The IndiGo offer is for travel between between July 1 and September 30 and is applicable only on domestic routes.
Typically, the monsoon season is a lean period for airlines which come up with discount offers to lure flyers.
IndiGo has not however disclosed the number of seats on offer under the promotional scheme.
IndiGo said that the lowest fare of Rs 829 under the promotional offer is for the Imphal-Guwahati route.
Among other routes, tickets on Delhi-Mumbai sector are priced at Rs 2,486 and Delhi-Chennai at Rs 3,338.
A check on IndiGo’s website showed that tickets on Delhi-Mumbai sector for travel next week is priced at around Rs 5,000.
Many other airlines like GoAir, Jet Airways and AirAsia India are also offering discounts for monsoon season travel. Jet Airways, for example, under its “GetMore” scheme, is offering fliers a 20 per cent discount on business and economy class base fares on its domestic network.