Booking a rental car for your trip to Ottawa is simple with Expedia. Around 0.97 kilometers from Byward Market Square, Enterprise is one of multiple car rental companies located in the area. Also look up the rates at Alamo and Thrifty Car Rental. Even if you need a vehicle today, you can enter your pick-up and drop-off locations to view unbeatable deals from a wide variety of suppliers. Select the one that matches your needs, or click on the “Great Deal” box for more exclusive prices.