Cheap flights from Montreal to Boston from $140

In general, August is the cheapest month to fly from Montreal to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $299. If you aren’t able to travel during the month of August, then book flights to Boston from Montreal during May instead. Flights to Boston in May, while not as cheap as those in August, still average around $301.

The cheapest day to depart from Montreal to Boston is on a Thursday when prices can be found for as low as $358. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Monday is $432.

According to our data, the cheapest time of day to fly to Boston is in the evening. momondo users have found flights departing from Montreal to Boston in the evening for as low as $296. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Boston, so prices are often more expensive at around $478 per ticket.

Fly from Montreal Pierre Elliott Trudeau Intl to Boston Logan Intl for the best Montreal - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Montreal for as low as $281 on momondo.

There are 2 cabin classes available to choose from on Montreal to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 4% on your flight if you consider stops on a Montreal to Boston flight.

As of September 2026, prices for Montreal to Boston flights are approximately 13% cheaper when compared to flights at the same time last year.

Porter Airlines, Air Canada, and United Airlines are the most popular carriers operating from Montreal to Boston Logan Intl

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Boston from Montreal according to our data. Air Canada is the first choice among our users, with 76% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 3 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 25% of flights between Montreal and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Canada have had the least number of delays on this route over the last 12 months; with about 26% of their flights experiencing any sort of delay.

10 flights are operational daily from Montreal to Boston as of September 2026. The most popular departure time for this route is 1:00PM, with 42% of flights per day taking off in the afternoon.

As of September 2026, there are 72 flights per week flying from Montreal to Boston. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.