He played 12:14 of ice time alongside Wayne Simmonds and Matt Read in a 3–1 loss, giving the Flyers five more games to decide whether he remained in the NHL or returned to major juniors.

[20] He continued to have a breakout season and recorded 24 goals and 26 assists in 29 games by December, earning him the captaincy title for Canada under-20 team at the 2013 World Junior Championships.

[21] He ended the season as the second-leading scorer for the Generals as Oshawa finished first in the OHL's East Division and reached the Eastern Conference finals.

[22] Flyers head coach Craig Berube later said that choosing to reassign Laughton to the OHL "helped him" and called him "one of the best players in all of junior hockey.

"[23] Laughton was invited to the Flyers' training camp prior to the 2014–15 season, but was reassigned to their new AHL affiliate, the Lehigh Valley Phantoms, on October 1, 2014, after being a healthy scratch for one game.

[27] As the Flyers met with the Washington Capitals during the 2016 Stanley Cup playoffs, Laughton suffered an injury following a collision into the boards and was stretchered off the ice.

[29] Following his shortened postseason berth, Laughton returned to the Flyers during their 2016 preseason games but suffered a lower-body injury and was expected to miss three to four weeks at the beginning of the 2016–17 season.

[32] He spent the majority of his playing time alongside Taylor Leier, Michael Raffl or Jordan Weal, and ended the season with the team's third-best possession numbers.

[34] Laughton suffered a broken finger on his right hand at the start of the 2019–20 season during the second period of a 7–4 win over the Columbus Blue Jackets, and was expected to miss four weeks.

[39] When the NHL returned to play after being delayed due to the COVID-19 pandemic, Laughton and the Flyers faced off against the Montreal Canadiens in the first round of the 2020 Stanley Cup playoffs as the first seed in the Eastern Conference after winning the round-robin qualifying tournament.

[42] As they faced elimination against the Islanders by game five, Laughton helped the team recover from a lost lead and recorded the overtime game-winning goal off an assist from Konecny.

[46] On February 7, 2021, Laughton recorded his first career hat trick in a 7–4 win against the Washington Capitals, with goals on Vítek Vaněček and Craig Anderson.

[50] Following his first season in the OHL, Laughton was invited to compete for Canada under-18 team at the 2011 Ivan Hlinka Memorial Tournament,[51] where he won a gold medal.

[52] As a result of a successful 2011–12 season, Laughton was named to Canada's roster for the 2012 IIHF World U18 Championships,[53] during which he recorded seven points and led the team to a bronze medal.

[54] On May 5, 2023, Laughton was named to Canada men's national ice hockey team at the 2023 IIHF World Championship where he recorded three goals and five assists in ten games and won a gold medal.