Is the airline business considered to be a monopoly or oligolply?

it's an oligopoly, I think. If you think about it that's more likely. Good question by the way.

Tom is right. Please check these sites for more information.

http://en.wikipedia.org/wiki/Oligopoly

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Yes, the airline industry is considered to be an oligopoly. An oligopoly is a market structure where a few large firms dominate the industry. In the case of the airline industry, a small number of major airlines control a significant portion of the market. This results in limited competition and can lead to higher prices and less consumer choice.

To answer this question, you can refer to reliable sources such as:

1. Economic textbooks or online resources that discuss market structures and specifically mention oligopolies.
2. Industry reports or analyses that provide insights into the airline industry and its market structure.
3. Websites of airline industry associations or regulatory bodies that provide information on the structure of the industry.

By consulting such sources, you can gather information and draw the conclusion that the airline industry is an oligopoly.