I thought in this day and age, we are all used to seeing fine print in everything? So what are we complaining about!? Those of us who flies enough knows that the only one way fare available is Y. Since this is not a web only seat sale, most people will probably call AC direcly to buy the tickets so they could ask them how to get the price listed in the ads. Another prime example of how an improved website could have greatly reduced the work loads of the agents. Academic has already addressed the website problem so no need to repeat it again.
As for deceptive, doesn't all ads do that? Those one way fares certainly caught my attention because I thought AC was giving away the bank! It was not until I read on that I find out that it was one way fares.