€172 Find Cheap Flights to Ontario

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 11/8. 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

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
Toronto1 stop€348
Ottawa
Ottawa1 stop€462
Thunder Bay
Thunder Bay1 stop€534
Toronto
Toronto1 stop€348
Ottawa
Ottawa1 stop€462
Thunder Bay
Thunder Bay1 stop€534

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

Wed, 12 Aug - Wed, 19 Aug
WestJet Logo
09:40 - 21:45
DUB
-
YYZ
17h 05m
1 stop
WestJet Logo
16:15 - 08:20
YYZ
-
DUB
11h 05m
1 stop
€348WestJet
Tue, 7 Jul - Wed, 15 Jul
WestJet Logo
10:10 - 17:10
DUB
-
YYZ
12h 00m
1 stop
WestJet Logo
11:00 - 08:20
YYZ
-
DUB
16h 20m
1 stop
€350WestJet
Fri, 26 Jun - Sat, 4 Jul
Multiple Airlines Logo
10:40 - 13:20
DUB
-
YYZ
7h 40mdirect
Multiple Airlines Logo
22:15 - 01:00
YYZ
-
DUB
21h 45m
1 stop
€350Multiple Airlines
Tue, 25 Aug - Thu, 10 Sep
Multiple Airlines Logo
10:40 - 13:20
DUB
-
YYZ
7h 40mdirect
Multiple Airlines Logo
22:15 - 23:00
YYZ
-
DUB
19h 45m
1 stop
€351Multiple Airlines
Sat, 22 Aug - Sat, 5 Sep
WestJet Logo
09:40 - 21:45
DUB
-
YYZ
17h 05m
1 stop
WestJet Logo
23:05 - 10:55
YYZ
-
DUB
6h 50mdirect
€352WestJet
Thu, 6 Aug - Wed, 12 Aug
WestJet Logo
09:40 - 10:00
DUB
-
YYZ
29h 20m
1 stop
WestJet Logo
21:35 - 09:20
YYZ
-
DUB
6h 45mdirect
€353WestJet
Thu, 25 Jun - Sun, 12 Jul
WestJet Logo
10:40 - 13:20
DUB
-
YYZ
7h 40mdirect
WestJet Logo
07:35 - 08:20
YYZ
-
DUB
19h 45m
1 stop
€354WestJet
Tue, 25 Aug - Wed, 2 Sep
Air Canada Logo
09:50 - 14:21
DUB
-
YTZ
9h 31m
1 stop
Air Canada Logo
16:30 - 07:45
YTZ
-
DUB
10h 15m
1 stop
€438Air Canada
Tue, 16 Jun - Mon, 22 Jun
Air Canada Logo
09:50 - 14:22
DUB
-
YTZ
9h 32m
1 stop
Air Canada Logo
18:30 - 07:45
YTZ
-
DUB
8h 15m
1 stop
€439Air Canada
Sat, 29 Aug - Sun, 6 Sep
United Airlines Logo
12:30 - 10:06
SNN
-
YTZ
26h 36m
2 stops
United Airlines Logo
12:15 - 10:15
YTZ
-
SNN
17h 00m
2 stops
€492United Airlines
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 €435 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 €435.

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 November, when tickets cost €399 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is €595 and €584 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 €557 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 €648.

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 31% 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 €399.

Good to know

Low seasonJanuary
Cheapest flight€172
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly (74% 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 Thursday when return tickets can be as cheap as €572. On the other hand, the most expensive day to fly is Monday, when return prices are €660 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 €413
  • 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 554 reviews
7.9Boarding
7.1Entertainment
7.3Comfort
6.8Food
8.5Crew
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.

I didn't have any problems during my flight. My main issue is with airlines in general, they keep offering less and less every year, AirTransat is no different.

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

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.

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.

Economy seats a bit small but other than that it was all good.

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.

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.

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

I liked that the staff members at the airport were helpful and very pleasant to work with. Flight crew were also a great crew who were helpful and I was happy for their help boarding. Overall a pleasant trip home.

Business class seats were quite old. Flight departure was delayed . Food service was good

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Fantastic dinner! The chicken with the coconut rice was amazingly good! Excellent service!

Air traffic delay meant boarding started, then plane was evacuated and passengers sent back to the terminal for 1 hour. Very little information shared.

Our AC flight was canceled not once but twice on the same day to Quebec City at Toronto Pearson Airport. 2;30 AC and 9;40PM AC flight. After having our 2:35 flight canceled, we were bumped the second time because of large student groups visiting Quebec City. We were sent to Montreal on an 11:30 flight which landed close to 12:45AM. We were given a hotel room at the Marriot Hotel next to the airport. We had less than 4 hours sleep before we being taken to the airport for our 7AM flight to Quebec City. We didn't have much time to use our vouchers given for breakfast once we had cleared customs for the 2nd time since leaving Toronto Pearson Airport. We missed a full evening in Quebec City and lost our hotel room for the night. We were exhausted the next day and missed an excursion we had planned. My wife and I are both seniors in our seventies, and we weren't happy to be treated in this manner. Air Canada could have used a larger plane to accommodate us and the other ten or so people that were bumped from their flight to Quebec City in order to accommodate student groups. We will endeavor never to fly Air Canada again in future and we will not recommend flying with this airline to our friends and families.

Better to not serve food if those are the options

It was a good experience flying Air Canada for the first time

They did not let us board because one member needed a transit visa, which was not evident at the time of ticket purchase.

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.