Final standings
Note: GP = Games played, W = Wins, L = Losses, T = Ties, Pts = Points, GF = Goals for, GA = Goals against
Note: Teams that qualified for the playoffs are highlighted in bold.
Divisions: PTK – Patrick, ADM – Adams
bold – Qualified for playoffs; p – Won Presidents' Trophy
June 17, 1989 - Sylvain Turgeon traded to the New Jersey Devils for Pat Verbeek.
October 2, 1989 - Whalers acquire Mikael Andersson from the Buffalo Sabres in the waiver draft.
October 7, 1989 - Kevin Sullivan traded to the Minnesota North Stars for Mike Berger.
October 10, 1989 - Norm Maciver traded to the Edmonton Oilers for Jim Ennis.
October 16, 1989 - Whalers sign defenseman Steve Dykstra as a free agent.
October 31, 1989 - Jim Thomson traded to the New Jersey Devils for Chris Cichocki.
December 1, 1989 - Paul MacDermid traded to the Winnipeg Jets for Randy Cunneyworth.
March 3, 1990 - Steve Dykstra traded to the Boston Bruins for Jeff Sirkka.
March 5, 1990 - Mike Liut traded to the Washington Capitals for Yvon Corriveau.
March 6, 1990 - Marc Laforge traded to the Edmonton Oilers for Cam Brauer.