Noi Bai International Airport — Hanoi (Soc Son), Vietnam

North of the Red River and a comfortable drive from central Hanoi, HAN handles the bulk of air traffic feeding Vietnam's capital and the surrounding Red River Delta, an area dense with manufacturing plants that have drawn foreign investment in electronics and textiles. The airport's name comes from the Nội Bài area where it was built, and decades of expansion have transformed what began as a modest airfield into one of Vietnam's two largest gateways alongside Ho Chi Minh City's Tan Son Nhat. Vietnam Airlines and the budget carrier VietJet both anchor extensive domestic networks here, linking the capital to beach destinations, highland towns, and secondary cities across the country. Travelers bound for Hanoi's Old Quarter, Ha Long Bay, or the mountainous north typically pass through this terminal first. Continued growth in Vietnamese outbound and inbound tourism has pushed successive rounds of terminal expansion.