"I have ordered the drawing up of a government resolution to close the airspace over Poland to Russian airlines," Prime Minister Mateusz Morawiecki said in a social media post on Friday.
His government spokesman, Piotr Müller, later wrote on Twitter that the ban would take effect at midnight.
Meanwhile, Polish state airline LOT said it was suspending flights to Moscow and St. Petersburg starting 3 p.m. on Friday.
In the early hours of Thursday morning, Russia announced a "special military operation" against Ukraine to eliminate what President Vladimir Putin said was a "serious threat" against his country.
Despite appeals and warnings from the international community, Russia launched a full-scale invasion of Ukraine by land, air and sea, the biggest attack by one state against another in Europe since World War II, the Reuters news agency reported.
Top Polish officials have condemned Russia's attack on Ukraine and vowed support for the Ukrainian people.
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Source: IAR, PAP