The fifteenth season of the American television sitcom series It's Always Sunny in Philadelphia premiered on FXX on December 1 and concluded on December 22, 2021. This season had next day availability on FX on Hulu and FXNOW. The season consists of eight episodes and makes the series the longest-running live-action scripted comedy series in...
.svg/500px-Flag_of_the_United_States_(DDD-F-416E_specifications).svg.png)