The Evolution of 롤육성
https://www.evernote.com/shard/s315/sh/6357b1ce-f543-410f-a700-9d09062014e2/11b8164076eba4122e8c406391f814d2
It may be feasible that you just consider the cost of the flights, timetable or discounts and dont spend any awareness towards the airline that can take you towards your wished place.