I confess I know nothing about Singapore Airlines, so bear with me.

How is it that they are so profitable, in a cut-throat, competitive
world-wide market?
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This is a good question that I have wondered about myself and I am not
sure that there is any simple answer. Their service is fantastic and
the prices are not high at all which makes me wonder if the Singapore
govt subsidizes SA in different ways and their profit may not be as
high under the hood when everything is taken into account.. hard to
tell. Image is everything for the Singapore govt and they leave no
stone unturned to project a positive image of their country.