"Weekend" debuted at number ten on South Korea's
Gaon Digital Chart in the chart issue dated July 4–10, 2021; on its component charts, the song debuted at number two on the Gaon Download Chart, and number 21 on the Gaon Streaming Chart. It ascended to number four on the Gaon Digital Chart in the following week, and number five on the Gaon Streaming Chart in the chart issue dated August 8–14, 2021. The song also spent 15 consecutive weeks in the Top 10 on the Gaon Digital Chart. The song debuted at number seven and number 58 on
Billboard World Digital Songs and
K-pop Hot 100, respectively, in the chart issue dated July 17, 2021. The song ascended to number four on the
Billboard K-pop Hot 100 in the chart issue dated September 18, 2021. The song debuted at number 16 on the
Billboard South Korea Songs in the chart issue dated May 7, 2022. In Singapore, the song debuted at number seven on the
RIAS Regional Chart in the chart issue dated July 9–15, 2021. Globally, the song debuted at number 181 on
Billboard Global Excl. U.S. in the chart issue dated on July 24, 2021. ==Promotion==