China Eastern Airlines will launch the world’s longest direct flight on December 4, 2025, connecting Shanghai and Buenos Aires with a Boeing 777-300ER. The journey will cover nearly 19,700 km and last up to 29 hours westbound, with a technical stop in Auckland for refueling and crew change—passengers will remain onboard. The ultra-long-haul flight highlights both logistical challenges and the strengthening economic ties between China and Argentina.
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