Around 99 per cent of all eligible employees have received at least their first dose of COVID-19 vaccine till date, Vistara said on Wednesday.
People who are being treated for COVID-19 or have recently recovered from it are not eligible for vaccination.
The airline has around 4,000 employees.
"This is the outcome of airport-led vaccination drives across the country and the Vistara-led drive which has been carried out in Delhi and the one in Mumbai is currently underway," the airline's statement said.
The airline said it took a multi-pronged approach to vaccinate its employees.
The full-service carrier said it tied up with healthcare providers and government agencies for exclusive vaccination camps at its premises. Also, if applicable, employees were reimbursed for the cost of COVID-19 vaccination.
Moreover, the airline said it gave time off to crew post vaccination.
(With input from agencies)