Around ten years ago there was the grand trick where you could open an American Airlines account, wait for their promotions (twice a year) and then buy airline miles for half price. Unbeknown to many, those miles were compatible with Star Alliance / Miles and More. You could basically do a long haul flight from Switzerland in business or even first class for a ridiculously low price (something like first class to Japan for 2k in Swiss - which is a lot but nothing compared to the real ticket). I don’t think this works anymore, hence this thread…
Is anyone aware of some similar traveling life hacks that are applicable nowadays?