I guess your going to go on BAL530A before you return on BAL530B? Seem's sensible
.
Anyway, some flight details like you asked for:
Both routes are a 757-204....here's the usual routing:
EGBB-LEPA
N0458F370 CPT UN859 QUV LORES
LEPA-EGBB
N0455F380 DRAGO UN863 NTS UN867 BARLU UN861 FAWBO UB11 SAM UR41 WCO