Air Canada’s new low-cost carrier will begin flying to European and Caribbean vacation spots next year under the name “Rouge”, the airline said on Tuesday of the service it hopes will provide a springboard for sustained profitability. … Rouge will offer cheap flights to tourists visiting the Caribbean and Europe, starting July 1, 2013—not June, as was previously announced. … The fight for share of the vacation market has become more important for Air Canada as main rival WestJet prepares to launch Encore, its Canadian regional airline. Encore promises to undercut Air Canada fares on domestic short-haul flights. …