Season
- Season 0 2007-09-04
- Season 1 2005-08-03
- Season 2 2006-06-28
- Season 3 2007-09-12
- Season 4 2008-09-17
- Season 5 2009-09-16
- Season 6 2010-09-15
- Season 7 2011-09-14
- Season 8 2012-10-09
- Season 9 2013-09-02
- Season 10 2015-01-12
- Season 11 2016-01-04
- Season 12 2017-01-03
- Season 13 2018-09-05
- Season 14 2019-09-25
- Season 15 2021-11-30
- Season 16 2023-06-06
- Season 17 2025-07-09
Season 17 Episode
- Season 6 Mac Fights Gay Marriage
- Season 6 Dennis Gets Divorced
- Season 6 The Gang Buys a Boat
- Season 6 Mac's Big Break
- Season 6 Mac and Charlie: White Trash
- Season 6 Mac's Mom Burns Her House Down
- Season 6 Who Got Dee Pregnant?
- Season 6 The Gang Gets a New Member
- Season 6 Dee Reynolds: Shaping America's Youth
- Season 6 Charlie Kelly: King of the Rats
- Season 6 The Gang Gets Stranded in the Woods
- Season 6 Dee Gives Birth
- Season 6 A Very Sunny Christmas
It's Always Sunny in Philadelphia - Season 6 Episode 8 The Gang Gets a New Member
8.29 48 minutes A blast from the past prompts the guys to expand membership, and Dee to re-consider her future.
