Cheap flights from Montreal to Ireland from C$ 368

The cheapest month to fly to Ireland from Montreal is in May. Flight prices, which tend to average around C$ 789, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Ireland from Montreal during September instead. Flights to Ireland in September, while not as cheap as those in May, still average around C$ 807.

The cheapest day to depart from Montreal to Ireland is on a Saturday when prices can be found for as low as C$ 907. The most expensive day to fly to Ireland is Wednesday, with ticket prices averaging around C$ 1,041.

Fly from Montreal Pierre Elliott Trudeau Intl to Dublin for the best Montreal - Ireland flight prices

You are more likely to see cheaper flights to Ireland from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around C$ 933 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Montreal for as low as C$ 757 on momondo.

There are 3 cabin classes available to choose from on Montreal to Ireland 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 16% on your flight if you consider stops on a Montreal to Ireland flight.

WestJet, United Airlines, and Aer Lingus are the most popular carriers operating from Montreal to Ireland

Air Canada, WestJet and Air Transat are the top three most popular airlines that fly to Ireland from Montreal according to our data. Air Canada is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 8 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between Montreal and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 135 minutes.

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

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 17% of their flights experiencing any sort of delay.

As of August 2026, 1 flights take off from Montreal and land in Ireland each day. The most common flight departure time for this route is 8:00p.m., with 100% of daily flights taking off in the evening.

The number of flights available between Montreal and Ireland is 12 per week as of August 2026. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.