Russian authorities said late on Sunday that 41 people died when a Sukhoi Superjet 100 crash-landed at Moscow Sheremetyevo airport.
“There were 78 people on board, including crew members,” the Russian Investigative Committee said in a statement on its website.
“According to updated information, 37 out of them survived.”
Earlier on Sunday, the investigators said 13 people had been killed in the plane crash.
Television footage showed the Sukhoi Superjet-100 making an emergency landing at Moscow’s Sheremetyevo airport with much of the rear part of the plane engulfed in flames.
Many passengers then escaped via the plane’s emergency slides that inflated after the hard landing.
Russian news agencies said the plane had been flying from Moscow to the northern Russian city of Murmansk before turning back.
Russian investigators said they had opened an investigation and were looking into whether the pilots had breached air safety rules.
The Flightradar24 tracking service showed that the plane had circled twice over Moscow before making an emergency landing after about 45 minutes.