Pakistan Muslim League-Nawaz (PML-N) President Shehbaz Sharif on Wednesday departed for London to bring back Begum Kulsoom's body.
Shehbaz departed from the Allama Iqbal International Airport via a foreign airline.
The funeral prayers of ex-premier Nawaz Sharif's wife, Begum Kulsoom, will be offered at the Regent Park mosque on Thursday after Zuhr and her body will be flown to Lahore after completion of legal formalities.
Her body has been moved to a mortuary near the Regent Park mosque.
The Sharif family has said that the former premier's wife will be laid to rest on Friday in Jati Umra.
Begum Kulsoom, the wife of former prime minister Nawaz, passed away in London on Tuesday after battling cancer. She was 68.
Earlier, the former prime minister, his daughter, Maryam, and son-in-law Captain (retired) Safdar were released from Adiala Jail on parole hours after Begum Kulsoom passed away.
Nawaz, Maryam and his son-in-law Captain (retd) Mohammad Safdar have been released on 12-hour parole to attend Begum Kulsoom's funeral.
The Punjab cabinet is, however, likely to extend the parole of the three. The Sharif family has requested that a five-day parole be granted to them.