[1] Gimcheon Sangmu were promoted from the 2023 K League 2 after a one-year absence from the top flight.
Suwon Samsung Bluewings were relegated to 2024 K League 2 in the club's first absence from the top flight of Korean football.
[10] As a military-owned team, Gimcheon Sangmu are not allowed to sign any foreign players.
Daegu FC won 6–5 on aggregate and therefore both clubs remain in their respective leagues.
Jeonbuk Hyundai Motors won 4–2 on aggregate and therefore both clubs remain in their respective leagues.