with 67 episodes premiered on September 4, 2007

Bonus features from Season DVD sets and TV promos.

with 7 episodes 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.

with 10 episodes 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.

with 15 episodes 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.

with 13 episodes 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.

with 12 episodes 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.

with 13 episodes 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 December 9, 2010 with the hour-long Christmas spe… see more

with 13 episodes 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 on December 15, 2011. The episode "How Mac Got F… see more

with 10 episodes 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 airing on December 20, 2012.

with 10 episodes 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 airing on November 6, 2013.

with 10 episodes 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.

with 10 episodes 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 airing on March 9, 2016.

with 10 episodes 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 nightmare, and actually spending a whole day tending bar!

with 10 episodes 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 on the new role of father in North Dakota. Even … see more

with 10 episodes 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 piece, Dennis attempts a one-act play, Dee cuts her… see more

with 8 episodes 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 changing quicker than anyone can keep up with, despit… see more

with 8 episodes 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 past as they attempt to survive in 2023. This year a… see more