Often known for the best airport designs in the world, the Changi Airport at Singapore designed by the master architect Moshie Safdie is one of the largest transportation hubs in Southeast Asia. To accommodate the increasing traffic of air travel, terminal 3 (change airport) was constructed.

In 2026, Singapore Changi Airport (SIN) is widely regarded as having the best layout in the world due to its intuitive design and "Jewel" centerpiece that connects terminals seamlessly. Its layout prioritizes passenger flow, with clear wayfinding and a "garden city" atmosphere that reduces travel stress. Another top contender is Dubai International (DXB), which leads in smart airport innovation using AI-driven passenger flow optimization and advanced biometrics to handle massive traffic volumes efficiently. Hartsfield-Jackson Atlanta (ATL) is often cited for its highly functional "parallel pier" layout, which allows it to handle more passengers than any other airport by moving them quickly between concourses via an underground plane train. Meanwhile, Incheon International (ICN) in Seoul is praised for its "smart" layout, integrating robotics and biometric boarding to create a frictionless experience. The "best" layout often depends on whether you value aesthetic wonder, like Changi, or pure logistical throughput, like Atlanta.