While he was considered a throw-in for the Flyers who made the trade to re-acquire Renberg, Langkow flourished in Philadelphia. He finished the season with 14 goals combined between Tampa and Philadelphia, and his development as a playmaking centre earned him the Pelle Lindbergh Memorial from his teammates as the Flyers' most improved player. They re-signed Langkow to a two-year contract extension following the season. He set new personal highs in goals and assists in 1999–2000, finishing with 50 points and helping the Flyers reach the Eastern Conference Final in the 2000 Stanley Cup Playoffs. Despite missing 11-games with two broken feet, Langkow improved to 54 points in the 2000–01 season.