AREX runs ~5:23am to ~midnight (last express ~22:50, last all-stop ~23:55), so a midnight landing means airport limousine bus or taxi. Limousine 6001 / 6015 / 6030 buses run until ~01:00. After that: airport taxi (~₩70,000 to Gangnam, ~₩90,000+ to Hongdae). If you need to wait until first train, ICN T1 has 24h Spa on Air (B1, sauna + sleep room).
Subway last train: ~23:30 to ~00:30 depending on line. After that: N-bus (night bus) numbered N15 to N75 covers ~9 corridors (Hongdae, Gangnam, Jongno, Itaewon) until ~04:00, ₩2,500 cash or T-money. Or just call Kakao T (English UI, card on file). Surge is common 23:00 to 02:00 on Fri/Sat; expect ~1.5x meter.
Convenience stores are the 24h fallback (cup ramyun, hot lunch box). For real food: 해장국 (haejang-guk, hangover soup) spots near Jongno 3-ga / Euljiro / Cheongjin-dong are open round-the-clock. Chimaek (chicken + beer) delivery via Baemin / Coupang Eats works until ~02:00 in central districts. Pojangmacha tents pop up after dark in Jongno, Hongdae, Gangnam.
Most pharmacies close ~22:00. Korea runs a 휴일지킴이약국 (designated holiday/late-night pharmacy) rotation: each night, certain pharmacies stay open until 01:00 to 02:00. Look up "심야약국" + your district on Naver Map. Real emergency: hospital ER (응급실); larger hospitals near every district have one.
Jjimjilbang (찜질방) are the answer. ~₩10,000 to ₩15,000 buys 12 hours: shower, sauna, sleep room with mats and pillows. Major 24h ones: Dragon Hill Spa (Yongsan), SilOam Sauna (Seoul Station), Itaewon Land. Mens / womens areas separated; common rooms in mixed PJs.
Reliable
Watch out
Reliable
Watch out
Reliable
Watch out
Reliable
Watch out
Reliable
Watch out
Seoul subway last train is around 23:30, but 9Line 9 and a few others can be earlier. Check the platform indicator at every transfer; "막차" (last train) signs flash red. Set a 22:30 alarm if you're drinking.
Routes N15 (Gangnam) / N16 (Hongdae) / N26 (Jamsil) / N75 (Yeouido) are the most useful. Tap T-money like a regular bus, ₩2,500. The bus stops are marked with a blue moon icon at the top.
After midnight, street taxis sometimes refuse short routes or push for cash. Kakao T (English UI, card on file, fixed quote) avoids the haggle. Download before your trip.
If you land at ICN past 01:00 with no transit option, the Spa on Air sauna (T1 B1) is 24h, ~₩30,000 includes shower + sleep + breakfast voucher. Cheaper than an airport hotel.
Naver Map / Kakao Map listings can be out of date. Call the venue if you are pinning a 4am plan. Convenience stores (chain-guaranteed) and Kakao T (always-on) are the only "no need to verify" categories.
Updated May 2026. Subway last-train times verified against Seoul Metro May 2026 timetable; jjimjilbang and pharmacy listings are category-level (verify each venue on Naver Map before a 4am plan).
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