€170 Find Cheap Flights to Ontario – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ireland to Ontario departing on 25/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Best Ontario Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto1 stop€331
Ottawa
Ottawa1 stop€476
Thunder Bay
Thunder Bay1 stop€535
Toronto
Toronto1 stop€331
Ottawa
Ottawa1 stop€476
Thunder Bay
Thunder Bay1 stop€535

Book Cheap Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ontario

Thu, 27 Aug - Sun, 13 Sep
Multiple Airlines Logo
09:40 - 21:45DUB  Dublin-YYZ Toronto Pearson Intl
17h 05m1 stop Halifax Intl
Multiple Airlines Logo
21:55 - 22:45YYZ  Toronto Pearson Intl-DUB Dublin
19h 50m1 stop Glasgow Intl
€331Multiple Airlines
Mon, 31 Aug - Sun, 13 Sep
Multiple Airlines Logo
09:40 - 15:00DUB  Dublin-YYZ Toronto Pearson Intl
10h 20m1 stop Halifax Intl
Multiple Airlines Logo
21:55 - 22:45YYZ  Toronto Pearson Intl-DUB Dublin
19h 50m1 stop Glasgow Intl
€336Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Icelandair Logo
14:15 - 19:10DUB  Dublin-YYZ Toronto Pearson Intl
9h 55m1 stop Reykjavik Keflavik Intl
Icelandair Logo
23:10 - 13:15YYZ  Toronto Pearson Intl-DUB Dublin
9h 05m1 stop Reykjavik Keflavik Intl
€346Icelandair
Thu, 27 Aug - Tue, 15 Sep
WestJet Logo
09:40 - 21:45DUB  Dublin-YYZ Toronto Pearson Intl
17h 05m1 stop Halifax Intl
WestJet Logo
21:35 - 09:20YYZ  Toronto Pearson Intl-DUB Dublin
6h 45mdirect
€347WestJet
Tue, 1 Dec - Thu, 10 Dec
Icelandair Logo
11:30 - 18:15DUB  Dublin-YYZ Toronto Pearson Intl
11h 45m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:40 - 10:15YYZ  Toronto Pearson Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
€371Icelandair
Mon, 5 Oct - Sun, 11 Oct
WestJet Logo
09:40 - 15:00DUB  Dublin-YYZ Toronto Pearson Intl
10h 20m1 stop Halifax Intl
WestJet Logo
18:15 - 08:20YYZ  Toronto Pearson Intl-DUB Dublin
9h 05m1 stop Halifax Intl
€414WestJet
Tue, 22 Sep - Tue, 6 Oct
Air Transat Logo
13:15 - 15:50DUB  Dublin-YYZ Toronto Pearson Intl
7h 35mdirect
Air Transat Logo
23:55 - 11:30YYZ  Toronto Pearson Intl-DUB Dublin
6h 35mdirect
€419Air Transat
Fri, 9 Oct - Tue, 20 Oct
Lufthansa Logo
06:05 - 16:20DUB  Dublin-YYZ Toronto Pearson Intl
15h 15m1 stop Frankfurt am Main
Lufthansa Logo
20:50 - 08:15YYZ  Toronto Pearson Intl-DUB Dublin
6h 25mdirect
€419Lufthansa
Mon, 5 Oct - Mon, 12 Oct
Lufthansa Logo
06:05 - 19:30DUB  Dublin-YYZ Toronto Pearson Intl
18h 25m1 stop Frankfurt am Main
Lufthansa Logo
20:50 - 08:15YYZ  Toronto Pearson Intl-DUB Dublin
6h 25mdirect
€419Lufthansa
Fri, 9 Oct - Tue, 20 Oct
Air Transat Logo
13:15 - 15:50DUB  Dublin-YYZ Toronto Pearson Intl
7h 35mdirect
Air Transat Logo
23:55 - 11:30YYZ  Toronto Pearson Intl-DUB Dublin
6h 35mdirect
€429Air Transat
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Ontario?

These are the best return prices found by users searching on KAYAK in the last 5 days.

The cheapest ticket to Ontario from Ireland found in the last 5 days was to Toronto Pearson Intl Airport, at €333 return. The most popular route is Dublin (DUB) to Toronto Pearson Intl Airport (YYZ) and the cheapest return ticket found on this route in the last 5 days was €333.

What is the cheapest month to fly from Ireland to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ireland to Ontario is April, when tickets cost €225 (return) on average. On the other hand, the most expensive months are October and December, when the average cost of round-trip tickets is €571 and €541 respectively.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from Ireland to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally in the afternoon, when retur flights cost €574 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is €641.

How far in advance should I book a flight from Ireland to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Ireland to Ontario, you should book around 7 weeks before departure, which saves you about 35% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Which is the cheapest airport to fly into in Ontario?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ontario is Toronto Pearson Intl Airport (YYZ), with an average flight price of €398.

Good to know

Low season

February

Cheapest flight

€170
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from Dublin to Toronto Pearson Airport

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Ireland to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ireland to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ireland to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ireland to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ireland to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ireland to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Tuesday when return tickets can be as cheap as €571. On the other hand, the most expensive day to fly is Monday, when return prices are €658 on average.

Top tips for finding cheap flights to Ontario

  • Looking for cheap airfare to Ontario? 25% of our users found return tickets to Ontario for the following prices or less: From Dublin €888
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top 5 airlines flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ireland to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
Air TransatOverall score based on 572 reviews
7.1Entertainment
8.0Boarding
8.5Crew
6.8Food
7.3Comfort
Airline reviews

My screen was broken so now movies, etc, but I didn’t really mind. They did work on it, so good effort on their part.

10.0 ExcellentWilliam, Jun 2026
Read more Air Transat reviews

My screen was broken so now movies, etc, but I didn’t really mind. They did work on it, so good effort on their part.

i was not able to take my flight because the information i needed to book my dog correctly was not provided

They never sent me a confirmation to say my flight time had changed so I cut my holiday short by 6 hours Had to pay over 50 American for my luggage to be checked on the way home and that’s more that it cost on the way there. Arbitrarily charging more for the same thing when the passenger has no options is shady The cabin was an icebox going there and back, if all the passengers have their gloves on and their hoods up that should be an obvious sign to turn up the heat

The Turkish was good . I had a problem with air Transat terrible experience for me

Very good. A lot better experience then I expected for an economy flight.

Porter airlines was good. I didn't have the best experience when booking through airfare assist however, as I got no final confirmation from them that the flight was booked until I called them. Even then, the confirmation code they gave me was incorrect and couldn't be used for check in. On a positive note airfare assist was actually picked up the phone relatively quickly when calling

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

This has been the worst experience I’ve ever had. Basically, I lost my round-trip tickets because one of my last names was missing, and you didn’t allow me to correct it. I had to purchase a full ticket again. Once I get home, I will start legal proceedings against you.

The crew were polite and courteous. The Pilot did an excellent landing. It was very smooth and gentle. My only regret is that I was charged twice for my luggage . The attendant gave me no receipt . I didn't realize until I was about to board. How can this be resolved? Thank you.

Very comfortable flight. Great service, food options, and entertainment options. With Wi-Fi!

On time departure and arrival at LAX - good inflight entertainment - all basic seats on every airline right now begin to feel small after 10 hours!!

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

The embarkation at Dublin was a kin to a Ryanair approach, in other words a circuitous and cheep access

Most narrow seat of my life. Easyjet has larger seats. And as I just wrote in the last comment section - Seat 1A promises luxury after a great businessflight. Instead, it's narrow, the seatbelt is 20cm shorter than the one in 1B, it's just a joke.

Flight crew was very cold and stood around a lot talking to each other.

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

It’s my new favourite airline! Everything was smooth and relaxed!

Because of problem with aer Lingus, I couldn’t check in until just before the flight and was stuck in the middle seat

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

Westjet never disappoint always terrible small plane ,crowded cheap snack if you can call it snack

Westjet was late and we missed our connecting flight with Cathay. Had to wait 8 hours. Westjet only allows 1 checked in baggage for international flights- it’s always been 2. Canada allows only 1 sandwhich bag size full off small liquids. Everything else will be tossed. Awful trip. Will never fly west jet or go to Toronto to connect flights!

I didn’t have any food but my Prosecco hit the spot. We left on time and the crew was friendly.

I thought the coffee was excellent! The wait for the luggage was acceptable.. It left and arrived on time. My son found that his device worked very well and he really enjoyed his flight! The stewardess moved him up to the emergency exit and he very much appreciated that!

I wasn’t able to book or pay for a seat and they forgot to check me in for my third flight so I spent 24 hours in Toronto waiting for another one.

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

The flight was cancelled less than 24 hours before departure. The alternate flight was a day later going from Grenada to Toronto to Vancouver to Calgary to Montreal. 2 days in the air. Not serious, Very bad service

I like the wider seats, Plus lots of legroom, Lacking entertainment, no tv or screen to play with

Liked in-flight wifi Did not like - nothing to complain, really. All good

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Delay caused us to miss connecting flight and 3 hour layover. All connecting flights my wife and I couldn’t sit together. Once arrived luggage arrived 4 days later

Terrible 12 hours delay Terrible We lost our suitcases No medication with us nothing

Enjoyed the A330 comfort, and the inseat entertainment. Horrible disembarking experience. No gate when we landed to sat on tarmac for 40 minutes, and missed my train.

Awful, I was bumped from my buisness class seat because the airline decided to forfeit my seat to a pilot and stick me in the very back of the plane. My flight was delayed by an hour, boarding took an extra 30 minutes longer then it should have, and the in flight entertainment system was broken for my entire flight. I have yet to hear from Air Canada with regards to a refund for my ticket so in total I'm down about $1400 dollars for my tickets. Moving forward if I can avoid using Air Canada in the future I will be doing so even if it costs me extra money.

Unfortunately, my experience with Air Canada was not as great as I had hoped. The flight attendants were not very friendly or welcoming, which made the overall experience less pleasant. I expected better customer service and a more positive attitude from the crew. I hope Air Canada takes this feedback into consideration and works to improve the passenger experience.

Everything was excellent. Just keep doing what you are. I would travel with this airlines gain.

Flight was good. Really appreciate the second hot food offering. C

The chairs were too upright, but not awful. Boarding was fast and efficient and we did not sit too long in the plane before takeoff.

I didn’t realize booking through Kayak the pricing was in American fees and that I had to pay for my baggage when I arrived at the airport. I thought it was included in the price. For this reason I spent an extra $500. Next time I will book directly through the airline.

Everything was very excellent The food was great The crew was so nice 🥰👌🏽 I really appreciate and loved travelling with Air Canada 🇨🇦

The longer flight on our leg back to the US was fine. Boarding was great, we had to stay on the runway for a bit after boarding… they kept it cool uncomfortable.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Missed flight. Requested assistance for my father and he did not receive it in Paris.

Poor food on flight between Toronto and Stockholm Airport Toronto too crowded

Business Class Configuration was excellent- private and comfortable. Crew and service were excellent. I really appreciate Air Canada cabin pressurization equal to an altitude of 8,000ft. Upon landing, I felt more alert and refreshed than typical for international flights

Hard to use tables and TV screens interfere with the enjoyment of flight experience. Other than that it was a smooth and comfortable ride and we were well taken care of.

The flight crew, the on-plane service, and the food were fine. The seats lacked cushioning and were uncomfortable compared to other planes from recent flights. The plane was initially delayed one hour and that expanded to 1.5 hours. When we boarded, there was insufficient room for our carry-on bags, which added more time to disembarking from the plane. It appeared the Air Canada staff or the Toronto Airport staff were less than competent to handle whatever the issue was that caused the delays, which was never communicated.

Boarding was haphazard after people with small children or walking difficulties

The boarding process is not well organized at all. It need to be totally revised with an emphasis on order.

We were helped whenever needed and had a pleasant flight.

Everything you need to know for your flight to Ontario

Cabin class types available on flights to Ontario

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.