The incident occurred in Okara district, 100 km from Lahore, police officials said.
According to an FIR, Muhammad Shahid and Iqra Bibi got married a few months ago but she left him and returned to her parent's house after developing differences with him.
She also filed a suite in court for dissolution of the marriage.
After failing to convince Iqra to shun differences and return to him, Shahid entered her house at midnight yesterday and attacked Iqra, her mother Faizan Bibi and sisters - Nasira, 8, and Mehwish, 5 - with acid and fled.
Police registered a case and conducted raids to trace Shahid.