The Centre, before taking any final decision on resumption of international flight operations, is 'closely monitoring' the situation emerging out of the Covid-19 'Omicron' variant.
According to civil aviation regulator DGCA, stakeholders are being consulted on the evolving situation.
"In view of the evolving global scenario with the emergence of new 'Variants of Concern', the situation is being watched closely in consultation with all stakeholders," the DGCA said in a circular issued on Wednesday.
"An appropriate decision indicating the effective date of resumption of scheduled commercial international passenger services shall be notified in due course."
Earlier, India had decided to allow resumption of scheduled commercial international passenger services from December 15.
However, the government said there will be a calibrated resumption of operations from the countries recognised as "at risk" by the Union Health Ministry.
There are more than 10 countries in the "at risk" list, including countries in Europe, South Africa, Brazil, Bangladesh, Botswana and China, among others.
Passenger air services were suspended in late March 2020 due to the nationwide lockdown to check the spread of Covid-19. While domestic flight services resumed from May 25, 2020, international flight services were only maintained through bilateral 'Bubble Agreements'.
India has air bubble pacts with 28 countries.