Junior The
Ottawa 67's of the
Ontario Hockey League (OHL), who were entering a rebuilding year after finishing the
2012–13 season with a 16–46–6 record, selected Konecny first overall in the 2013 OHL draft, an honour that came with the
Jack Ferguson Award for the top OHL draft pick of the year. Younger than most of his new teammates and opponents at only 16, Konecny registered two assists in his OHL debut, a 5–4 win over the
Belleville Bulls. While the 67's once again missed the OHL playoffs, Konecny had a dominant rookie season, scoring 26 goals and 44 assists while playing on an offensive line alongside Erik Bradford and Ryan Van Stralen. Leading all OHL rookies in scoring for the
2013–14 season, Konecny was named Rookie of the Month on four out of six possible opportunities, and at the end of the season, he received the
Emms Family Award for OHL Rookie of the Year. He was also named to the OHL First All-Rookie team that year at
centre. Going into his second year with the 67's, Konecny was named team
captain for the
2014–15 season. Although he had a slow start to the season, with only three goals and 12 points through his first 18 games, Konecny soon recovered, finishing second on the 67's in scoring with 29 goals and 68 points in 60 regular season games. Ottawa reached the playoffs, and Konecny recorded an additional three goals and 10 points in five games there. That year, the
Philadelphia Flyers of the
National Hockey League traded two picks in the
2015 NHL entry draft to the
Toronto Maple Leafs in exchange for the 24th overall pick, which they used to draft Konecny in the first round. The Flyers' other first-round pick,
Ivan Provorov of the
Brandon Wheat Kings, Konecny signed an
entry-level contract with Philadelphia on July 16, 2015. At the end of the season, the NHL awarded Konecny the inaugural
E.J. McGuire Award of Excellence, given to the
prospect who "best exemplifies the commitment to excellence" in hockey "through strength of character, competitiveness and athleticism." After attending the Flyers' training camp, Konecny was sent back to his junior hockey team in time for the start of the
2015–16 OHL season. There, he posted nine goals and 45 points in his third OHL season before becoming part of a major trade with the
Sarnia Sting on January 6, 2016. Konecny and Sam Studnicka were sent to Sarnia in exchange for
Sasha Chmelevski, Chase Campbell, and eight picks in that year's OHL draft, with an option for two extra draft picks if Konecny spent the
2016–17 season in the OHL as well. With Sarnia, Konecny played with future NHL players
Jordan Kyrou,
Jakob Chychrun, and
Pavel Zacha. After the trade, Konecny scored 23 goals and 56 points in the remaining 31 games of the regular season, and added a goal and two assists in his first two playoff games before a shoulder injury put his postseason run on pause. Although Konecny was meant to rejoin the team for Game 5 of the first-round OHL playoff series, Sarnia was swept in four games by the
Plymouth Whalers.
Professional On October 10, 2016, Flyers
general manager Ron Hextall announced that both Konecny and Provorov had been named to the opening-night roster for the
2016–17 season, and that they were foregoing the usual nine-game tryout period for junior-aged rookies. Konecny was set to begin the season on the second offensive line, alongside
Sean Couturier and
Jakub Voráček. His first two professional hockey points came in his NHL debut on October 15, with two assists in a 4–2 defeat of the
Los Angeles Kings. Konecny's first NHL goal came on October 26, in the third period of a 4–3 win over the
Buffalo Sabres. His goal broke open the scoring for Philadelphia, who recorded three
power play goals in the third period to take Buffalo to overtime and an eventual shootout win. His first major penalty for fighting came a month later, as the Konecny went up against the
Brandon Pirri of the
New York Rangers on November 25. By January 2017, Konecny had been flipped from the
left wing to the right, and had been moved up to the top line with
Claude Giroux and
Michael Raffl, although coach
Dave Hakstol continued to shift skaters around while attempting to find a rhythm for the team. After taking a hit against the
St. Louis Blues on February 6, Konecny was confined to a
walking boot with leg and ankle injuries, and was expected to miss four to six weeks of the season. He missed nine games before returning to the lineup on March 4 for a 2–1 loss to the
Washington Capitals, playing on the fourth-line in order to slowly return to full skating. Overall, Konecny had an uneven rookie season, with 11 goals and 17 assists in 68 games and a ±0
plus–minus score. Konecny started the
2017–18 season in a
sophomore slump, with only one goal in the first 16 games of the season. Hakstol voiced concerns that Konecny was "trying to put a little too much emphasis on scoring", which was limiting his impact on the rest of the game. After being demoted to the fourth line with
Scott Laughton and
Taylor Leier, Konecny scored his second goal of the season on December 13, with a tying goal in the Flyers' eventual 4–2 win over the Maple Leafs. He was able to turn his performance around in the second half of the season, recording 33 points in the last 41 regular season games for a total of 24 goals and 47 points in 81 contests. Most of his success came after being moved back up to the first line with Giroux and Couturier. The one regular season game he missed was on February 22 against the
Columbus Blue Jackets, following a left foot injury sustained in the previous game. The Flyers faced division rivals the
Pittsburgh Penguins in the first round of the
2018 Stanley Cup playoffs, and Konecny scored his first NHL postseason goal in Game 2, which the Flyers took 5–1. The Flyers ultimately fell to the Penguins in six games. Heading into the
2018–19 season, Hakstol wanted to give Konecny a chance not only as the top line right winger, but on the Flyers'
penalty kill unit, which had suffered the previous year. Through the first 10 games of the season, however, a number of skaters saw their positions rotate, with Konecny playing at various points alongside Giroux, Couturier,
Nolan Patrick,
Oskar Lindblom, and
Jordan Weal. His position on the team solidified when the Flyers made a number of front office moves in December, with both Hextall and Hakstol ousted from their respective positions. Finishing the year on a line with Giroux and
James van Riemsdyk, Konecny scored 24 goals and recorded 49 points while playing all 82 regular season games. While his numbers were similar to the previous season, Konecny's output was more consistent in 2018–19: his worst stretch involved six points in 14 games in December, compared to the previous season's first-half drought. A
restricted free agent during the 2019 off-season, Konecny's
agent and the Flyers spent the summer negotiating a potential contract extension, with disagreements arising over Konecny's
qualifying offer. On September 16, the Flyers signed Konceny to a six-year, $33 million contract extension that carried an average annual value of $5.5 million. After a strong start to the season in which he led the Flyers with 11 goals and 17 assists, Konecny was removed from a game against the
Ottawa Senators on December 7 after taking a hit from
Mark Borowiecki, and he was indefinitely placed on concussion protocols. He missed three games, all of which the Flyers lost, before returning to the lineup on December 17 in time for a 4–1 win over the
Anaheim Ducks. Konecny received his first
NHL All-Star Game invitation that season, where he recorded three assists in the
Metropolitan Division's 9–5 loss to the
Atlantic Division All-Star team. By the time that the
2019–20 season was indefinitely paused due to the
COVID-19 pandemic, Konecny led the team in scoring with 24 goals and a career-high 61 points in 66 games. When the NHL returned to play for the
2020 Stanley Cup playoffs, Konecny was invited to join the team in the Toronto "bubble", where he played on a line with Laughton and
Kevin Hayes. Konecny was unable to carry his regular season momentum into the playoffs, with no goals but seven assists in 16 postseason games, as the Flyers fell to the
New York Islanders in the second round. of the
Seattle Kraken in 2023 Konecny scored his first career
hat trick in the second game of the
2020–21 season, lifting the Flyers to a 5–2 win over the Penguins. After opening the season with five goals in as many games, however, Konecny entered a slump, with only four shots in the next seven matches. When the Flyers suffered an outbreak of the
COVID-19 virus, Konecny was removed from play on February 14. He returned on March 2, playing on the fourth line with Raffl and
Connor Bunnaman, and scored his first goal in nine games on March 6. While he followed his 12-game goalless drought in March with a scoring surge in April and more consistent offensive play through the end of the season, Konecny was one of several younger Flyers who saw a noticeable downturn in the 2020–21 season. He played in 50 games of the truncated 56-game season, recording 11 goals and 34 points in the process. Unlike the other players diagnosed with COVID-19, Konecny's production increased after he recovered from the virus, rising from 0.67 to 0.80 points per game. On July 25, 2024, the Flyers signed Konecny to an eight-year, $70 million contract extension. By mid January 2026, during the
2025-26 season Konecny had 38 points with 14 goals and 24 assists and a +14 rating in 42 games, and had played in a streak of 143 games before receiving an upper body injury during a game against the
Toronto Maple Leafs and being considered a day-to-day status. After returning to practice a few days later, Konecny took a puck to his knee resulting in him ending practice. ==International play==