Lines
Line 1
99 stations · 200.5 km · Soyosan ↔ Sinchang / Gwangmyeong
Line 2
51 stations · 60.2 km · Circular (loop) + branches ↔
Line 3
38 stations · 38.2 km · Daehwa ↔ Ogeum
Line 4
47 stations · 65.7 km · Danggogae ↔ Oido
Line 5
56 stations · 57.0 km · Banghwa / Hanam Pungsan ↔ Macheon / Amsa
Line 6
38 stations · 35.1 km · Eungam ↔ Sinnamdong
Line 7
51 stations · 56.7 km · Jangsam ↔ Bupyeong-gu Office
Line 8
17 stations · 17.7 km · Amsa ↔ Moran
Line 9
38 stations · 38.8 km · Gimpo Airport ↔ VHS Medical Centre
AREX Airport Express
12 stations · 61.0 km · Seoul Station ↔ Incheon Airport T2