A new bus line numbered 815 is set to begin service in mid‑June 2026, linking the Des Sources REM station with Montreal‑Trudeau Airport. The route will run through the summer months and continue into the fall, giving West Island residents a direct public‑transit connection to the airport.
The route was announced by local officials who said the aim was to improve access between the western suburbs and the airport. By stopping at the Des Sources REM station, the 815 line will integrate with the existing rapid‑transit network, allowing passengers to transfer from the REM to the airport bus without needing a private vehicle.
The introduction of the 815 service adds an additional option for commuters who travel to the airport from the West Island. Prior to the new route, travelers relied on a combination of regional buses, taxis, or personal cars to reach the terminal. The new line is intended to streamline the journey, especially for those who work at or frequently fly from Trudeau.
Officials indicated that the service will operate on a regular schedule throughout the summer season and will remain in place as the region transitions into the fall. The exact frequency and operating hours have not been detailed in the announcement, but the route is expected to complement existing transit offerings.
West Island residents are encouraged to plan their trips using the new 815 line once it becomes active. The addition of the bus service reflects ongoing efforts to expand public‑transit connectivity across Montreal’s western districts and to support the airport’s role as a major transportation hub.
The 815 bus route represents a coordinated step to link the Des Sources REM station directly with Montreal‑Trudeau Airport, providing a dedicated transit corridor for passengers traveling between the West Island and the airport.