Tokyo Haneda International Airport — Tokyo, Japan

Ranking among the world's busiest airports, Tokyo Haneda, assigned the code HND, sits far closer to central Tokyo than its counterpart Narita, making it the preferred choice for many business travelers and domestic connections. Originally the capital's principal international airport, it ceded that role largely to Narita after 1978 and operated mainly for domestic flights for decades, before a new international terminal opened in 2010 restored significant global service. Haneda consistently earns praise for punctuality, cleanliness, and efficient design, qualities that have made it a repeat winner in passenger satisfaction rankings worldwide. It serves as the primary hub for both Japan Airlines and All Nippon Airways, anchoring their domestic networks across the country. Built partly on reclaimed land in Tokyo Bay, the airport continues to expand slot allocations for international carriers as demand for direct access to Tokyo's core keeps rising.