Yep the flying returns program is good if you are looking for redemption on AI flights itself, since AI isn't part of *A so you can't use their miles to redeem on other *A partners but with LH and SQ they have a tie-up whereby you can credit AI flights to either one of them. So you can pick and choose either one of LH or SQ FFP's if you are looking for international redemption but if you are looking for domestic redemption you can enroll for flying returns program, i guess they still have the 1000 miles sign up bonus promo running.