Air Canada Flight 404 Deals & Information (2025/2026)

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Air Canada Flight 404 Route Deals From $123

The cheapest prices found with in the last 7 days for return flights were $244 and $123 for one-way flights to Pierre Elliott Trudeau Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number AC404 take?
AC404 flies straight from YYZ to YUL. During this trip, you'll be in the air for around 1 hour and 14 minutes. Book ahead to get your preferred seat.
What terminal does AC404 fly out of?
Direct flights between Toronton Pearson and Pierre Elliott Trudeau Intl. Airport (YUL) are served by flight number AC404, and passengers booked on this route normally depart from Terminal 1.
What kind of plane is on flight number AC404?
The route for flight number AC404 is nearly always Pearson Intl. Airport (YYZ) to YUL, and the Airbus A220-300 is the type of plane you'll probably be jetting off with.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AC404 flight with Travelocity, please visit our Customer Service Portal.