Cheap flights from Montreal to the United States from C$ 203

The month of January is, on average, the cheapest month to fly to United States from Montreal, with most prices found around C$ 472. If you don’t want to visit United States in January, then you should wait until April to fly from Montreal, when ticket prices are also cheap, with an average price of C$ 492.

On average, the least expensive day to fly to United States from Montreal is on a Monday. momondo users have found tickets for Monday departures for as low as C$ 392. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to United States on Friday is C$ 500.

Our most recent data shows that the best time of day to fly to United States is in the morning. Flights from Montreal to United States during this time can be as low as C$ 432. Flights to United States are more costly in the afternoon, with an average ticket price of C$ 504. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Montreal Pierre Elliott Trudeau Intl to San Francisco for the best Montreal - United States flight prices

You are more likely to see cheaper flights to United States from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around C$ 455 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Montreal for as low as C$ 370 on momondo.

There are 4 cabin classes available to choose from on Montreal to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Air Canada, Porter Airlines, and Delta are the most popular carriers operating from Montreal to United States

Air Canada, Porter Airlines and WestJet are the top three most popular airlines that fly to United States 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 travelling to United States. Keep in mind that there are 7 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Montreal and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 133 minutes.

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

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

According to our data, United Airlines has had the least delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

As of September 2026, there are 84 flights per day flying from Montreal to United States. The most common time of day flights depart is 6:00p.m., with 43% of flights taking off in the afternoon.

588 flights are operational weekly from Montreal to United States as of September 2026. The most popular departure day for this route is Mon, with 19% of flights per week taking off on this day.