He was named to the Liiga All-Star Team and captured the Urpo Ylönen trophy as the league's best goaltender.

[2] After his selection by the Columbus Blue Jackets, 173rd overall, in the 2018 NHL Entry Draft, Vehviläinen returned to play with Oulun Kärpät for the 2018–19 season.

[4] With the commencement of the North American season, Vehviläinen was assigned by the Blue Jackets returning to AHL affiliate, the Cleveland Monsters.

After one game with the Monsters, Vehviläinen was initially recalled by the Blue Jackets to the taxi squad before making his NHL debut in relief of Joonas Korpisalo, allowing 1 goal in the 11 minutes remaining of a 5–0 defeat to the Dallas Stars on 6 March 2021.

[5] Reassigned to the Monsters, Vehviläinen was traded by the Blue Jackets to the Toronto Maple Leafs in exchange for Mikko Lehtonen on 12 March 2021.