In early 2022, Subiabre received a call-up from the
Chilean under-17 side, and went on to play in one
friendly matches against
Colombia. However, in September of the same year, he accepted a call-up from Argentina under-17 coach
Pablo Aimar, and would go on to make his debut for the side at the 2022 Copa Ciudad de Ezeiza, coming on as a second-half substitute in a 4–0 win against
Peru. In Argentina's final group game, against
Poland, Subiabre scored the third goal of the game as Argentina went on to win 4–0. ==Style of play==