Kuala Lumpur International Airport was designed by Kisho Kurokawa around the idea of an 'airport in the forest, forest in the airport' — its satellite terminal is built around an enclosed courtyard of living Malaysian rainforest, visible from the gates. The current schedule feed lists 156 airports in 42 countries connected to Kuala Lumpur.
It is the hub of Malaysia Airlines and the main base of AirAsia, one of the largest low-cost airlines in the world, which is why the airport has one of Asia's busiest dedicated low-cost terminals.
Kuala Lumpur International Airport is the 20th busiest airport in the world — it handled 63,409,501 passengers in 2025, according to ACI World's annual ranking.
The most frequently served routes for Kuala Lumpur International Airport connect to Singapore (SIN), Kota Kinabalu (BKI) and Kuching (KCH).
The longest connected route for Kuala Lumpur International Airport reaches London (LHR). This non-stop flight covers a distance of 6,590 miles (10,605 km).