Bus Terminals/Stations: You can also buy tickets in person at bus terminals or stations in Montreal. Visit the main bus terminals, such as the Montreal Bus Central Station (Gare d'autocars de Montréal), and inquire at the ticket counters of the bus companies operating the Montreal to Ottawa route. They will assist you with ticket availability and purchasing.
Bus company offices or ticket counters: You can also purchase bus tickets directly from the bus company's office or ticket counters. Visit the nearest bus terminal or station of the bus company you want to travel with, and inquire about ticket availability and prices. You can pay in person and receive a physical ticket.
Mobile apps: Some bus companies have their dedicated mobile apps, allowing you to search for routes, check availability, and purchase tickets directly from your smartphone. Look for the official mobile app of the bus company you are interested in traveling with and follow the instructions to buy tickets.
Third-party travel agencies: Some travel agencies or ticket resellers may sell bus tickets for various bus companies. You can check with local travel agencies or search online travel platforms that offer bus ticket booking services. Keep in mind that they may charge a service fee.