🔥 Trending US Customs Operations Resume at Montreal Airport Amidst Flight Disruptions

US Customs Operations at Montreal-Trudeau Airport Temporarily Disrupted by Odour

On Wednesday, July 29, 2026, flights to the United States from Montréal-Pierre Elliott Trudeau International Airport (YUL) experienced significant disruptions after U.S. Customs and Border Protection (CBP) temporarily suspended its operations due to an odour ¹²⁵. This suspension led to the cancellation of approximately 20 flights bound for the U.S. and caused considerable delays for passengers ³⁴⁹.

Cause of the Disruption

The temporary shutdown of U.S. customs operations was attributed to an odour originating from construction activities within the airport ¹⁹. Specifically, reports indicate that a varnish odour from interior painting was detected in the U.S. preclearance area, prompting the suspension ²¹⁰. One passenger also reported an "exhaust smell" ⁵.

Impact on Travelers and Flights

The immediate consequence of the suspension was the cancellation of numerous U.S.-bound flights ³⁹. Passengers were advised to check their flight status before heading to the airport due to the evolving situation and expected delays ¹²¹⁰. While customs processing gradually resumed later in the day, travelers were still warned to anticipate ongoing delays ²³.

Resumption of Services

U.S. customs operations at Montreal-Trudeau International Airport gradually resumed on the same day, Wednesday, July 29, 2026, after the temporary suspension ³. Airport officials confirmed the resumption but noted that delays were still possible ².

Travelers planning to fly from Montreal to the U.S. are encouraged to continue monitoring their flight status with their respective airlines and the airport's official channels for the most up-to-date information ¹⁶⁸.