Air Canada Flight 421 Deals & Information (2025/2026)

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Frequently asked questions

What route does flight number AC421 take?
You'll be landing into Pearson Intl. Airport (YYZ) from Pierre Elliott Trudeau Intl. Airport (YUL) if you're traveling on flight number AC421. You'll be in the air for 1 hour and 22 minutes during this trip. It's also good to note that it conveniently travels direct.
What kind of plane is on flight number AC421?
The route for flight number AC421 is almost always Pierre Elliott Trudeau Intl. Airport (YUL) to Pearson Intl. Airport (YYZ), and the Boeing 737 MAX 8 is the type of aircraft you'll probably be flying 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 AC421 flight with Travelocity, please visit our Customer Service Portal.