 After the civil war ended in 1939 the team dissolved and Lángara traveled to Argentina in search of a new team, as a republican he could not return to Spain without risking harsh repression.On the advice from his teammate Ángel Zubieta, he joined San Lorenzo de Almagro.His debut in 1939 was against perennial league champions River Plate and he scored 4 goals in a 4–2 victory, after arriving in Argentina on the morning of the same day.