"Has to go" is a common phrase used to express the need to leave a certain place or situation. However, there are many synonyms that can be used to convey the same message. "Needs to depart," "must leave," "has to head out," "must go," "should exit," and "needs to scram" are just a few examples of alternative phrases that can be used. It's important to choose the appropriate synonym based on the tone and context of the conversation. Whether it's a formal or casual conversation, using diverse vocabulary can add more color and depth to your language.