$158 Cheap Air Canada flights Montreal (YUL) to Boston (BOS)

Set the "Price (lowest to highest)" filter on Expedia to find cheap Air Canada round-trip flights from $263 from YUL to BOS. Affordable one-way tickets from $158 are also on offer.**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.

Check for Air Canada flights from YUL to BOS about one month before you want to go. The most affordable time to book an international flight is usually 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your fare class or itinerary, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Passengers booking on a Sunday can save 17% on average compared to those who book on a Friday.**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.

The earliest Air Canada flight from YUL to BOS departs at 8:40AM UTC-5, arriving at 10:08AM UTC-5. If you want to jet off later in the day, the last Air Canada flight leaves YUL at 6:35PM UTC-5 and lands at BOS at 8:03PM UTC-5. Flying early is often a smart choice as morning and mid-morning flights are 20% less likely to be canceled.**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.

Air Canada makes flying from YUL to BOS more comfortable with top-tier customer service and a 4-star airline rating. You may even earn points with Air Canada Aeroplan. Don't forget to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.