The answer from Cityflyer is the most correct one.
However if you want to fly cheapest (which basically mean very few miles with every airline) and you travel few times per year then I suggest you simply to choose the best airline in terms of comfort and timing for your trip.
Miles are a good thing but they tend to expire after 3 years....and moreover you have to consider that the most generous european airlines usually (but not always) are also those where it is the most difficult to redeem prizes.
And, by the way,for redemption it seems that *A is better (but not cheaper) than ST.

So, just for one long trip to Asia, choose the price and the comfort: from Malmo and surroundings you could compare SAS, LH, Finnair and even Turkish Airlines...otherwise only AF could fit your needs.