Delta says US approves joint venture with Korean Air

Delta says US regulators have given the green light to a joint venture with Korean Air, and the carriers are waiting for approval from the South Korean government. Delta said Friday that the US DoT approved the arrangement. It still needs approval from South Korea's transport ministry. With antitrust immunity, the airlines can share costs and revenues from flights. Delta says the airlines will sell seats on more of each other's flights and allow customers to earn and redeem frequent-flyer miles on both carriers.<br/>