I tried looking for this on the forum posts but could not find any information. I have a couple of free tix now available from kingfisher due to my spend on the kingfisher Amex credit card. I checked with the kingfisher guys and they said that for a Bom-del redemption in y class, there would be roughly 8-9k in fuel surcharges and other charges for the flight redemption. I wanted to check with the members here as to what would be the comparative charges on the J class. I would redeem accordingly.

Cheers