New Delhi, Oct. 14 -- Adani-owned Navi Mumbai International Airport will need to develop its supporting infrastructure to attract international airlines and expand operations, according to a senior executive at Emirates, India's largest foreign carrier. The comments come as airlines and the airport operator work through a proposal to shift some international flights from Mumbai's existing airport to the new facility.

"Until it gets kind of fully built in the ecosystem, I think it's gonna be difficult for any of the airlines to shift there," said Essa Sulaiman Ahmad, senior vice president, West Asia and Indian Ocean, commercial operations at Emirates.

Outlining the facilities needed to support international operations, Ahmad said, "At an...