New Delhi, Jan 22 (Reuters): Kingfisher Airlines needs at least Rs 10 billion to restart its grounded operations and must also demonstrate an ability to sustain itself for at least 6 months, civil aviation minister Ajit Singh said on Tuesday.

Earlier in the day, a senior government source said India was willing to support a rescue plan from Kingfisher if it could settle months of salary due to frustrated employees, sending the airline's shares up as much as 9%.

The comments came after Kingfisher chief executive Sanjay Aggarwal met officials at the ministry of civil aviation to discuss the plan, which was earlier rejected by the regulatory Directorate General of Civil Aviation (DGCA).

Singh said all stakeholders, including banks, airports and oil companies, will have to give no-objection certificates for the carrier to fly again.

Kingfisher has already received no-objection certificates from oil companies and some aircraft leasing companies to restart operations, a senior regulatory source said last week.

The airline, which is estimated to owe $2.5 billion in debt to banks, staff, vendors and others, has submitted a $119 million revival plan to the regulators.

An official at the DGCA said earlier this month that the plan would not be sufficient to rescue the airline.

Kingfisher shares, which hit a lifetime low of Rs 7.05 last August, closed up 7% at Rs 14.45 on the National Stock Exchange.