Wachtell, Lipton, Rosen & Katz is advising U.S. online travel-booking company Expedia Inc. on a $657.6 million proposed acquisition of Australian counterpart Wotif.com Holdings Ltd.

Brisbane-based Wotif operates several travel brands, including hotel and flight-booking website Wotif.com, lifestyle site lastminute.com.au and online travel planner GoDo.com.au. Nasdaq-listed Expedia is offering $3.09 a share for the company, which is a 30 percent premium to Wotif’s trading average on the Australian Securities Exchange for the five days up to and including July 4.