To get started, foreign airlines have to sign up on the DGCA's online portal and share key documents like their Air Operator Certificate and company registration.
They will also need to introduce their top team, pick a local representative who knows Indian aviation rules, and apply at least 90 days before flying.
The DGCA will review everything, looking at things like safety records and maintenance plans, and can approve flights for up to five years.
But if any rules are broken, those permissions can be pulled back.