Update 10/27/23: This partnership deal is ending on 11/10/23
Original Post 2/19/22:
Delta has announced that starting next week it has a new partnership with Instacart. Delta members will be able to earn the following rates when linking their account to Instacart:
Earn 1x mile per $1 spent on Instacart purchases
Earn 1.5x miles per $1 spent on Instacart Express purchases
There is no sign up bonus when linking your account for the first time. You can view Instacart promo codes here.