Junior On May 7, 2020, Finley was drafted first overall by the
Madison Capitols in phase one of the USHL draft. Finley began his junior hockey career with the
Chicago Steel. During the
2020–21 season, he recorded one goal and five assists in 39 games and helped the Steel win the
Clark Cup. During the
2021–22 season, in his draft year, he recorded 12 goals and 17 assists in 39 regular season games for the Capitols. He also scored five goals and five assists in 14 playoff games, as he helped lead the Capitols to the Eastern Conference finals. In November 2021, he suffered a broken collarbone and missed three months of action. On October 17, 2022, Finley was named an alternate captain of the Capitols for the
2021–23 season. On January 13, 2023, he was traded back to the Steel. Prior to the trade, he recorded 12 goals and 17 assists in 39 games for the Capitols. He finished the season with 15 goals and 23 assists in 32 games for the Steel and two goals and two assists in six playoff games.
College in February 2024 Finley began his
collegiate career at
Wisconsin during the
2023–24 season. In his freshman year, he recorded ten goals and six assists in 36 games. His 16 points ranked third on the team among freshmen. Following his freshman year he gained ten pounds of muscle. Entering the 2024
Holiday Face–Off, he was tied for the NCAA lead with 12 goals. He scored at least a point in 15 of Wisconsin's first 18 games.
Professional On April 15, 2026, the New York Islanders announced that the club had signed Quinn Finley to a two-year, entry-level contract. ==International play==