All Monarch flights from EMA on the current schedule have been by foreign operators.
First we had Avion Express A319 LY-VEU, then Small Planet B733 LY-FLJ which was joined by Air Italy B734 I-AIMR, this was replaced for one days flights by Air Italy B738 EI-IGN. LY-FLJ and I-AIMR are the current incumbents, although i understand the schedule drops to one aircraft this month.