We recommend arriving at the airport at least 3 hours before your scheduled flight departure time.
If you need to check in or drop off checked baggage at your airline's counter, allow enough time to complete these steps before your flight.
Kindly note that YUL Montréal-Trudeau International Airport is open 24 hours a day, 7 days a week. However, each airline sets its own hours of operation which are based by its flight schedule, therefore please contact your airline directly to determine how early you may check-in for a flight.