"Go off the air" is a common phrase used to describe when a television or radio program stops broadcasting. However, there are several synonyms for this phrase that can be used to convey the same message. Some synonyms include "sign off," "discontinue broadcasting," "end transmission," "cease airing," or "close down." Each of these phrases can be used in place of "go off the air" to describe the conclusion of a program's broadcast. These synonyms are useful for writers, broadcasters, and anyone else who needs to describe the cessation of a program's transmission.