Poland's military said the recent incidents posed "no threat to the security of the Polish airspace". However, temporary restrictions for civil aviation were imposed on part of the airspace over the Podlaskie region bordering Belarus.
The Belarusian embassy in Warsaw did not immediately respond to a request for comment.
Poland and the Baltic countries have accused Belarus and Russia of conducting a hybrid war against the West, whose elements include fomenting a migration crisis on the European Union's eastern border, sabotage and espionage as well as the use of balloons smuggling cigarettes.
Polish authorities are on high alert since Russian drones entered Polish airspace in September, while an explosion on a rail line carrying passenger trains in November was blamed on Moscow.
On Jan. 22, the Operational Command of the Polish Army reported "increased activity by small unmanned aerial vehicles operating over the Polish-Belarusian border" it had observed the previous night. At the time, Poland summoned the Belarusian envoy to Warsaw, arguing that "such incidents are part of the hybrid operations undertaken by the Belarusian side, aimed at destabilizing the security situation and testing the Polish airspace defense system."