Cheap flights from Ontario to Ireland from C$ 300

The cheapest month to fly to Ireland from Region of Ontario is in October. Flight prices, which tend to average around C$ 633, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Ireland from Region of Ontario during January instead. Flights to Ireland in January, while not as cheap as those in October, still average around C$ 648.

The cheapest day to depart from Region of Ontario to Ireland is on a Sunday when prices can be found for as low as C$ 766. The most expensive day to fly to Ireland is Tuesday, with ticket prices averaging around C$ 841.

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$ 695. 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$ 1,063.

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$ 726 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$ 645 on momondo.

There are 3 cabin classes available to choose from on 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

WestJet, Aer Lingus and Air Canada are the top three most popular airlines that fly to Ireland from Region of Ontario according to our data. WestJet is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 12 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

As of April 2026, there are 7 flights per day flying from Region of Ontario to Ireland. The most common time of day flights depart is 5:00p.m., with 53% of flights taking off in the afternoon.

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