In May 2019, Antuna was included in Gerardo Martino's preliminary list for the CONCACAF Gold Cup. He made his debut on 5 June in a friendly against Venezuela, appearing as a 68th minute substitute for Roberto Alvarado. After originally being left out of the definite list for the Gold Cup, he was included after Jorge Sánchez picked up an injury in a friendly match against Ecuador. In Mexico's opening match against Cuba, Antuna scored a hat-trick and provided an assist in the team's 7–0 rout; his first goal at the 2nd minute of the match is the fastest goal scored by Mexico in a Gold Cup tournament. He appeared in every match as Mexico would go on to win the tournament.