Another South Korean airline will be allowed to operate flights to Mongolia, ending Korean Air’s three-decade monopoly on the route.

Korean and Mongolian aviation officials agreed after a series of meetings on Wednesday and Thursday to allow multiple carriers to fly between Incheon and Ulaanbaatar.

The existing bilateral agreement signed in 1991 allows only one airline from each country — Korean Air and MIAT Mongolian Airlines — to operate six flights a week on the route.

With the new agreement, flights to Ulaanbaatar will be increased to nine times a week, starting from late March.