Korean Air is boosting its already extensive US network with a new route to Boston next year, which will also strengthen its transpacific joint venture with Atlanta-based Delta Air Lines.

The Seoul-Boston service is scheduled to begin April 12, 2019. It will be a year-round service operated by Boeing 787-9s and will start with five flights per week.

Korean Air said Boston is the most popular market for service to South Korea that does not have direct flights.

Delta also plans to add a flight to Minneapolis in 2019. The Boston and Minneapolis services will be the first added since the joint venture with Delta was launched in May, Korean Air said.

Korean Air will serve 11 US gateways after the Boston flights begin. Together with Delta, the JV will have 115 flights per week on 13 routes between South Korea and the US by next year, an increase of 10% compared to summer 2018.

The partnership also extends to connections beyond gateways in the US and South Korea. In January, Delta and Korean Air improved their connecting capabilities by co-locating in a new terminal at Seoul Incheon International Airport.

Adrian Schofield, adrian.schofield@informa.com