To download the MBTA mTicket App for iOS and Android Visit: www.mbta.com/mticket. Buy a ticket anywhere, anytime - in seconds. The Official MBTA mTicket App ... Under the plan, commuter rail prices will vary by region, but the maximum increase for a one-way fare is 75 cents. Monthly commuter rail pass increase from $5.50 to $27.75, depending on the region.