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.

Thu, Oct 23 - Sat, Oct 25
YYZ
Pearson Intl.
YUL
Pierre Elliott Trudeau Intl.
$244 Roundtrip, found 3 days ago
$244
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Oct 23 from Pearson Intl. to Pierre Elliott Trudeau Intl., returning Sat, Oct 25, priced at $244 found 3 days ago
Thu, Jul 24 - Sat, Jul 26
YYZ
Pearson Intl.
YUL
Pierre Elliott Trudeau Intl.
$260 Roundtrip, found 5 days ago
$260
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Jul 24 from Pearson Intl. to Pierre Elliott Trudeau Intl., returning Sat, Jul 26, priced at $260 found 5 days ago
Sat, Jul 26 - Sun, Jul 27
YYZ
Pearson Intl.
YUL
Pierre Elliott Trudeau Intl.
$264 Roundtrip, found 1 day ago
$264
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Jul 26 from Pearson Intl. to Pierre Elliott Trudeau Intl., returning Sun, Jul 27, priced at $264 found 1 day ago

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.