The WORST seasons of It's Always Sunny in Philadelphia

Every season of It's Always Sunny in Philadelphia ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of It's Always Sunny in Philadelphia!

Four egocentric friends who run a neighborhood Irish pub in Philadelphia try to find their way through the adult world of work and relationships. Unfortunately, their warped views and precarious judgments often lead them to trouble, creating a myriad of uncomfortable situations that usually only get worse before they get better.

Last Updated: 8/25/2025Network: FXXStatus: Continuing

7.17

236 votes

#1 - Season 15

First Aired 12/2/2021

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, despite herculean efforts from Mac, Charlie, Dennis, Dee, and Frank to continue business as usual. They must also now face the music and decide who they’ll become in the cultural upheaval that is 2021.

7.30

258 votes

#2 - Season 14

First Aired 9/26/2019

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 hair, and Frank performs a death scene.

7.40

292 votes

#3 - Season 13

First Aired 9/6/2018

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 without Dennis, the Gang has its hands full as Charlie hopes to have a child with The Waitress, Mac sets out to understand his newfound sexuality, Dee takes feminism to new heights, and Frank goes to great lengths for the Gang to experience the greatest moment in Philadelphia sports history – an Eagles Super Bowl victory.

7.51

676 votes

#4 - Season 1

First Aired 8/5/2005

7.66

176 votes

#5 - Season 16

First Aired 6/8/2023

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 alone, Mac battles with allergies and long-distance dating, Charlie takes on his long-forgotten sisters, Dee fights for rent control and women's athletics, Frank wrestles for his gun, and Dennis struggles to improve his mental health. At the end of the day, they're navigating 2023 with 16 years of baggage as a few figures from their past rear their heads.

7.83

53 votes

#6 - Season 17

First Aired 7/10/2025

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.

8.05

348 votes

#7 - Season 11

First Aired 1/7/2016

8.06

525 votes

#8 - Season 2

First Aired 6/30/2006

8.17

321 votes

#9 - Season 12

First Aired 1/5/2017

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!