Looking at the following schedule -
Bus at 2245 (arrives 0345) GLW to MAN on Fri 6th
Flight at 0610 (arrives 0950) MAN to ZAG on Sat 7th
Bus at 1230 (arrives 1445) ZAB to LJUB on Sat 7th
Bus LJUB to ZAG at 1620 or 1815 (arrives 1835 or 2030) on Mon 9th
Flight at 2150 (arrives 2330) ZAG to MAN on Mon 9th
Bus at 0930 (arrives 1400) MAN to GLW on Tues 10th
Total cost about £185