"We have had a clear growth strategy for the Asian market, and Korean Air's increase in services is another demonstration of the commitment to our market.
"We've been working hard over the past three years to promote the opportunity, and specifically working alongside Tourism New Zealand and Korean Air to market New Zealand as a destination in Korea."
Short-term visitor arrivals from Korea dropped 12.1 per cent in the year ended September to 56,101 people, according to Statistics New Zealand.
Ministry of Economic Development research released this week showed total spending by visitors from Korea fell 12.1 per cent in the year ended September to $196 million.
Tourism NZ's general manager for Asia markets Mark Frood welcomed news of the increased capacity.
"This ... provides further opportunities for arrivals growth from our Korean market and also with Korean Airlines' European and wider Asian network connections."
Tourism NZ partnered with Korean Air and had just begun its latest campaign aimed at increasing visits for the New Zealand summer, he said.
"We are confident we will start seeing some growth reappear in the market, after what has been a tough year, and we are seeing positive signals from trade due to this increased capacity."