https://www.rus.rusemb.org.uk/consnews/412
According to the explanations of Rospotrebnadzor, all foreign citizens arriving on regular flights (the issue of restoring regular flights between Russia and the UK is currently under consideration).:
- provide a medical certificate confirming they have tested negative for COVID-19 on a Polymerase chain reaction (PCR) test conducted within 3 days before arrival in Russia;
- in the absence of a medical document confirming a negative result of a laboratory test, they are required to have a PCR test within 3 calendar days of arrival
- fill out a questionnaire in a special form in English or Russian on board of the aircraft to;
- may not be allowed on board of the aircraft without a medical document confirming the negative result of a PCR test (by decision of the airline).