On the same day, the Airline's regional wing SilkAir will cease services to Kolkata. Currently, SIA operates four weekly flights and SilkAir three weekly flights to Kolkata.
SIA's Kolkata services will continue to be operated by the Airbus A350-900 medium haul aircraft, a Singapore Airlines release said.
Ticket sales for SIA's additional Kolkata flights will commence from Tuesday.
Customers with existing bookings on SilkAir's Kolkata flights on and after March 29 will be re-accommodated on SIA's flights, the release said.