According to aviation regulator DGCA, IndiGo had around 47 per cent share of the domestic passenger market in July this year.
The structural streamline of airlines initiated for the greater benefit and convenience of the passengers.
Gangwal said the board has now approved a new related-party transaction policy and to also close an open issue.
The promotional sale is on till 22 August.
The differences between the two promoters came into the public after Rakesh Gangwal had sought Sebi's intervention.
Gangwal last month alleged violations of corporate governance rules at InterGlobe, calling for India’s securities regulator to intervene.
In July, Rakesh Gangwal flagged concerns over alleged corporate governance lapses at InterGlobe Aviation.
The non-stop daily flight on the Kochi-Jeddah route will commence operations from September 16.
Sebi and the corporate affairs ministry are looking into the alleged governance lapses at InterGlobe Aviation.
The company has reported the highest ever quarterly profit after tax in the latest June quarter.