After opening on a weak note, the stock further slipped 6.42 per cent to Rs 1,007.40 on BSE.
AT NSE, shares of the company were trading 6.95 per cent down at Rs 1,006.
Hit by higher expenses, InterGlobe Aviation on Friday saw its net profit remain flat at Rs 579.31 crore in the three months to March even as it flew more passengers during the period.
The largest domestic airline by market share had posted a net profit of Rs 577.33 crore in the year-ago period.
Despite lower fuel costs, IndiGo witnessed its total expenses in the March quarter jump nearly 12 per cent to Rs 3,409.86 crore. In the comparable period, the same was at Rs 3,049.79 crore.