India's biggest airline by market share, IndiGo, reported ₹13.04 billion ($196 million) in net profit in the year to the end of March, two sources familiar with the matter said on Thursday, up from ₹3.17 billion a year earlier.
IndiGo's parent company InterGlobe Aviation Ltd is preparing to list on the stock exchange after filing a draft prospectus in June as it looks to cash in on the airline's success.
The sources declined to be named because the results are not yet public.