The alliance among the JMM, Congress and the RJD has 47 MLAs, and it is supported from outside by a lone CPIML(L) legislator.
The 67-year-old tribal leader was sworn in as the 12th chief minister of the state.
The chartered planes did not take off due to poor visibility, as per latest reports.
Soren also claimed that he was not linked to the money laundering case in which he was arrested.
Senior leader Champai Soren has been proposed as the new CM by JMM-led coalition.
Hemant Soren was arrested after a marathon seven hours of grilling by the Enforcement Directorate in a money laundering case at his official residence.
Soren held two rounds of meetings of alliance legislators at the CM House to discuss the present political situation in the state.
The train, which will have eight coaches and will run six days a week, will start at 6 am from Tatanagar and will reach Varanasi by 1.50 pm.
Justice SK Dwivedi also ordered that no coercive steps be taken against Gandhi.
The Jharkhand native Ajay Oja was held in a joint operation of the Kerala and Jharkhand police.