Joao Correa of Concord, Ohio, says he had a bathroom emergency but his path was blocked by a beverage cart during the March 28 flight from Honduras to Atlanta. He asked if he could use the lavatory in business class, but was told no.
Federal Aviation Administration policy requires passengers on international flights to use the restroom in their seating class.
Authorities say the 43-year-old man is accused of pulling and twisting the flight attendant's arm. He was arrested when the plane landed in Atlanta and charged with assault.
Correa was released after two nights in jail, pending a hearing.