SandraBullockSunny021810_01.jpgSandra Bullock arrived in Los Angeles last night around 11 pm PT at Los Angeles International Airport on an American Airlines flight from Austin, Texas, X17online can report exclusively.

The Oscar-winner had been holed up at her ranch home there for almost a week, after news broke that her husband, Jesse James, had cheated on her with tattoo artist Michelle "Bombshell" McGee.

As X17online reported, Bullock had been spending time with family and friends in Austin where she owns two homes.

Bullock sneaked out of the terminal adjacent to AA, was hidden by bodyguards, and jumped into an awaiting black Escalade. An X17 photographer on the scene tells us: "Sandra did NOT want to be seen, much less photographed. She was her usual smiley self. Normally she's great with us and let's us takes pictures but this was a different story. This was a woman who didn't want attention."

She did NOT return to the Huntington Beach home she shares with James, nor did she head to the West Hollywood home she purchased in 2001.