SpiceJet was offering 50 per cent off on base fares on tickets booked on select flights at least 30 days prior to travel (which can be purchased till January 23), while its no-frill competitors - IndiGo and GoAir - launched a similar scheme slashing fares by 30-50 per cent for advance purchases on its websites.
Air India launched a short term 'SpringSale' of up to 50 per cent on all domestic sectors of its network, while a Jet Airways spokesperson said no such decision has been taken so far.
The fare on Agartala-Kolkata would be Rs 1,385, between Delhi and Mumbai Rs 2,830 and Delhi-Ahmedabad Rs 2292, inclusive of taxes.
SpiceJet scheme would be valid for travel till April 15 but bookings have to be made in the next two days and all applicable fee and taxes would have to borne by the customer.
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Travel portals reported an immediate upswing in bookings within a few hours of the announcements.
"Such a limited period off-season sale is a routine practice in the airline industry across the world and tactical inventory management, to help airlines fill seats that would otherwise go empty. It is revenue-positive for the airline," a SpiceJet spokesperson said.
Spokespersons of IndiGo and GoAir were not available for comments, but travel agents confirmed that these two airlines have also launched similar offers.