The American has not raced since taking a break from skiing in December following a stomach illness that left her physically drained and some poor performances.
Her batteries now recharged, Vonn returned to training in Europe last week and is now ready to take part in the downhill and super-G at the Austrian event.
“It feels great to be back and I can’t wait to start racing again,” she said.
Vonn won the two opening downhills of the season at Lake Louise and tops the standings in that discipline.
She also leads the super-G rankings heading to St Anton am Arlberg, which will host a World Cup event for the first time since December 2007, when Vonn swept up on route to the first overall World Cup and downhill titles of her career.