A guide for international-to-domestic transfers.

Connecting flights through Montreal require understanding the airport layout and transfer process, especially international-to-domestic connections.
International to International: Shortest process, often same terminal. International to Domestic: Requires baggage claim and re-check. Domestic to Domestic: Simplest connections. Domestic to International: Requires customs pre-clearance.
If your luggage is checked through to your final destination, it's automatically transferred. You'll see this noted on your ticket. If not through-checked, you must claim and re-check bags.
Montreal has clear signage for connections. Arrive at second flight check-in area. Allow time for queues and potential delays. Information desks help confused passengers.
Domestic to domestic: 1.5 hours minimum. Domestic to international: 2 hours recommended. International to international: 1.5 hours minimum. International to domestic: 2.5-3 hours recommended.
International arrivals require customs processing. This adds 30-60 minutes to connection time. Have documents ready and available. Have next flight information available for officials.
Move quickly through baggage claim. Look for connections/transfer signage. Ask airport staff if confused. Check departure board immediately upon arriving. Keep emergency airline contact info handy.