- 2021 National Service Awards : Airport Transit Services
- Agency : The Institute for Industrial Policy Studies
- Award date : Jul. 2021
- 2021 World Airport Awards : COVID-19 Airport Excellence & World's Best Airport Security
- Agency : Skytrax
- Award date : Aug. 2021
- 2021 Red Dot Design Award: "Red Dot Winner"
- Agency: Red Dot Award
- Award date: Aug. 2021
- ACI Customer Experience Global Summit : Airport Customer Experience Accreditation Level 4
- Agency : ACI
- Award date : Sep. 2021
- 2021 Air Transport World : Airport of the Year
- Agency : ATW
- Award date : Oct. 2021
- 2021 AFLAS; Asia Freight, Logistics & Supply Chain Awards 2021 Best Green Airport
- Agency : Air Cargo News
- Award date : Nov. 2021
- ROK President's Commendation for National Quality Innovation (Social Value Creation) – The 47th National Quality Management Convention
- Agency : Ministry of Trade, Industry and Energy, Korean Agency for Technology and Standards
- Award date : Nov. 2021
- MOTIE Minister's Commendation for Carbon Neutrality and Energy Efficiency – Korea Energy Awards 2021
- Agency : Korea Energy Agency (KEA)
- Award date : Nov. 2021
- Grand Prize – 2021 Value Engineering (VE) Awards & Conference
- Agency : Busan Metropolitan City & Busan Metropolitan Corporation
- Award date : Nov. 2021
- Excellent Sustainability Reporting (3rd Consecutive Year) – 2021 Global Standard Management Awards (GSMA)
- Agency : Korea Management Registrar (KMR)
- Award date : Dec. 2021
- Grand Prize for Dominant of the Value (8th Consecutive Year) – The Management Grand Awards 2021
- Agency : Korea Management Association Consulting (KMAC)
- Award date : Dec. 2021