Cheap flights from Ontario to Ireland from $385
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Ireland departing on 7/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ontario to Ireland
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
United Airlines flights from Ontario to Ireland
Our best United Airlines deals on Ontario to Ireland flight tickets
Air Canada flights from Ontario to Ireland
Our best Air Canada deals on Ontario to Ireland flight tickets
See travel insights to Ireland from
How to get the cheapest flight ticket from Ontario to Ireland
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ireland?
In general, November is the cheapest month to fly from Ontario to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $507. If you aren’t able to travel to Ireland during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $573.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $726. This is often the case because there is less demand to fly during this day of the week. Flights from Ontario to Ireland on a Friday will generally be more expensive and average around $927. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
According to our data, the cheapest time of day to fly to Ireland is at noon. momondo users have found flights departing from Ontario to Ireland at noon for as low as $818. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the morning when prices are around $871.
Can stopping save me money on Ontario to Ireland flights?
You could potentially save up to 19% on your flight if you consider stops on a Ontario to Ireland flight.
What is the cheapest airline that flies from Ontario to Ireland?
JetBlue, United Airlines, and Air Canada are the most popular carriers operating from Ontario to Ireland
What airlines fly to Ireland?
Aer Lingus, American Airlines and Delta are the top three most popular airlines that fly to Ireland from Ontario according to our data. Aer Lingus is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 16 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
Cheap Ontario to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Ireland
When did momondo last update prices for flights from Ontario Airport to Ireland?
Prices for flights from Ontario Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Ireland?
As of June 2025, there are 5 operators available to choose from for flights from Ontario Airport to Ireland.
How old do you have to be to fly from Ontario Airport to Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The necessary travel and health documents for your Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Ontario to Ireland
Compare and see reviews for airlines that fly from Ontario to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $507 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $527 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $557 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $607 | Free Cancellation | Rating 7.8 1,358 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to Ireland?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ireland from Ontario.
Can I find flights from Ontario to Ireland with flexible booking policies on momondo?
momondo does allow users to show only those flights to Ireland from Ontario which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Ontario to Ireland?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Ireland.
I’m not ready to book a flight from Ontario to Ireland right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Ontario to Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.