Youth Dárdai began his youth career at Seeburger SV in 2006, before moving to 1. FC Wilmersdorf in 2009. In 2011, Dárdai moved to the youth academy of
Hertha BSC, following his father's retirement from football after 14 years with Hertha.
Hertha BSC Dárdai made his debut for
Hertha BSC II on 18 March 2017, starting in an away match against
Carl Zeiss Jena in the
Regionalliga Nordost. Dárdai scored to put Hertha 2–1 ahead, before being substituted out with the match finishing as a 2–2 draw. On 2 November 2017, Dárdai made his professional debut for
Hertha BSC under his father in the
UEFA Europa League, coming on as a substitute in the 79th minute for
Alexander Esswein in the 2–0 home win against Ukrainian club
Zorya Luhansk.
Fehérvár FC On 5 January 2021, Dárdai signed with
Fehérvár FC of the
Nemzeti Bajnokság I.
Return to Hertha BSC On 25 July 2023, Dárdai returned to
Hertha BSC on a three-year contract, joining his brother Márton and his father and Hertha manager
Pál Dárdai. He scored his first goal in the
2023–24 DFB-Pokal against
FC Carl Zeiss Jena in a 5–0 victory on 12 August 2023. On 16 February 2024, he scored a goal in a 3–2 victory over
1. FC Magdeburg in the
2023–24 2. Bundesliga season. On 12 April 2024, he scored twice in a 4–0 victory against
FC Hansa Rostock.
Puskás Akadémia On 8 July 2025, he was signed by
Nemzeti Bajnokság I club
Puskás Akadémia FC. He signed a contract to summer 2029. ==International career==