Cheap flights from Montreal to San José from $251

In general, October is the cheapest month to fly from Montreal to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $424. If you don’t want to visit San José in October, then you should wait until May to fly from Montreal, when ticket prices are also cheap, with an average price of $434.

On average, the least expensive day to fly to San José from Montreal is on a Saturday. momondo users have found tickets for Saturday departures for as low as $452. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Montreal to San José on a Tuesday will generally be more expensive and average around $837. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Montreal to San José flights are usually those with departure times in the afternoon. Our users have found flights to San José in the afternoon for as low as $588. Flights in the evening are often more expensive with an average ticket price of $1,049.

Fly from Montreal Pierre Elliott Trudeau Intl to San José Juan Santamaria Intl for the best Montreal - San José Juan Santamaria Intl flight prices

You are more likely to see cheaper flights to San José from Montreal when booking week ahead of your departure date. In general, you can expect to find flights to San José for around $504 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from Montreal for as low as $453 on momondo.

There are 2 cabin classes available to choose from on Montreal to San José 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 24% on your flight if you consider stops on a Montreal to San José flight.

As of October 2026, prices for Montreal to San José flights are approximately 34% more expensive when compared to flights at the same time last year.

Porter Airlines, Copa Airlines, and Air Canada are the most popular carriers operating from Montreal to San José Juan Santamaria Intl

Air Transat, Air Canada and Avianca are the top three most popular airlines that fly to San José from Montreal according to our data. Air Transat is the first choice among our users, with 47% of people opting to fly with this airline when traveling to San José. Keep in mind that there are 5 different airlines that fly to San José on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Montreal and San José have experienced a delay on any given week. The average delay length over the past 12 months has been 121 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights in the early afternoon 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Transat have had the least number of delays on this route over the last 12 months; with about 22% of their flights experiencing any sort of delay.