€164 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 24/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
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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
Torontodirect€346
Ottawa
Ottawa2 stops€547
Thunder Bay
Thunder Bay1 stop€531
Toronto
Torontodirect€346
Ottawa
Ottawa2 stops€547
Thunder Bay
Thunder Bay1 stop€531

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, 20 Aug - Mon, 24 Aug
WestJet Logo
10:40 - 13:20
DUB
-
YYZ
7h 40mdirect
WestJet Logo
22:55 - 10:45
YYZ
-
DUB
6h 50mdirect
€346WestJet
Thu, 2 Jul - Wed, 15 Jul
WestJet Logo
09:40 - 17:15
DUB
-
YYZ
12h 35m
1 stop
WestJet Logo
07:35 - 08:20
YYZ
-
DUB
19h 45m
1 stop
€352WestJet
Sat, 27 Jun - Mon, 6 Jul
Multiple Airlines Logo
11:20 - 14:00
DUB
-
YYZ
7h 40mdirect
Multiple Airlines Logo
22:10 - 00:15
YYZ
-
DUB
21h 05m
1 stop
€356Multiple Airlines
Sat, 27 Jun - Sun, 5 Jul
Multiple Airlines Logo
12:15 - 14:55
DUB
-
YYZ
7h 40mdirect
Multiple Airlines Logo
22:10 - 23:15
YYZ
-
DUB
20h 05m
1 stop
€358Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Air Canada Logo
09:50 - 14:21
DUB
-
YTZ
9h 31m
1 stop
Air Canada Logo
17:30 - 07:45
YTZ
-
DUB
9h 15m
1 stop
€443Air Canada
Mon, 14 Sep - Mon, 21 Sep
Air Canada Logo
09:20 - 15:50
DUB
-
YTZ
11h 30m
1 stop
Air Canada Logo
17:30 - 07:45
YTZ
-
DUB
9h 15m
1 stop
€444Air Canada
Thu, 3 Sep - Sun, 6 Sep
United Airlines Logo
09:30 - 17:56
SNN
-
YYZ
13h 26m
1 stop
United Airlines Logo
16:00 - 10:15
YYZ
-
SNN
13h 15m
2 stops
€498United Airlines
Thu, 3 Sep - Sun, 6 Sep
United Airlines Logo
12:30 - 22:23
SNN
-
YYZ
14h 53m
1 stop
United Airlines Logo
16:00 - 10:15
YYZ
-
SNN
13h 15m
2 stops
€499United Airlines
Thu, 3 Sep - Sat, 12 Sep
Air Transat Logo
13:15 - 21:20
DUB
-
YOW
13h 05m
1 stop
Air Transat Logo
20:55 - 11:30
YOW
-
DUB
9h 35m
1 stop
€553Air Transat
Tue, 7 Jul - Fri, 10 Jul
Air Transat Logo
13:15 - 20:05
DUB
-
YOW
11h 50m
1 stop
Air Transat Logo
20:55 - 11:30
YOW
-
DUB
9h 35m
1 stop
€559Air 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 72 hours.

The cheapest ticket to Ontario from Ireland found in the last 72 hours was to Toronto Pearson Intl Airport, at €354 return. The most popular route is Dublin (DUB) to Toronto Pearson Intl Airport (YYZ) and the cheapest return airline ticket found on this route in the last 72 hours was €354.

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 March, when tickets cost €92 (return) on average. On the other hand, the most expensive months are September and August, when the average cost of round-trip tickets is €1,318 and €573 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 €560 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 €642.

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 41% 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 €417.

Good to know

Low seasonJanuary
Cheapest flight€164
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly (11% 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 €574. On the other hand, the most expensive day to fly is Monday, when return prices are €661 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 €724
  • 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 555 reviews
7.1Entertainment
7.9Boarding
7.3Comfort
8.5Crew
6.8Food
Airline reviews

Arm rests are too small and too close. No screens, movie selection was very limited and poor. Food is pretty much overpriced cheap convenience store food.

6.0 GoodAnonymous, May 2026
POP - YUL
Read more Air Transat reviews

Arm rests are too small and too close. No screens, movie selection was very limited and poor. Food is pretty much overpriced cheap convenience store food.

Crew was good, helpful. Flight ran on time.would have liked to take airtransat home to MTL. But the price back from San Jose Costa Rica was MUCH more expensive than the flight from MTL to San Jose c.r.

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

We are a senior couple (70+) and chose emergency exit seats so we would have 2 seats together and neither of us had to sit in a middle seat. My husband is type 1 diabetic on an insulin pump and I monitor his blood sugar levels. I am 5'9" and 250 lbs and found the seats extremely uncomfortable. Toward the end of the flight I developed diarrhea which lasted a full 24 hours.

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

I was very nice to arrive earlier than scheduled. Very much appreciated. No issues with flight. All was good.

The on-board crew were professional and friendly and made the trip feel like we were taken care of well. The gate for the flight departure changed three times...not great but not terrible. Considering it was the day of the New Jalisco Cartel mayhem, we can't really complain.

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

Onward flight was okay. return from Lisbon was poor as we missed our flight due to a long line at the passport control. Air Transat made no effort to accommodate us even though we were at the passport control 40 minutes prior to the departure.

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

From Rome to Dublin if you want any refreshments you have to pay for them, Not used to this as we typically get soft drinks and a little snack on a 3hour flight in the US.

Boarding was fine, difficult to understand the guy over the speaker though so we were unsure when exactly to board until they updated the monitor by the gate. Flight itself was fine, nice flight attendants, seats were comfortable enough, good selection of entertainment on the screens. Other airlines at a similar price point have included wifi though, at a minimum messaging, for free, so that was a little disappointing to not have that. But otherwise fine. Food was pretty decent, nice hot meal, good drink selection, nice snacks. Bathrooms were ok, could've been cleaned a little more often, but they were never bad.

Vegetarian food option was very poor. Effectively, overcooked rice ("risotto"). Zero protein which is always disappointing with no vegetables and poorly seasoned. Basically had lots of carbs on 6-hour flight. Not acceptable for business class in 2026. Flight was otherwise very good.

Small plane. Tight seating . What can one say except that it was fast!

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

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

On time, only a little turbulence, very competent and caring attendants. Clear information.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

On a four hour delayed flight now on seats back end of the plane instead front-

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

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.

Crew attitude and attentiveness. Comfort of the seats. Entertainment options.

this flight was exceptional due to the plane itself being updated with longer seat belts so no need for the extender and access to a tv.

Flight was delayed for over an hour making our connecting flight impossible to make. No notification that we had been bumped to another flight. Was told my bag would stay at the airport. Got to my hotel and got notified I needed to pick it up. Come all the way back to the airport to find I didn’t need to pick it up and the app glitched. They did at least put me on the next available flight. No offer for money back or compensation for time lost due to being home a day later. No compensation for food as it was only good for anything in the airport. Not outside it. They did at least book the hotel and the gate agent was very helpful. But I did not appreciate them giving my seats away to stand by people while I was sprinting through the airport to try and make it to a flight I was late for through no fault of my own. If they did not let stand by on I would have been on my flight as they did allow two people before me on

Flight was overbooked and seats assigned to multiple passengers. Delay 1 hour to sort out.

Good but I don’t received my bags yet is been 5days still no update

Comfortable seats with good leg room. But not screens on seat backs.

I was rescheduled when I missed my flight due to border clearance issue

Air Canada has very professional , friendly and co operative crew.

I liked the fact that we arrived on time. What I did not like, I paid for a seat. Unfortunately a very large women sat beside me (required a belt extension). Her body spilled to my side. Not her fault but I had to lean to the left because her body was literally on my side of the seat. This caused a back ache. I was unable to sit straight the entire flight. There should be some form allowance (wider seat) for morbidly obese passengers. These seats are not designed for extremely obese people. I feel compassionate towards these obese passengers but I got off the plane with a substantial lower back ache. I myself have a degenerative disk disease and this did not help me

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

The already delayed flight took an hour to find no-show passenger bags, which seemed long. Flight attendants only provided flight transfer information to a few passengers not all.

Original Lufthansa flights were canceled and the alternative route that was offered required cab transfer in New York from JFK to Newark at my own expense. Who can refund these $218?

The flight was delayed 7 hours and we were given 10 euros vouchers. This is ridiculous. The crew was not nice at all, they just did their job with serving food and drinks. Did not even apologize for the delay!!!!

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

it was great the cabin crew were polite and detail oriented.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

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.

Business Class was very comfortable and the food and service was top notch.

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.