Season 3 of Letterkenny premiered on Canadian video-on-demand service CraveTV (now Crave) on Canada Day, July 1, 2017.
A Region 1 DVD distributed by Universal Studios Home Entertainment was released on November 21, 2017. Season 3 was released on Hulu on December 27, 2018 for streaming in the United States.
Before Season 2 had even premiered, Crave TV ordered a third season of Letterkenny, announced a Northern Ontario Heritage Fund Corporation event in Sudbury on August 6, 2016 (Playback). At the event, Ontario Premiere Kathleen Wynn announced the provincial government would provide $2.3 million to support five productions shooting in Sudbury: Letterkenny as well as Game Changes, A Perfect Christmas, Love's Complicated, and Amélie et compagnie.
BellMedia announced the start of filming for season 3 on February 23, 2017 (Bell Media); in contrast to the first two seasons, Season 3 is set in the wintertime.
The season's release date of Canada Day was announced on June 1, 2017 (Bell Media). On December 17, 2018, Hulu announced it would release Season 3 as well as Season 4–6 and all intervening holiday specials on December 27.
|Overall No.||Season No.||Title||Synopsis|
|14||1||Sled Shack||The Hicks build a sled shack on the sleddin' trail. The Hockey Players, now leading goal scorers, try to motivate the Irish to get a W.|
|15||2||Puck Bunny||Wayne attempts to lure Up Country Degens to the sled shack but choosing the bait proves problematic.|
|16||3||Modeans 2||MoDean’s Grand Re-Opening gives Wayne the opportunity to confront Jivin Pete, who’s “no longer a good guy.”|
|17||4||Les Hiques||The Hicks go fishing on the Quebec border and meet their French doppelgangers.|
|18||5||The Battle for Bonnie McMurray||Bonnie invites the Hicks for a hot tub party and Dan, Daryl and Katy compete for her attention. Wayne and Rosie are #relationshipgoals.|
|19||6||Bradley Is a Killer||Gail's cousin Bradley returns to Letterkenny to be a bouncer at MoDean's. The Hicks love Bradley. Gae and the Skids reach a crossroads.|
Alexander De Jordy, who played "sideskid" Devon in seasons 1 and 2, did not return for season 3. His disappearance was noted in-universe, but never explained.