He honored his first international cape in Algeria on March 1, 2014 against the Ivory Coast team at Ernest Dufer Stadium (Toulouse). Then he participated in 2015 in the Crescent Cup organised by World Rugby and the Islamic Solidarity Sports Federation and in their first official match against Kazakhstan after this session Chellat did not return to the Algeria national team again. until 2018 in the Rugby Africa Silver Cup where he participated in three games and contributed to the rise of the Algerian team to the Rugby Africa Gold Cup for the first time with the major continent such as Kenya and Namibia.
