KTX 121 · Seoul → Busan

Seoul 08:12 → Busan 11:33 · 8 stops · Data for 30 runs from 9 Oct – 7 Nov 2026

60% of stops within 5 min · 12 of 30 days on time at Busan · +8 min typical delay when late

Delay at every stop in the past 30 days

Delay in minutes · scheduled arrival times
08:12Seoul5 min
08:21Yeongdeungpo
08:44Suwon
09:55Daejeon
10:39Dongdaegu
10:58Gyeongju
11:10Ulsan (Tongdosa)
11:33Busan
Within 5 minMore than 5 min lateOne dot per recorded day
Reported delays by day and stop
DateYeongdeungpoSuwonDaejeonDongdaeguGyeongjuUlsan (Tongdosa)Busan
2026-10-09+3 min+2 min+4 min+4 min+7 min+8 min+10 min
2026-10-10+4 min+3 min+5 min+3 min+4 min+4 min+5 min
2026-10-11+7 min+8 min+8 min+6 min+7 min+8 min+10 min
2026-10-12+4 min+3 min+3 min+1 min+2 min+2 min+3 min
2026-10-13+5 min+5 min+8 min+7 min+8 min+9 min+10 min
2026-10-14+4 min+1 min+1 min0 min+1 min+2 min+2 min
2026-10-15+5 min+4 min+3 min+1 min+2 min+2 min+2 min
2026-10-16+6 min+4 min+4 min+3 min+5 min+6 min+7 min
2026-10-17+2 min+2 min0 min0 min+3 min+4 min+5 min
2026-10-18+1 min+1 min+1 min0 min+1 min+2 min+4 min
2026-10-19+2 min+1 min+1 min+1 min+2 min+3 min+5 min
2026-10-20+4 min+6 min+5 min+3 min+5 min+7 min+11 min
2026-10-21+3 min+4 min+7 min+7 min+7 min+8 min+8 min
2026-10-22+7 min+6 min+4 min+3 min+5 min+6 min+8 min
2026-10-23+5 min+4 min+7 min+5 min+6 min+7 min+8 min
2026-10-24+1 min0 min+2 min+6 min+10 min+10 min+12 min
2026-10-25+1 min+1 min+3 min+1 min+2 min+2 min+2 min
2026-10-26+3 min+1 min+1 min0 min+3 min+4 min+7 min
2026-10-27+7 min+5 min+4 min+1 min+3 min+3 min+4 min
2026-10-28+3 min+3 min+4 min+1 min+2 min+4 min+4 min
2026-10-29+3 min+6 min+5 min+4 min+5 min+6 min+6 min
2026-10-30+9 min+8 min+8 min+6 min+7 min+8 min+9 min
2026-10-31+6 min+5 min+7 min+7 min+10 min+10 min+11 min
2026-11-01+11 min+13 min+13 min+12 min+13 min+14 min+16 min
2026-11-02+2 min+3 min+2 min+2 min+3 min+4 min+4 min
2026-11-03+3 min+2 min+3 min+2 min+3 min+4 min+5 min
2026-11-04+4 min+3 min+3 min+2 min+4 min+5 min+6 min
2026-11-05+3 min+8 min+7 min+11 min+14 min+14 min+15 min
2026-11-06+15 min+15 min+17 min+16 min+18 min+18 min+21 min
2026-11-07+1 min+8 min+8 min+7 min+8 min+9 min+12 min

Day by day

Final-stop delay at Busan
Final-stop delay by day
DateFinal stop
2026-10-09Final stop: +10 min
2026-10-10Final stop: +5 min
2026-10-11Final stop: +10 min
2026-10-12Final stop: +3 min
2026-10-13Final stop: +10 min
2026-10-14Final stop: +2 min
2026-10-15Final stop: +2 min
2026-10-16Final stop: +7 min
2026-10-17Final stop: +5 min
2026-10-18Final stop: +4 min
2026-10-19Final stop: +5 min
2026-10-20Final stop: +11 min
2026-10-21Final stop: +8 min
2026-10-22Final stop: +8 min
2026-10-23Final stop: +8 min
2026-10-24Final stop: +12 min
2026-10-25Final stop: +2 min
2026-10-26Final stop: +7 min
2026-10-27Final stop: +4 min
2026-10-28Final stop: +4 min
2026-10-29Final stop: +6 min
2026-10-30Final stop: +9 min
2026-10-31Final stop: +11 min
2026-11-01Final stop: +16 min
2026-11-02Final stop: +4 min
2026-11-03Final stop: +5 min
2026-11-04Final stop: +6 min
2026-11-05Final stop: +15 min
2026-11-06Final stop: +21 min
2026-11-07Final stop: +12 min
9 Oct7 Nov
Within 5 min6–1011–2021–30Over 30Unavailable or missing