Seinfeld, along with his collaborator Colin Quinn, will donate 100 percent of the proceeds to local relief organizations.
Seinfeld and Quinn announced Tuesday a performance had been added to their schedule Dec. 19 at the NYCB Theater in Westbury, Long Island.
The show will follow previously sold-out performances Thursday at the Walt Whitman Theater in Brooklyn and at the St. George Theater in Staten Island Dec. 6.
"I grew up on Long Island, and New York City is home," said Seinfeld in a statement Wednesday. "This is a tough time for this area, and we're just glad to be able to help in the recovery."