Klas Dahlbeck was born on July 6, 1991 in Katrineholm, Sweden. The product of Linkopings HC of the Swedish Elite League was drafted in the third round, 79th overall, by the Chicago Blackhawks in the 2011 NHL Entry Draft.
After playing four seasons in Sweden, Dahlbeck would be assigned to the Blackhawks AHL affiliate, the Rockford IceHogs. Dahlbeck would play most of three seasons with the IceHogs before he would be promoted to the NHL on December 6, 2014 in a 3-1 victory over the Nashville Predators.
Near the trade deadline on February 28, 2015, Dahlbeck would be traded to the Arizona Coyotes, along with a first round draft pick, for Antoine Vermette.