Step 1: Visit https://www.flipkart.com/account/giftcard
Step 2: Login to your Flipkart account, if you are not logged in
Step 3: Click on Add A Gift Card
Step 4: Enter the Flipkart Voucher Code & Activation Pin
Step 5: Click on “Add Gift Card to Account”
Now, you can select your Gift Card balance as a payment option when placing an order on Flipkart.