Originally Posted by
MSPeconomist
The lounge access rule is supposed to be same day SkyTeam international itinerary for SkyTeam ElitePlus. A domestic to international connection should give lounge access before both flights, assuming that they're both SkyTeam, but not a standalone domestic flight.
That was my experience on a VN flight last year from HAN-ICN, which allowed me access to the lounge in HAN as a DM.