"An Air Force regiment based at the Pereyaslavka airfield in the Khabarovsk Region will receive 20 modernized Su-24 aircraft," Colonel Alexander Drobyshevsky said.
The first six Su-24M fighter-bombers have already been upgraded at the Novosibirsk aircraft manufacturing plant and could be deployed with the regiment by December 10.
Another six Su-24s are currently being modernized at the same plant, the spokesman said.
The Su-24 is a two-seat, twin-engine strike aircraft similar to NATO's Tornado and Mirage 2000 planes.
The plane has been in service with the Russian Air Force since the mid-1970s, and in recent years Russia has gradually been phasing out the planes, which have a patchy safety record.
According to the Defense Ministry, the Su-24 will be gradually replaced with new Su-34 Fullback strike aircraft, which has the potential to become the top plane in its class for years to come.