Originally Posted by
gijoe24jp
I am NOT making a stop over at ICN. I plan to transfer at ICN to go to NGO because TPE-NGO non-stop flight by NH is full already.
You can not take TG from TPE to ICN because TG is a third country between two cities and these flights are for transfer/connection only (not for passengers initiating flights). Keep in mind that you usually need to take flag-carrier in or out the city that you want to visit.