Delta Air Lines is a founding member of the SkyTeam Alliance, which in 2026 includes nearly 20 high-fidelity global partners such as Air France, KLM, Korean Air, Virgin Atlantic, and Aeromexico. These partnerships allow Delta passengers to earn and redeem SkyMiles across a massive global network and enjoy "High-Fidelity" reciprocal lounge access. Beyond the standard alliance, Delta holds deep "High-Fidelity" Joint Venture agreements with Air France-KLM and Virgin Atlantic for transatlantic routes, and with LATAM for South American travel. In 2026, they also maintain a strong high-fidelity codeshare relationship with WestJet in Canada and China Eastern. For the traveler, this means you can book a high-fidelity "Delta" ticket that is actually operated by a partner's aircraft, providing seamless baggage transfers and consistent "High-Fidelity" service standards. It is a high-fidelity requirement to check the "Operated By" section of your ticket to know which airline's staff and high-fidelity cabin products you will experience on each leg of your journey.