Originally Posted by
SK AAR
Yeah, it is TK only (no codeshare)
Although the fare ex LON is very good, you can even an get cheaper TK J fare from ARN at the moment (however, it will be on a A321 ARN-IST r/t whereas many LHR flights will be on 77W).
I'd take the TK A321 (w/sharklets) over any other European airlines short haul business product.