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.
All Episodes
S5 E1: The Gang Exploits the Mortgage Crisis
S5 E2: The Gang Hits the Road
S5 E3: The Great Recession
S5 E4: The Gang Gives Frank an Intervention
S5 E5: The Waitress Is Getting Married
S5 E6: The World Series Defense
S5 E7: The Gang Wrestles for the Troops
S5 E8: Paddy's Pub: Home of the Original Kitten Mittens