Pope Francis leaves Korea on Monday after spending 100 hours in the country. The pontiff presides over a mass at Myeongdong Cathedral at 10 a.m. before catching a plane at Songnam Airport south of Seoul at 1 p.m.
The mass will be attended by women who were forced into sexual slavery for Japanese soldiers during World War II.
Francis has called for peace on the Korean Peninsula during his trip and is to deliver a special message on Monday, according to Vatican spokesman Father Federico Lombardi.
On Saturday, the pope beatified 124 Korean Catholic martyrs in Gwanghwamun, Seoul and visited a Catholic charity village for the homeless and disabled in Eumseong, North Chungcheong Province.
On Sunday he celebrated mass at the Daejeon World Cup Stadium for young Catholics attending the World Asian Youth Day.
At 78, Francis had a busy schedule here, meeting and blessing scores of people including the poor and needy.