There is talk elsewhere on the web of virtual airline running scheduled flight between Stansted and Osijek. It seems the bulk of Sea Air's flights would be based around Osijek, Sarajevo and Mostar.
Yes I know Ryanair operate Stansted-Osijek from late March to late October.
Sea Air seem to use 3 different airlines to operate their flights - I've never heard of the three airlines and they are not even mentioned on Wikipedia.
It all seems like an outfit that is very different to most profitable airlines, but am happy to be persuaded otherwise. Seems too well put together to be a school project. Is anyone able to say anything about them from first hand knowledge ? (I can type stuff into Google as well)