The range will include two Android JellyBean operating system-based handsets and two smartphones based on the latest Android KitKat OS.
"It is our continuous endeavour to make technology available easily and at affordable prices to the greater masses of India. In this digital age, we believe every Indian should have access to a smartphone," Flipkart SVP (Retail) Kalyan Krishnamurthy said in a statement.
Flipkart has a similar exclusive partnership with Motorola, under which it has launched three devices -- Moto G, Moto X and Moto E.
It has 18 million registered users and claims to receive 3.5 million daily visits.
The Karbonn Smart A50S and Smart A52+ are Android JellyBean OS-based handsets priced at Rs 2,699 and Rs 3,099, respectively. The dual-SIM 2G devices feature 3.5 inch screens, 1.2 GHz dual core processors, 2MP rear camera and digital front camera.
The 3G-enabled Karbonn Smart A12 Star sports a 4-inch screen, 1.2 GHz dual core processor, 5MP rear camera, digital front camera and is priced at Rs 4,099.
The Karbonn Smart A11 Star, which also has 3G capability, has a 4.3 inch screen and will cost Rs 4,499.