In 2000, as the Expos had not secured an English radio or television contract, Van Horne broadcast the season over the Internet. With the Expos broadcast situation still unsettled for the 2001 season, Van Horne left at the end of 2000 to broadcast for the Marlins. Van Horne broadcast the last Expos home game in Montreal from the Marlins broadcast booth in 2004 on September 29, 2004—a 9–1 win for Miami.
Van Horne was named the 1996 recipient of the Jack Graney Award by the Canadian Baseball Hall of Fame for "A lifetime of media achievement",. He was inducted into the Canadian Baseball Hall of Fame on June 21, 2014, along with former Montreal Expos general manager Murray Cook and third baseman Tim Wallach.