South Korea said on Tuesday that North Korea has proposed a new air route through the two countries. The North has proposed opening an international air route to a third country, not a direct flight route between Pyongyang and Incheon, South Korean foreign ministry spokesman Noh Kyu-duk said. If established, the new route would be an air traffic highway for any flight passing through the two countries’ airspace, according to a South Korean government official. The UN aviation agency directors will visit North Korea this week to discuss an earlier request by Pyongyang to open new air routes to South Korea, the organization said on Friday. The leaders of the two neighboring countries held a breakthrough meeting last month.