The train, which is meant to run between New York City and Montreal, reopened in April after being closed for three years due to the pandemic. According to a June 26 report from local news outlet WPTZ, the closure is due to Canadian regulations surrounding high temperatures.

As of early 2026, the Amtrak "Adirondack" service to Montreal has faced intermittent cancellations and service reductions primarily due to "anticipated track work" and the persistent issue of "sun-kinks." The track north of the border is owned by Canadian National (CN), and during the hot summer months, the rails can expand and deform (sun-kinks) if not properly maintained. Because CN has allowed parts of this section to degrade to "Class 2" status, Amtrak is forced to operate at very low speeds or cancel the cross-border portion entirely when temperatures rise. In 2026, major infrastructure projects, including the Portal North Bridge work and track re-laying north of Albany, have also caused temporary suspensions. While Amtrak and CN reached an agreement in late 2024 to address these maintenance issues, the work is temperature-sensitive and often takes place during the busy summer season, leading to disappointing "seasonal" cuts. Travelers are currently encouraged to use bus alternatives like Trailways or Flixbus, which are often faster than the 11-hour train journey even when it is running.