The 24-year-old athlete was set to compete in the women's 200 meters at the Tokyo Games on Monday, but instead said team officials tried to forcibly send her back to Belarus against her wishes after she criticized sporting authorities.
Her drama-filled plight has dominated global headlines around the Games and while her comments were not overtly political, her case has heightened fears of the safety of those who speak out against Belarusian officials.
Timanovskaya was seen arriving at Narita airport on Wednesday morning with luggage and wearing blue jeans and a blue sweatshirt. She later boarded Austrian Airlines flight OS52.
The athlete had been expected to travel to Warsaw, Poland, where she was offered safe refuge and a humanitarian visa by the country's Prime Minister. It is not clear if she will make a connection in Vienna on her way to Poland, or if she intends to stay in Austria, or travel elsewhere.