U.S. Customs operations at Montreal-Trudeau International Airport were suspended on July 29, 2026, due to a strong odour, leading to the cancellation of multiple U.S.-bound flights.
The disruption affected passenger processing for flights to the United States, causing cancellations and delays. The odour originated from construction materials near the customs area.
Passengers experienced interruptions as customs services were temporarily halted. Efforts to resume operations promptly were underway following the incident.
