Major highways cross the Agglomération de Longueuil, linking it with the rest of Canada, the north-eastern United States (New York and Boston), as well as Ontario (Ottawa and Toronto):
- East-west highways: 10, 20, 30
- North-south highways: 15, 25
- Provincial highways: 112, 116, 132, 134
The Agglomération is also linked to Montréal and other municipalities on the Island of Montréal by four bridges:
- Jacques-Cartier Bridge
- Champlain Bridge
- Victoria Bridge
- Louis-Hippolyte-Lafontaine Bridge/Tunnel
The Agglomération de Longueuil is located on the shores of the St. Lawrence River, one of the world’s major navigable seaways.
Located 15 km from the Agglomération, the Port of Montréal provides the most direct link between Europe and the east coast of North America, as well as the American Midwest.
The railway network in the Agglomération de Longueuil is operated by two companies, Canadian National and Canadian Pacific.
The Saint-Hilaire suburban train line run by the Metropolitan Transportation Agency (Agence métropolitaine de transport – AMT) links the South Shore with Montréal, making three stops in the Agglomération, at Saint-Lambert, Saint-Hubert and Saint-Bruno-de-Montarville.
Located in the Agglomération de Longueuil, Saint-Hubert Airport has three runways, including one of 2,390 m (7,840 ft.) and a control tower.
Here are some of the services it offers:
- Aircraft charters
- Regular flights
- Food services
- Maintenance, fuelling, parking of aircraft
- Pilot training
Public transportation infrastructure
The Agglomération de Longueuil is served by a vast network of public transportation, ensuring access to all industrial parks.
Apart from a number of park-and-ride lots, this transportation network includes 70 bus lines, intermodal terminals and a Metro station linking it to Montréal.