- Presidential commendation as an outstanding agency in “united defense operations” (“National Important Facilities: Management” category)
- Agency: Ministry of National Defense
- Award date: Jan. 2018
- Vision Awards 5 consecutive years Social Responsibility Sector(CSR) & Annual Report(AR) Platinum Awards
- Agency: League of American Communications (LACP)
- Award date: Feb. 2018
- 2018 World Airport Award Best Staff Service Award
- Agency: Sky Tracks
- Award date: Mar. 2018
- Global Outstanding Airport Award at the Air Cargo Excellence (ACE) Awards
- Agency: Air Cargo World
- Award date: Mar. 2018
- 6th Good Company Conference 1st Place in the State-owned Enterprise
- Agency: Sisa Journal
- Award date: Jun. 2018
- 6th Good Company Conference 1st Place in the State-owned Enterprise
- Agency: Moodie Report & Foodie Report
- Award date: Jun. 2018
- Korea Brand Conference Prize in the Enterprise
- Agency: Institute of Nation Brand Promotion
- Award date: Sep. 2018
- 2018 Asia-Pacific Business Traveler Award World Best Airport Duty-Free Shop Award, 8 consecutive years
- Agency: Asia-Pacific Business Traveler
- Award date: Sep. 2018
- 2018 TTG Travel Awards Best Airport of the Year, 6th consecutive years
- Agency: Travel Trade Gazette (TTG)
- Award date: Sep. 2018
- 2018 Korea SNS Award Grand Prize in the State-owned Enterprise
- Agency: Korea Association for Social Contents' Development
- Award date: Oct. 2018
- 2018 National Productivity Competition Grand Prize
- Agency: Korea Productivity Center
- Award date: Oct. 2018
- 2018 Korean Architecture Award Grand Prize in the Social & Public Sector
- Agency: Ministry of Land, Infrastructure and Transport; Korea Institute of Registered Architects; Seoul Economic Daily
- Award date: Oct. 2018
- 2018 Incheon Metropolitan City Architecture Award Grand Prize
- Agency: Incheon City
- Award date: Oct. 2018
- 2018 Korea Landscape Culture Award Grand Prize in the Ecology
- Agency: Korean Institute of Landscape Architecture
- Award date: Oct. 2018
- CAPA Asia-Pacific Aviation Awards Asia Large Airport of the Year
- Agency: CAPA(Centre forAviation)
- Award date: Nov. 2018
- China Business Traveler Award World Best Airport Duty-Free Shop Award
- Agency: China Business Traveler
- Award date: Nov. 2018
- 11th Korea Internet Communication Award/Social Media Award Grand Prize in the comprehensive
- Agency: Korea Internet Communication Association (KICOA)
- Award date: Nov. 2018
- No. 1 in the Ministry of Land, Infrastructure, and Transport’s 2018 Korean Sustainability Index (“Public Enterprise” category) and Outstanding Sustainable Management Report Award (“Public Sector” category)
- Agency: Korean Standards Association
- Award date: Nov. 2018
- 2018 Korean Business Management Award Best Company for Customer Value ('Dominant of the Value'), 5th consecutive year
- Agency: Korea Management Association Consulting (KMAC)
- Award date: Dec. 2018
- The 5th Global Air Education Symposium ICAO Award for Best Trainee Emissions
- Agency: ICAO
- Award date: Dec. 2018
- Excellence Award at 2018 Good Content Service Award (“Mobile Service” category)
- Agency: Ministry of Science and ICT, and Korea Data Agency
- Award date: Dec. 2018
- Grand Prize in the Civil Engineering Facility (“Social Overhead Capital: Living & Leisure Facility” category) at the 14th Korea Civil Engineering & Architecture Technology Awards
- Agency: Maeil Business Newspaper, MBN, Architectural Institute of Korea, Korean Society of Civil Engineers
- Award date: Dec. 2018