This was reported by RIA Novosti with reference to the airline's data.
It is specified that flight N4-555 to Varadero departed from Sheremetyevo at 11:31 Moscow time according to the central schedule.
During the flight, two passengers became ill.
"In order to provide medical assistance to passengers, the crew of the aircraft decided to return the aircraft to the airport of departure at Sheremetyevo," the statement said.
Earlier, the Nordwind Airlines aircraft, which operated the Moscow - Varadero (Cuba) flight, received permission to return to Russia through Norwegian airspace due to a medical emergency on board.
In addition, on December 18, the Moscow-Yerevan passenger plane returned to Sheremetyevo after the landing gear failure sensor was triggered.