1. KLIA was the Best Airport in the Asia Pacific for category 15 to 25 mppa by Airport Service Excellence 2000.
2. KLIA was the 2nd most improved airport for 15 to 25 mppa by Airport Service Excellence 2000.
3. KLIA emerged 2nd in the Reader's Travel Awards 2000 conducted by Conde Nast magazine.
4. The KLIA Security and Safety Division received its ISO 9002 certification.
5. The Electrical Power System of the Engineering department in KLIA received its ISO 9002 certification.