$159 Cheap Air Canada flights Boston (BOS) to Montreal (YUL)

Apply the "Price (lowest to highest)" filter on Expedia to find cheap Air Canada return flights from $313 from BOS to YUL. Affordable one-way options from $159 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Scoring the best Air Canada deals from BOS to YUL often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. What's more, you can pocket 17% on average by buying your fare on a Sunday compared to a Friday, which is usually the most expensive day to book.* It's a good idea to start checking out flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Jetting off from BOS at 7:10AM UTC-5, the earliest Air Canada flight to YUL lands at 8:35AM UTC-5. Traveling early means you'll be less likely to encounter cancellations or delays.* Not a morning person? The last Air Canada flight from BOS to YUL departs at 3:40PM UTC-5 and touches down at 5:05PM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Traveling from BOS to YUL with Air Canada means enjoying a host of benefits, including top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That's in addition to the Air Canada Aeroplan points you can earn with Air Canada.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.