Most Montrealers who use public transit will pay more for their commute starting in the new year. As of Jan. 1, the price of a standard STM monthly pass will rise from $77 to $79.50. A weekly pass will go up from $23.75 to $24.50.A ticket to get on the 747 bus from downtown Montreal to the airport will go up a dollar — from $9 to $10.For students and seniors, the price of a monthly pass will go from $45 to $47.50. The price of a single fare remains unchanged at $3. STM fares: 2013 vs. 2014. standard monthly pass will cost $79.50, instead of the current $77. CBC News Posted: Dec 18, 2013 6:38 PM ET Last Updated: Dec 18, 2013 11:09 PM ET. The STM says it must hike fares to overcome a $16M shortfall in its budget. (CBC).