If you're about to jump behind the wheel of your rental car but haven't done your research on Ottawa, ON Airport (YOW-Macdonald-Cartier Intl.), don't sweat it. Here are some basic facts to help you get started.Once you've picked up your belongings from the baggage claim area of Ottawa, ON Airport (YOW-Macdonald-Cartier Intl.), jump behind the wheel of your rental car and drive into Ottawa. The central area is located 7 miles north of the airport terminal.