A demonstration in front of the Russian Embassy is planned for 6pm. There will also be events in Turku, Tampere, Oulu, Rovaniemi and other towns.
Politkovskaya, an outspoken critic of the Russian government and the Chechen war, was murdered in her apartment building in 2006. The case remains unresolved.
Large-scale vaccinations were to have begun in early February, but that will now have to be pushed back.
The carrier will require a negative Covid-19 test certificate of all passengers on flights to Finland as of Thursday.
Foreign minister Reinsalu said Finland's latest decision will in effect cut off work trips between the two countries.
The latest measures are aimed at tackling the spread of new coronavirus variants.
This article brings you the latest updates on the novel coronavirus pandemic in Finland.
