Delta Air Lines is deepening its longstanding and industry-leading partnership with Air France-KLM Group with a €375m ($437m) investment to acquire 10% equity in the joint venture partner and a seat on the Air France-KLM Group Board of Directors. Additionally, Delta, Air France-KLM and Virgin Atlantic will launch a combined long-term joint venture, supported by a 31% investment by Air France-KLM in Virgin Atlantic, to offer customers the most comprehensive trans-Atlantic route network.