Originally Posted by
choijw
Yes, I've had friends and family members go from economy to business on TPACs due to oversold economy at the gate. Usually they were traveling solo, wore appropriate attire (business casual), and had status with KE.
I've had it a couple of times on BKK-ICN but never transpac, Y to J once and J to F once (though in that case, it was F seats by J service). This was as a PM and DM on Delta, SkyTeam Elite Plus, with no status on KE. The J to F was even an award ticket.