Incheon Airport to Downtown Seoul: AREX Express vs. All-Stop vs. Airport Limousine Bus (2026 Price & Route Guide)
AREX Express vs all-stop vs airport limousine bus into Seoul in 2026: real fares, first and last trains, which route fits Myeongdong, Hongdae or Gangnam, and exactly what still runs after a 23:30 arrival.