Clearance was given by the High Court after CIDCO said it had obtained necessary permissions from the Union Ministry of Environment and Forests (MoEF), Wildlife Authority and other bodies.
Besides, an exemption had been given to CIDCO from Coastal Regulation Zone (CRZ) regulations for development of the airport, CIDCO's counsel G S Hegde informed the court.
"Today, the High Court has granted final approval to cut the mangroves. This was the last legal hurdle in the way of the proposed airport at Navi Mumbai," CIDCO's lawyer said.
Earlier, the Bombay Environmental Action Group (BEAG) had filed a petition opposing the airport in Navi Mumbai.
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One of the grounds of BEAG's opposition was that airport development would cause wide destruction of mangroves located in the area.
Earlier, the High Court had passed orders on this petition.
After obtaining clearances from authorities, CIDCO recently moved a notice of motion on this petition, seeking permission from the High Court.