The Seinfeld Festivus episode occurs in Season 9, Episode 10, titled “The Strike.” The episode also follows Elaine (Julia Louis-Dreyfus) as she does her best to get a free sandwich while ...
Festivus is an alternative holiday to Christmas celebrated by the Costanza family within the Seinfeld Universe. It was first introduced in Season 9, Episode 10, and was invented by Frank Constanza.