Season 1 of It's Always Sunny in Philadelphia premiered on August 4, 2005
The first season of It's Always Sunny in Philadelphia, premiered on FX on August 4, 2005. The season contains 7 episodes and concluded airing on September 15, 2005.
Season 2
8.5
2006 • 10 Episodes
Season 2 of It's Always Sunny in Philadelphia premiered on June 29, 2006
The second season of It's Always Sunny in Philadelphia, premiered on FX on June 29, 2006. The season contains 10 episodes and concluded airing on August 17, 2006.
Season 3
8.5
2007 • 15 Episodes
Season 3 of It's Always Sunny in Philadelphia premiered on September 13, 2007
The third season of It's Always Sunny in Philadelphia, premiered on FX on September 13, 2007. The season contains 15 episodes and concluded airing on November 15, 2007.
Season 4
8.4
2008 • 13 Episodes
Season 4 of It's Always Sunny in Philadelphia premiered on September 18, 2008
The fourth season of It's Always Sunny in Philadelphia, premiered on FX on September 18, 2008. The season contains 13 episodes and concluded airing on November 20, 2008.
Season 5
8.4
2009 • 12 Episodes
Season 5 of It's Always Sunny in Philadelphia premiered on September 17, 2009
The fifth season of It's Always Sunny in Philadelphia, premiered on FX on September 17, 2009. The season contains 12 episodes and concluded airing on December 10, 2009.
Season 6
8.2
2010 • 13 Episodes
Season 6 of It's Always Sunny in Philadelphia premiered on September 16, 2010
The sixth season of It's Always Sunny in Philadelphia, premiered on FX on September 16, 2010. The season contains 14 episodes and concluded airing on ...Read more
Season 7
7.9
2011 • 13 Episodes
Season 7 of It's Always Sunny in Philadelphia premiered on September 15, 2011
The seventh season of It's Always Sunny in Philadelphia, premiered on FX on September 15, 2011. The season contained 13 episodes, and concluded airing...Read more
Season 8
8.2
2012 • 10 Episodes
Season 8 of It's Always Sunny in Philadelphia premiered on October 11, 2012
The eighth season of It's Always Sunny in Philadelphia, premiered on FX on October 11, 2012. This season consisted of 10 episodes, and concluded airin...Read more
Season 9
8.0
2013 • 10 Episodes
Season 9 of It's Always Sunny in Philadelphia premiered on September 4, 2013
The ninth season of It's Always Sunny in Philadelphia, premiered on FXX on September 4, 2013. This season consisted of 10 episodes, and concluded airi...Read more
Season 10
8.1
2015 • 10 Episodes
Season 10 of It's Always Sunny in Philadelphia premiered on January 14, 2015
The tenth season of It's Always Sunny in Philadelphia, premiered on FXX on January 14, 2015. This season consisted of 10 episodes, and concluded airing on March 18, 2015.
Season 11
7.9
2016 • 10 Episodes
Season 11 of It's Always Sunny in Philadelphia premiered on January 6, 2016
The eleventh season of It's Always Sunny in Philadelphia, premiered on FXX on January 6, 2016. This season consisted of 10 episodes, and concluded air...Read more
Season 12
7.8
2017 • 10 Episodes
Season 12 of It's Always Sunny in Philadelphia premiered on January 4, 2017
In season twelve, Mac, Dennis, Charlie, Dee and Frank tackle all new adventures that include going to a waterpark, dealing with a Wolf Cola PR nightma...Read more
Season 13
7.4
2018 • 10 Episodes
Season 13 of It's Always Sunny in Philadelphia premiered on September 5, 2018
The Gang returns... mostly... in Season 13. Mac, Charlie, Dee, and Frank return to their duplicitous, scheming ways at Paddy’s Pub, while Dennis takes...Read more
Season 14
7.5
2019 • 10 Episodes
Season 14 of It's Always Sunny in Philadelphia premiered on September 25, 2019
The 14th season guns for the Best 14th Season accolade as the Gang goes to extremes for the role – Mac learns a new language, Charlie does a period pi...Read more
Season 15
7.5
2021 • 8 Episodes
Season 15 of It's Always Sunny in Philadelphia premiered on December 1, 2021
In season fifteen, the gang finds themselves at a crossroads in this strange new world in the wake of Covid-19 and all things 2020. The rules are chan...Read more
Season 16
8.6
2023 • 8 Episodes
Season 16 of It's Always Sunny in Philadelphia premiered on June 7, 2023
In Season sixteen, it’s a challenge for Ronald “Mac” MacDonald, Charlie Kelly, Dennis Reynolds, Dee Reynolds, and Frank Reynolds who yearn for the pas...Read more