Cheap flights from Montreal to Costa Rica from C$ 193

The cheapest month to fly to Costa Rica from Montreal is in September. Flight prices, which tend to average around C$ 520, are often lower during this time because this is during the off-season. If you don’t want to visit Costa Rica in September, then you should wait until October to fly from Montreal, when ticket prices are also cheap, with an average price of C$ 600.

Our data shows that Monday is the least expensive day to fly to Costa Rica. Tickets to fly out on this day can be as low as C$ 685. 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 Costa Rica on Friday is C$ 843.

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

You are more likely to see cheaper flights to Costa Rica from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around C$ 721 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Montreal for as low as C$ 616 on momondo.

There are 3 cabin classes available to choose from on Montreal to Costa Rica 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 15% on your flight if you consider stops on a Montreal to Costa Rica flight.

WestJet, Air Canada, and Air Transat are the most popular carriers operating from Montreal to Costa Rica

Air Transat, Air Canada and Avianca are the top three most popular airlines that fly to Costa Rica from Montreal according to our data. Air Transat is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Costa Rica. Keep in mind that there are 10 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

Historically, on average around 20% of flights between Montreal and Costa Rica have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

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

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

According to our data, Air Transat has had the least delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

The number of flights available between Montreal and Costa Rica is 1 per day as of February 2026. The most frequent departure time is 6:00p.m., with 63% of daily flights leaving in the evening.

As of February 2026, 11 flights take off from Montreal and land in Costa Rica each week. The most common flight departure day for this route is Wed, with 27% of weekly flights taking off on this day.