Waiting lines and queues are a frequent occurrence in both the workings of businesses and the daily lives of clients. A queue is the first contact point between a business and its client. Clients may not be satisfied with lengthy queues. Therefore, in order to leave a lasting first impression on the client’s mind, it is crucial for a company to ensure minimal queuing. The aviation industry experiences significant queuing issues as a result of passengers queuing up for boarding, departure, luggage pickup, and so on. A systematic queue network is also required to guarantee that planes experience minimum air and runway congestion. Queuing theory is a mathematical approach to the analysis of queue waiting times. This paper presents a run-through of queuing theory and its application in the aviation industry, covering a detailed explanation of queuing theory, terminologies associated with it, recent advancements in airport queuing, various queuing models, as well as some suggestions for further research.