Welcome to FT!

The answer to your question depends largely on variables you didn't state. What class of service will you be in? (Some programs reward high-priced travel, relative to lower fares, more than others.) What *A travel do you expect after this trip? (If you don't expect any, miles that don't expire for a long time may trump everything else.) What are your objectives: free travel, upgrades, elite status, other? Are you based in India, or is that just the point of origin of this trip? If the latter, where are you based?