Sounds like a pretty cool idea to me.
I just have several questions - what is the exact purpose of this 'project'; do you intend to promote Airlines, give airline and aviation news, or post and lead discussions about Aircraft?
I see on the Twitter page that you have promoted something with Volaris (I am assuming some local airline somewhere?), do you earn money with this or is it, at least for the moment, a personal project in progress?
And lastly - do you focus on particular Airlines or geographical locations around the globe? The reason for this question is that I also see on the Twitter page that there are numerous posts specifically about Mexican airlines.
To conclude this post, I want to give you two pieces of advice, which are really just from my own opinion:
1. Begin to deliver news at a global scale - e.g European airlines, Asian airlines, etc. This will help you get more followers as you are targeting more people around the world.
2. Concentrate more on delivering news, rather than promoting the deals of airlines, etc. Although you said above that you want to deliver Airline offers, I don't necessarily think that this is what will get people to follow you're page. Consider this, there are thousands of promotion sites for such things out there, including the companies actually offering the deals. People will primarily follow your page for airline and aviation news, aircraft news and pictures, and instant live updates about such things, especially over twitter.Therefore, I suggest doing these things foremost and cutting down the promotions and likewise posts.
This is just really my personal advice so don't feel the need to change anything, but I do hope you consider some of my thoughts.
Your project is just at its beginnings, but I do think this has some potential in the future.
Thanks!