Incheon Utd U18: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-16 | Jun-seop Lee | Incheon Utd U18 | Incheon Utd. | — |
| 2025-01-01 | Min-jun Wang | Incheon Utd U18 | Tongmyong Univ. | — |
| 2023-01-01 | Kyung-sub Park | Incheon Utd U18 | Sun Moon Uni. | — |
| 2023-01-01 | Jun-seop Lee | Incheon Utd U15 | Incheon Utd U18 | — |
| 2022-01-01 | Min-jun Wang | Incheon Utd U15 | Incheon Utd U18 | — |
| 2022-01-01 | Ma-ho Chung | Incheon Utd U18 | Shinpyeong HS | — |
| 2021-01-01 | Ma-ho Chung | FC Mohyeon U15 | Incheon Utd U18 | — |
| 2020-01-01 | Kyung-sub Park | Incheon Utd U15 | Incheon Utd U18 | — |
| 2019-01-01 | Seong-min Kim | Incheon Utd U18 | Yong In Univ. | — |
| 2019-01-01 | Seong-hoon Cheon | Incheon Utd U18 | Incheon Utd. | — |
| 2019-01-01 | Ho-jae Lee | Incheon Utd U18 | Korea University | — |
| 2018-01-01 | Woo-yeong Jeong | Incheon Utd U18 | Incheon Utd. | — |
| 2017-01-01 | Jin-ya Kim | Incheon Utd U18 | Incheon Utd. | — |
| 2016-01-01 | Seong-min Kim | Osang MS | Incheon Utd U18 | — |
| 2016-01-01 | Seong-hoon Cheon | Incheon Utd U15 | Incheon Utd U18 | — |
| 2016-01-01 | Ho-jae Lee | Onehunga Yth. | Incheon Utd U18 | Free |
| 2016-01-01 | Dong-heon Kim | Incheon Utd U18 | Yong In Univ. | — |
| 2015-01-01 | Woo-yeong Jeong | Incheon Utd U15 | Incheon Utd U18 | — |
| 2014-01-01 | Tae-heui Lee | Incheon Utd U18 | Incheon Utd. | — |
| 2014-01-01 | Jin-ya Kim | Incheon Utd U15 | Incheon Utd U18 | — |