Season 1

Season 1 of It's Always Sunny in Philadelphia premiered on August 3, 2005

Season 2

Season 2 of It's Always Sunny in Philadelphia premiered on June 28, 2006

Season 3

Season 3 of It's Always Sunny in Philadelphia premiered on September 12, 2007

Season 4

Season 4 of It's Always Sunny in Philadelphia premiered on September 17, 2008

Season 5

Season 5 of It's Always Sunny in Philadelphia premiered on September 16, 2009

Season 6

Season 6 of It's Always Sunny in Philadelphia premiered on September 15, 2010

Season 7

Season 7 of It's Always Sunny in Philadelphia premiered on September 14, 2011

Season 8

Season 8 of It's Always Sunny in Philadelphia premiered on October 9, 2012

Season 9

Season 9 of It's Always Sunny in Philadelphia premiered on September 2, 2013

Season 10

Season 10 of It's Always Sunny in Philadelphia premiered on January 12, 2015

Season 11

Season 11 of It's Always Sunny in Philadelphia premiered on January 4, 2016

Season 12

Season 12 of It's Always Sunny in Philadelphia premiered on January 3, 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

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

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

Season 15 of It's Always Sunny in Philadelphia premiered on November 30, 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

Season 16 of It's Always Sunny in Philadelphia premiered on June 6, 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

Season 17

Season 17 of It's Always Sunny in Philadelphia premiered on July 9, 2025

In Season 17 of It's Always Sunny in Philadelphia, the Gang craves money and parasitic social privileges. That's been plain since 2005. But they're also human beings.