Ilias Kostis is a professional footballer from GRE and is currently 24 years old. He is on the books of Atletico Madrid and wears shirt number 27. At international level, he features for Greece U21. His main role on the pitch is Defender. He measures 192cm in height and weighs 82kg. His estimated market valuation currently stands at 300K €.

His latest transfer saw him join Atletico de Madrid B from Atletico de Madrid U19 via on 2022-07-01.

Across the La Liga 2025-2026, Ilias Kostis appeared in 1 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.