On April 3, 1965, Chumpitaz played his debut game with the
Peru national football team when Peru lost to
Paraguay, 1–0, in
Lima. On May 16, 1965, Chumpitaz played his debut
World Cup qualifier game where
Peru beat
Venezuela, 1–0, in
Lima. His debut international game came that same year as
Peru and
Venezuela held a rematch in
Caracas, with
Peru defeating the Venezuelans, 6–3. Chumpitaz secured his first World Cup action when
Peru national football team, winning 1–0 in Lima, and soon tied with
Argentina, 2–2, on August 31, 1969, in
Buenos Aires. Chumpitaz played his first World Cup game on June 2, 1970, when the Peru defeated
Bulgaria, 3–2, in
León, Mexico. Although Peru advanced to the quarterfinals of that World Cup, they were eliminated by
Brazil on June 14 in
Guadalajara, by a score of 4–2. Chumpitaz played for Peru's national team in the
Brazil Independence Cup, held between June 18 and 25, 1972, in
Manaus, Brazil. He helped his team to the championship game with a 1–0 victory over
Venezuela, but Peru lost in its group's final game to
Yugoslavia, 2–1. In 1975, Chumpitaz played for the national team that won the
Copa America held in
Colombia. Chumpitaz returned to the World Cup in 1978, when Peru played for the
FIFA's most heralded championship in
Argentina.
Peru played six games in that World Cup, winning two of them. Peru were eliminated after losing to hosts Argentina, 6–0. This would turn out to be Chumpitaz's last World Cup participation; he retired from the
Peru national football team after the team qualified for the
1982 World Cup, held in Spain. Chumpitaz played a total of 105 games with the national team.
International goals ==Honours==