Are the airline industries in countries other than the U

Yes.

Most of the airline in other countries apart from the U.S have a similar market structure. There are a variety of market structures, but one that is adapted by the most airline industry is an oligopoly. The market structure is identified by the presence of a limited number of competing firms. They are all in pursuit of satisfying their clients through their goods and services. In the airline industry, all firms operate on the same level in that no firm is more superior than the other. They all compete in capturing, serving and retaining the consumers in the market.