Air Canada Flight 423 Deals & Information (2025/2026)

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Air Canada Flight 423 Route Deals From $136

The cheapest prices found with in the last 7 days for return flights were $246 and $136 for one-way flights to Pearson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 4 - Thu, Aug 7
YUL
Pierre Elliott Trudeau Intl.
YYZ
Pearson Intl.
$246 Roundtrip, found 5 days ago
$246
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Aug 4 from Pierre Elliott Trudeau Intl. to Pearson Intl., returning Thu, Aug 7, priced at $246 found 5 days ago
Mon, Aug 4 - Thu, Aug 7
YUL
Pierre Elliott Trudeau Intl.
YYZ
Pearson Intl.
$276 Roundtrip, found 5 days ago
$276
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Aug 4 from Pierre Elliott Trudeau Intl. to Pearson Intl., returning Thu, Aug 7, priced at $276 found 5 days ago
Fri, Sep 12 - Sun, Sep 14
YUL
Pierre Elliott Trudeau Intl.
YYZ
Pearson Intl.
$292 Roundtrip, found 18 hours ago
$292
Roundtrip
found 18 hours ago
Select Air Canada flight, departing Fri, Sep 12 from Pierre Elliott Trudeau Intl. to Pearson Intl., returning Sun, Sep 14, priced at $292 found 18 hours ago
Fri, Sep 12 - Sun, Sep 14
YUL
Pierre Elliott Trudeau Intl.
YYZ
Pearson Intl.
$297 Roundtrip, found 18 hours ago
$297
Roundtrip
found 18 hours ago
Select Air Canada flight, departing Fri, Sep 12 from Pierre Elliott Trudeau Intl. to Pearson Intl., returning Sun, Sep 14, priced at $297 found 18 hours ago

Frequently asked questions

What route does flight number AC423 take?
You'll be landing at Pearson Intl. Airport (YYZ) from YUL if you've booked a ticket on flight number AC423. You'll be in the air for 1 hour and 22 minutes during this journey. What's more, it conveniently operates non-stop.
What kind of plane is on flight number AC423?
Get set to cruise the skies aboard a Boeing 787-9 if you have a seat on flight AC423. Most flights from Montreal, QC Airport (YUL-Pierre Elliott Trudeau Intl.) to Toronto, ON Airport (YYZ-Pearson Intl.) use this model of aircraft.
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 AC423 flight with Travelocity, please visit our Customer Service Portal.