After the Uber incident, Wideman was traded three times in four months. On November 22, 2018, Wideman was traded by the Senators to the Edmonton Oilers in exchange for a 2020 conditional sixth-round pick. Over the course of a month with the Oilers, Wideman featured in only 5 games for 2 assists before he was dealt for a second time within the season, leaving the Oilers along with a 2019 third-round pick, to the Florida Panthers in exchange for Alex Petrovic on December 30, 2018. Wideman made his Panthers debut in a 4-3 overtime defeat to the Columbus Blue Jackets on January 5, 2019, before he was placed on waivers the following day. He cleared waivers and was assigned to AHL affiliate, the Springfield Thunderbirds, where he collected 3 goals and 13 points through 16 games from the blueline.