Ukraine is to ban Russian airlines from flying into the country as part of sanctions imposed on Russia for it support of separatists in the east.
The ban will come into effect on October 25 and will include Russian airlines Aeroflot and struggling carrier Transaero.
Prime Minister Arseny Yatseniuk told a government meeting: "In accordance with a decision by the Security Council, the government of Ukraine is adopting a decision to ban flights by Russian companies, primarily Aeroflot and Transaero, to Ukraine.
"Russian planes with the Russian tricolour have no business in Ukrainian airports," he added.
Russian Transportation Minister Maxim Sokolov said Russia would take countermeasures if the flight ban is enforced.
According to Reuters around 8,000 people have been killed since fighting started in eastern Ukraine in April 2014.
The EU and the US have imposed their own sanctions against Russia over the conflict.