Liza Minnelli performed to a sold-out Hollywood Bowl on Saturday, then made a mad dash to New York for composer Marvin Hamlisch’s wake on Sunday. The showbiz icon was in such a rush, she was forced to fly coach. “[Liza] changed her first-class flight home and could only find a coach ticket at the last minute,” a source said, adding the flight was delayed till 4 a.m. and Minnelli was “holed up at the airport.” Upon arrival, she rushed to the Frank E. Campbell Funeral Chapel just in time.