U.S. customs suspend preclearance at Montreal-Trudeau airport after odour from nearby construction
U.S. customs temporarily halted preclearance operations at Montreal-Trudeau airport after odours from a nearby construction site; ADM urges travellers to confirm flight status promptly.
The U.S. customs presence at Montreal-Trudeau airport was suspended temporarily on Wednesday after strong odours originating from a construction site nearby prompted officials to halt processing. Aéroports de Montréal (ADM) confirmed the pause and advised passengers to check the status of their flights before coming to the terminal. Details remain limited as agencies work to assess the source and any safety implications for staff and travellers.
U.S. customs suspend preclearance at Montreal-Trudeau airport
U.S. customs officers stopped preclearance activities in the international terminal, affecting the usual in-Canada processing for flights bound for the United States. The decision was described as temporary and precautionary while the odour was investigated. Preclearance is central to operations at Montreal-Trudeau, and any suspension has immediate operational consequences for passengers heading to U.S. destinations.
Aéroports de Montréal advises passengers to verify flight status
ADM issued a public advisory urging travellers to check with their airline or the airport’s flight information before travelling to the airport. The authority emphasized that passengers should avoid arriving early to the terminal until the situation is clarified to reduce crowding and unnecessary wait times. ADM said it would update its channels as more information becomes available.
Odour linked to nearby construction site
Airport officials indicated the odour appears to be emanating from a construction project near the airport perimeter rather than from inside terminal facilities. Contractors and site managers are cooperating with authorities to identify the substance and determine whether any hazardous materials are involved. Investigators are sampling air quality and will share results with public health and safety agencies as they become available.
Immediate effects on U.S.-bound processing and delays
The suspension of U.S. customs activities directly impacts processing for U.S.-bound passengers, who normally complete immigration and customs checks before boarding. Airlines may need to delay boarding, reassign gates, or adjust flight schedules while the preclearance zone remains out of service. Transportation officials warned that ripple effects could affect connecting flights and ground transportation times for affected travellers.
Airlines and ground staff adjust operations
Airlines serving Montreal-Trudeau have been notified and are coordinating with airport authorities on alternate arrangements for outbound screening and passenger handling. Ground crews and customer service staff have been mobilized to provide instructions, rebookings, and accommodations where required. Passengers with urgent travel needs were advised to contact their carrier directly to confirm options and potential disruptions.
Public safety measures and environmental checks
Local public safety units and environmental officers were called in to conduct air-quality assessments and ensure the odour did not pose a health risk. Authorities are prioritizing staff and passenger safety and have protocols for temporary closures or restricted access if contaminant levels exceed safety thresholds. Officials said any findings that indicate a health hazard would trigger broader notifications and remedial measures.
Authorities promise updates as investigation continues
Both Aéroports de Montréal and the U.S. customs authorities indicated they would provide additional updates once the investigation yields conclusive information. At present, communications stress that the pause in operations is a precaution and that restoring normal services is a priority. The airport asked media and travellers to rely on official channels for accurate, timely information to avoid the spread of unverified reports.
The situation at Montreal-Trudeau airport remains fluid, and travellers are advised to monitor airline communications and ADM advisories closely before travelling to the airport.
