In Korea, Google Maps may not work properly, so we recommend using Naver Map or Kakao Map.
These are the most widely used navigation apps for getting around.
Naver Map Download
Kakao Map Download
Venue Information
From Gimpo & Incheon Airport → KINTEX
From Gimpo & Incheon Airport → Seoul Station
Seoul Station → KINTEX (via GTX-A Line)