The Jet offer for pan-India sales begin as low as Rs 1,499 on all its economy class domestic networks.
"Flyers will be able to enjoy substantial discount of up to 50 percent on the base fare and fuel surcharge, across all direct destinations on the airlines' domestic networks," Jet Airways senior vice-president Gaurang Shetty said.
The four-day special fare offer from Jet will be open from August 1 to 4, with travel effective from September 1, onwards for all Jet group flights.
The SpiceJet offer opens on August 1 and will run up to August 4, for travel between September 1 and December 15.
"We are back with yet another super sale offer with fares starting at Rs 2,099 all-inclusive across all our domestic network. Bookings will remain open from August 1 thorugh 3 and valid from September 1 through December 15," SpiceJet said.
Jet said the economy class passengers travelling on its domestic network (of both Jet Airways and its low cost arm Jet Konnect) will be able to book tickets starting at Rs 1,499 inclusive of all taxes. The city-based airline last week had announced discounted sales on its international routes along with its foreign partner Etihad.
SpiceJet started the fare-war in January with up to 50 per cent discounted fares which was followed up all other airlines including the national carrier Air India. Since then SpiceJet has launched nearly a dozen discount sales.