The Canada Border Services Agency will open the Chief Mountain port of entry on May 15, 2026 [1].
This seasonal reopening provides essential access for travelers moving between Canada and the U.S. during the summer months. Because the crossing is located in a high-altitude region, it remains closed during winter to ensure safety and operational viability.
Chief Mountain is recognized as the highest-elevation border crossing in Canada [2]. It serves as a critical link for those traveling between Alberta and Montana. The port of entry is scheduled to remain operational through Sept. 30, 2026 [3].
Travelers using this route typically access remote wilderness areas and national parks. The agency manages the crossing to facilitate tourism and local transit, while maintaining border security. The transition to summer hours allows the CBSA to manage the influx of seasonal visitors who frequent the mountainous terrain.
Official schedules confirm the crossing will be available for the duration of the summer window [1], [3]. Travelers are encouraged to verify current operating hours before attempting the crossing, as weather conditions in the high-elevation region can affect accessibility.
“The Canada Border Services Agency will open the Chief Mountain port of entry on May 15, 2026”
The seasonal nature of the Chief Mountain crossing highlights the geographic challenges of maintaining border infrastructure in high-altitude environments. By limiting operations to a specific window from May to September, the CBSA optimizes resources for peak tourism periods while avoiding the logistical hazards of winter mountain travel.
