Attending a Conference

So, I was invited to attend a conference that is to happen in October this year. I'm contemplating on it, as there is no sponsorships in attending. So all costs is out of my own pocket, flight and hotel. It would be a great educational experience, as it will help with my profession. So, I'm asking if either one of my Supervisors are interested, that way, we could at least share the cost of the hotel. Four other Instructors are going, and they are all sharing rooms already. One of them even booked her flight! I actually really want to go, but it'd be nice if someone can go with me. That way, we could fly together and share a hotel room. I hope the Supervisor decides quickly, as I assume the earlier I book a flight, the cheaper it'd be with the discounts.