BEIJING — China has deported an American businesswoman convicted and sentenced on a spying charge, and she arrived in the United States on Friday, her husband said.

The deportation ended uncertainty about the fate of the Houston businesswoman, Phan Phan-Gillis, known as Sandy, who was sentenced on Tuesday by a court in southern China to three and a half years in prison on an espionage charge. The judge said Ms. Phan-Gillis would be deported, but left unclear whether she would have to serve her sentence first.

On Friday, however, Ms. Phan-Gillis’s husband, Jeff Gillis, who has campaigned to overturn the spying charge and to win her freedom, said she had been put on a flight from Guangzhou in southern China to Los Angeles, and had arrived there that day.

“Many of Sandy’s friends and family members have been crying tears of joy throughout the day,” Mr. Gillis said in an email. He continued to reject the accusation that his wife had been a spy for the American authorities, and said her conviction was manifestly unjust.