Cheap flights from Ontario to Ireland from C$ 259

The cheapest month to fly to Ireland from Region of Ontario is in January. Flight prices, which tend to average around C$ 647, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Ireland from Region of Ontario during February instead. Flights to Ireland in February, while not as cheap as those in January, still average around C$ 665.

The cheapest day to depart from Region of Ontario to Ireland is on a Friday when prices can be found for as low as C$ 819. The most expensive day to fly to Ireland is Tuesday, with ticket prices averaging around C$ 928.

In the evening is the cheapest time of day to fly from Region of Ontario to Ireland when you can find flight prices for as low as C$ 726. Flying to Ireland in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around C$ 1,143.

Fly from Toronto Pearson Intl to Dublin for the best Ontario - Ireland flight prices

You are more likely to see cheaper flights to Ireland from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around C$ 736 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Region of Ontario for as low as C$ 664 on momondo.

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

WestJet, Air Transat, and Porter Airlines are the most popular carriers operating from Ontario to Ireland

Aer Lingus, WestJet and Air Canada are the top three most popular airlines that fly to Ireland from Region of Ontario according to our data. Aer Lingus is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 10 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 12 flights per day flying from Region of Ontario to Ireland. The most common time of day flights depart is 5:00p.m., with 61% of flights taking off in the evening.

85 flights are operational weekly from Region of Ontario to Ireland as of August 2026. The most popular departure day for this route is Fri, with 16% of flights per week taking off on this day.