Nowadays traveling by plane is more affordable than ever before. Has it always been like that? We are going to look in the past, briefly talk about the ticket price evolution over the last decades, the disruptive appearance of the low cost airlines. After that we are going to take a look at the systems which form the backbone of the commercial aviation, so we can answer the question on what is actually happening under the hood during the ticket purchasing process. Does it have anything to do with economics, supply and demand?