For passengers looking for affordable public transportation options to YUL, the 747 Express Bus is the best option. The one-way fare cost is C$ 10, and tickets are purchased on board the bus or at the ticket booth in the Arrival Hall. For passengers looking for the fastest form of public transportation to the airport, the STM Train is the best option. This service runs between the Central Station and the airport and takes approximately 25 minutes to complete. The one-way fare cost is C$ 8, and tickets are purchased at the ticket booth in the Arrival Hall.