A chartered flight carrying about 40 MLAs took off from the Ranchi airport shortly after 4.30 pm towards Raipur, the capital of Chhattisgarh.
However, the BJP will try not to leave any stone unturned in the upper house, as it will have a direct impact on the Presidential elections to be held in the coming months.
Fernandes had been hospitalised after suffering a head injury two months ago after an accidental fall.
He was a key leader in the Samajwadi Party and played a pivotal role in providing support to the UPA government in 2008, after the CPM withdrew from the government over a nuclear deal with the US.
Political analysts said the move was aimed at wooing OBCs in Bihar, who constitute 41% of the population.
The CBI is probing various senior government officers involved in the grant of licenses without due diligence.
Though TRS chief K Chandrashekar Rao is keen on the formation of a federal front, Stalin is likely to urge him to back the Congress and help form an anti-BJP government.
YSR chief Jaganmohan Reddy’s recent ‘forgiving Congress’ comment is seen as his readiness for a tie-up.
The United Progressive Alliance (UPA), lining up all the coalition parties, might be able to win up to 200-210 seats, according to the Congress estimates.
The report does not disclose the actual price of the 36 Rafale fighter jets contracted by the NDA government.