I don't think they are struggling Planesilly. That extra capacity is coming from a further leased aircraft - which suggests that Jet2 at STN are not struggling but rather performing beyond the expectations.
It was also added quite late on in the year again suggesting that they can fill the plane, profitably.
Looking at the timetable ... Burgas has appeared in the drop down box. So would imagine today the timetable is going to be uploaded with the announcement tomorrow.
One last thing - could it be that Jet2 are waiting on STN to release the slots. If rumours are to believed that they want a 12 to 14 base aircraft they very much could be waiting on STN to confirm slots.
Last edited by LBAflyer22; 2nd May 2018 at 09:42.