After taking charge of his new portfolio, he met senior colleague Ashok Gajapathi Raju and other officials at the ministry including Secretary R N Choubey.
Former MoS Civil Aviation Mahesh Sharma was also present.
"Excited to 'take off' at Civil Aviation Ministry under @Ashok_Gajapathi Ji's guidance," Sinha said in a tweet.
A member of the Lok Sabha representing Hazaribagh in Jharkhand, Sinha studied at IIT, Delhi, University of Pennsylvania and Harvard Business School.
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In another tweet, Sinha, who was earlier Minister of State for Finance, thanked Finance Minister Arun Jaitley for all his support and guidance.
"Thanked my team at @FinMinIndia for all their long hours and terrific work!," he tweeed.
In a major reshuffle yesterday, Sinha was moved from all-important Finance Ministry which has been attributed in some quarters to his 'speaking out of turn' on certain occasions.