Myeongdong is one of the worst places in Seoul to tow a suitcase, which makes luggage storage worth sorting out first — narrow shopping lanes, packed by afternoon. It is also where a lot of trips end: one last skincare haul, then the airport. Good news is the station covers both storage options.
Coin lockers — 4 spots, about 126 units
Myeongdong Station is on Line 4, and its lockers sit in 4 spots totalling about 126 units, near exits 1 and 4.
Pricing is the network standard — ₩2,200 small, ₩3,300 medium, ₩4,400 large for the first four hours, then ₩500 / ₩800 / ₩1,000 per extra hour. The Myeongdong locker page shows each spot with how many of each size are free right now. Worth checking before you drag a case out into the lanes.
There is a staffed desk here too
Myeongdong is one of the six stations with a T-Luggage counter — the others are Seoul Station, Hongik Univ., Gangnam, Jamsil and Gimpo Airport. Staff take the bag over a counter, and the service also ships to hotels and the airport.
That is the answer when your case won't fit a large locker (50 × 90 × 60 cm inside) or you have several pieces.
The typical Myeongdong day
Checked out but flying later? Drop the suitcase in a locker, spend the afternoon in the shops with just a daypack, and swing back on your way out. A small locker easily holds a day of shopping bags.
If the case looks borderline, the sizes guide covers how to measure it. If a spot is full, try the other exit before leaving the station — that is what having four spots is for.
Hours
Lockers run roughly 05:00 to midnight; outside that window you can neither store nor collect. Go past your paid block and the door only opens after you settle the extra charge. On a late flight, check the staffed desk's own hours too. First time at the machines? The how-to for foreigners covers payment.
Sources: City of Seoul official guidance (T-Locker / T-Luggage) for fares, dimensions and the staffed-desk stations. Spot counts, unit counts, exits and live availability come from Seoul Open Data records.