, such as Los Angeles International Airport and Heathrow, serve as hubs where travelers check in, go through security, and board their flights. Overall, commercial air travel has transformed how we connect with the world.