The Réseau express métropolitain (REM) is the automated light-rail line running across the Montreal region. One question comes up often among newcomers: can you already take it to the airport? As of today, the answer is no — but the network is growing fast.
The airport station isn't in service yet. According to REM, the branch serving Montreal-Trudeau airport is scheduled to enter service in 2027, once integration and testing phases are complete. The trip between downtown and the airport will then take about twenty minutes. Until then, no train reaches YUL.
What's already running. Several segments are open: the South Shore (Brossard) since 2023, the Deux-Montagnes branch since November 2025, and the West Island branch (Anse-à-l'Orme), inaugurated on May 18, 2026 with four new stations. The airport branch is the last major segment to be completed.
Getting to the airport today. The public-transit option is the STM's 747 shuttle, which links downtown to YUL 24 hours a day, 7 days a week. According to the STM, the fare is $11.25 and works as a pass valid for 24 hours on the bus, metro, exo trains, and the REM (Zone A). Check the current schedule and departure point before you go, as some downtown stops are being relocated in 2026 due to construction.
Good to know for newcomers. If you're picking up family at the airport or heading off on a trip, plan around the 747 for now — and keep an eye on the REM station opening, which will make round trips to YUL much simpler once it's in service.