The IPO received bids for 10,94,61,435 shares against the total issue size of 3,01,22,088 shares, data available with the NSE till 1400 hours showed.
The quota reserved for qualified institutional buyers (QIBs) saw tremendous response with over-subscription of 11.92 times, sources said.
The portion reserved for retail investors witnessed 51 per cent subscription and non-institutional investors category was subscribed 14 per cent.
This is the biggest IPO in the Indian market since Bharti Infratel's over Rs 4,000-crore public offer in December, 2012.
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The company had reduced its initial share sale size to a little over Rs 3,018 crore last week, with three of the promoters deciding to sell less number of shares than proposed earlier.
The offer comprises fresh issue of shares worth Rs 1,272.2 crore and the revised Offer for Sale (OFS) size that would be about Rs 1,746 crore.
The IPO closes today.
IndiGo has a fleet of 98 aircraft and about 75 of them are on operating lease - a business model which has helped it lower costs.