Kennedy spokeswoman Melissa Wagoner said Friday that Kennedy was continuing his treatment and physical rehabilitation in warmer weather.
The Massachusetts Democrat has been working from Florida recently, and had returned to the Senate on Monday for an earlier stimulus vote.
Wagoner said Kennedy probably won't be on hand for the final vote since Democrats don't need his vote for final passage. She said Kennedy will travel back and forth until the weather gets warmer in Washington.
Kennedy suffered a seizure on Inauguration Day last month.