One of the first discussions that happened after the launch of Vistara, was the close affinity that Vistara and Singapore Airlines share, and hence the fact that they will partner in terms of a loyalty program engagement.
At the launch event in December 2014, the airline did announce Singapore Airlines/Silk Air as one of their first partners, and when I recently discussed Club Vistara with them, they indicated a partnership was coming soon.
And it happened a couple of days back. From 30th of March 2015, there is a partnership which is live between Vistara and Singapore Airlines, which allows for the fliers on one airline to earn miles on the other’s frequent flyer program.
Here is how you can earn miles on Singapore Airlines’ KrisFlyer program while flying Vistara, with effect from March 30, 2015:
Similarly, you can earn points on Club Vistara for flying Singapore Airlines as with effect from March 30, 2015:
In a nutshell, there is similar earning on both partners. You earn 70% points for deep discounted Singapore Air/Silk air tickets, 100% for Economy and Premium Economy and 125% for business class tickets.
There is no further communication about how will you be able to redeem your Club Vistara points yet, and it is expected to come in another couple of months.