What is the main reason why airline deregulation in the U.S. had such a large international impact?

In 1978 the United States, through the Airline Deregulation Act, removed all the regulations that restricted the airlines in the U.S. The deregulation of the airlines in the U.S. had a significant impact on the entire globe.

The main reason why the airline deregulation in the United States had a massive international impact is that it lowered flight prices. The Airline Deregulation Act lead to an increase in the competition since the number of airlines increased. With the increase in competition, the airline firms were forced to decrease their price. With a decrease in prices, the number of people using airline transport increased because more individuals could afford the charges.