€157 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 28/5. 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

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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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Best Ontario Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Toronto
Hamilton1 stop€268
Ottawa
Ottawa1 stop€519
Thunder Bay
Thunder Bay2 stops€677

Good to know

Low season

January

High season

July

Cheapest flight

€157
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (2% 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.

See more FAQs

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 €1,045
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be July, August and September. The cheapest month to fly from Ireland is September.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.
See more tips

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 380 reviews
7.1Entertainment
8.5Crew
6.8Food
7.4Comfort
7.9Boarding
Airline reviews

Over the wing seat at emergency exit only downside people using lavatory have no respect and wait in the space

10.0 ExcellentSophia, Feb 2025YUL - FDF
Read more Air Transat reviews

Over the wing seat at emergency exit only downside people using lavatory have no respect and wait in the space

Flight delayed any hour and couple of big gate changes

The pilot came out and chatted with the passengers. He explained why there was a slight delay. The crew was excellent. Very helpful. I had to buy meals for my whole family and they were in different seats, so the crew had to deal with that. They were very pleasant and accommodating and did a great job!

We were unable to land in Liberia. It was not the airline’s fault, but we had to be diverted to SJO.

We had things stolen from our luggage, we also were refused an upgrade on a flight that was not full.

When we left, it wasn't Great . People were drinking heavily, very disrespectful Extremely loud, the entire trip. I think the crew members, should have get their attention. Coming back was great.

I sat in the club. The seeds were fantastic. The meal was great and Entertainment was good. The crew was fantastic. I recommend it to everybody.

The food was small portions and not fresh. I was seated at the back of the plane so by the time the cart approached me most of the food options were sold out. The cabin crew was fantastic however.

Great flight and crew. Food isn't free and neither are headphones...

We were in economy class but paid for option Plus which offer you an extra snack after take off, free earplugs & blanket. The crew were very attentive. The comfort however wasn’t great, hard to be comfortable in such restraint place. Wasn’t able to sleep through out the 7hrs flight and was exhausted upon arrival.

First flight out in the morning is often the best chance of running on time. Not in this case, which unfortunately is now what passengers can expect as what is common. - If you are late for a flight, too bad for you. - If West Jet is late, too bad for you. - Bags don't make it? Too bad for you. - Flight change by 1+ days, too bad for you Prices continue to increase, while customer service nosedives. This is backwards and in any other develop country would be considered unacceptable - except for Canada. Too bad for us.

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Horrible. I checked out myself that it seems that I can have a free carry-on. But they ask me to pay $75 when we are nearly boarding. It was tricky during check out that make you mistake that you can have a carry-on beside your personal item. Also they ask $75 in the airport instead of $35 during checkout. So the whole process is designed to make you this mistake

Westjet is one of the worst airlines in the world. 100% guaranteed to have flight delays and flight cancellations. Will never book again with Westjet.

Plane should have entertainment, instead of people paying to use wifi

Limited water service in a 6 hour flight offered at the very beginning and end of the flight.

Westjet has been absolutely terrible! Flights continually cancelled. Took 4 days to get home. Would have been 5, but we booked last flight with another airline after our Westjet flight was cancelled. Even pilot on original flight looked frustrated! Funny how they say cancelation is weather related, but they still have more than 1 other flight leaving to same destination on same day, but of course those are all full. This happened more than once on this trip. Two weather related cancelations and 1 mechanical. Not sure if the last flight even went ahead. Felt so sorry for families with kids and babies, and the older travellers. Felt like we lived out of suitcases and airports for days - SO RIDICULOUS! Next to no help from Westjet staff at airports, but it appears there is nothing they can help you with. Westjet has made it that they are unreachable when you need them! People were getting extremely frustrated, and rightfully so. Additional costs to us really added up, but Westjet literally DOESN'T CARE! Final straw was when we had to pay $1280 on a different airline (economy) trying to get home after another cancelled flight. Westjet will be refunding us a whole $140! Can't believe how this airline operates. We will never, ever use them again!

The cancelation of my flight from Toronto to Edmonton without any solution given to me for my next flight. Very poor connection from Toronto to Edmonton

Too squished in seats. I'm 110 lbs and 5'6....can't imagine being any bigger and flying

Original flight canceled and communicated poorly. A series of gate changes , delays and plane changes followed. Even after the entire flight boarded there was another plane changes followed. Food vouchers provided to my travel companion but not to me despite being on the same reservation. No in flight entertainment. The entire experience was terrible although the flight crew were great.

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

Very sad, couldn't stop crying. Was an hour delay in Ireland and when we got to Canada the flight was boarded and couldn't get on. Was the last flight of the day. Now in a hotel waiting on a stand by.I have to got o work, so I'll go first available while my son stays in the hotel til one's available

Was not aware that Aer Lingus was like the cut-rate services in the states, with no food or beverage (other then 3.50 Euro coffee) and no screens for entertainment. Was a great flight, but not much in the way of services.

during a very rough flight, I was forced to sit in a last row seat, fell asleep, and was forced to return to my assigned seat after the turbulence. The stewardess then used that seat to sleep.

I didn’t realize Aer Lingus was a “nickel and dime” kind of airline where you had to separately buy all the amenities you wanted. The push to purchase duty-free beauty products was off-putting. And our row had the least amount of leg room I’ve ever dealt with on a flight.

Flight was fine, 1st plane was a bit old entertainment, 2nd the display was freezing/ crashing every 30min. We had problems getting at gate and waited 2hr to get a gate in Toronto, then had a 90min mechanical delay at the next departure. Weather was bad and I’m just happy we didn’t get stuck.

Very nice Crew! Not much entertainment, but it was only a short flight, so it is okay for this flight.

I liked nothing about this flight nor the incredible lack of service and communication on this flight from the Captain to every staff member. Arrogant, entitled and lacking any kind of basic customer service

Everything should be better, terrible flight and airport service. Delayed for 6 hours, flying around for 1 hr, and keeping us on a plane for another 2,5 -3hrs.

I liked not paying for carry on and the compensation my husband and I received from the airline for overbooking our flight. The staff was very friendly and helpful.

My flight from Mexico City to Boston would have been fine, had I taken it, but because the final leg of the trip from Toronto to Boston was cancelled, I decided to fly on another carrier out of Mexico City that offered me a non, stop-direct route. Prior to this, I received several emails and text messages from Air Canada in regards to their Toronto to Boston flight being cancelled and about a similiar flights that departed much later that evening or the following day from Toronto to Boston. I would have hoped that Air Canada would have offered to seat on AeroMexico, but they did not. I flew on AeroMexico from Mexico City to Boston (direct) and enjoyed a wonderful flight. I replied to texts Air Canada's about my situation, but got no response. I have asked to be considered for a partial refund from Air Canada for the missed portion of my flight that I took with AeroMexico. I have yet to hear back.

Once we finally go under way it was excellent. But I hate that they changed the plane therefor the seat configuration.

The app and the information given at the counter did not match.

The app and the information given at the counter did not match

I booked my flight ni November and was placed on standby? How does this happen. Flight was 1 1/2 hours late departure plane was switched to a smaller plane easy to tell this is a government run company they don’t care about anyone

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Always having a good experience with Lufthansa. I prefer them over anyone else. Sometimes prices need to be more affordable. Munich airport is clean and good, services are available and it’s overall a good experience. I have been flying with Lufthansa for close to a decade and I hope many more to come.

My schedule flight was rebooking and changed to Chicago, then I did not used the flight from Dulles to Savannah

Service was courteous and attentive. Sat in the exit row. In exchange for leg room I had people tripping over my feet to use it at a hallway from one aisle to the other, had no access to films viaa viewscreen and no underseat storage for medicines or other personal travel needs. Next time I am seated there, I will refuse the exit row.

I barely made the flight. We had to take a bus to the plane and the plane smelled awfully of body odor. When the flight attendant walked by she smelled of body odor. It was incredibly uncomfortable. Also my luggage did not make it onto this flight and when it finally arrived home the handle of the luggage was all ripped. I will have to purchase a bag again.

The flight was ok, the flight attendants were lovely, the movies were good, the food was ok, and I am just sad because my luggage didn't arrive with me in Iasi because the flight from Vancouver to Frankfurt was delayed and then I barely made the rest of my flights. Also, there was no real support once I got off each of the flights. There was nobody to ask about gate or where to be and for example when I got off in Vienna to catch the flight to Iasi there was no screen where I could read the gate and time of departure of the plane. I was going crazy trying to find the plane to Iasi and I barely made it. When my luggage finally arrived home it was broken. The handle was completely broken and that was not so good. I am in a visit here, in Romania, and I will have to buy a new luggage.

The real bathroom smelled horrible and it smelled in the real of the plane..

It was a good flight overall, I just hate it when we get delayed because there is a small amount of layover time in Munich and you have to actually run to the next gate.

Staff are really not attentive. Seem rather disinterested in attending to the customers in general.

Definitely service quality is going down. With all those flights delays and several days luggage delays Lufthansa reputation of used to be a reliable air line is now compromised. The flight from JAX to Washington was almost 4 hours delayed: as a result I never checked-in at Warsaw Marriott Hotel and was not refunded. My Delsey hard shell luggage was destroyed (got a big crack on it!!!) upon several hours delayed arrival from Frankfurt. On my return trip my 2 luggages did not arrive with me to JAX and I only was able to get them 2 days later. The online agent with a heavy accent spoke broken English and was not able to provide me with information on missing luggages. Guys, you need to do better.

Book Cheap Ontario Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to Ontario found on KAYAK in the last 72 hours.
4/4Fri
1 stopPLAY
11h 10mDUB-YHM
9/4Wed
1 stopPLAY
10h 15mYHM-DUB
€268
6/4Sun
1 stopPLAY
11h 10mDUB-YHM
13/4Sun
1 stopPLAY
9h 35mYHM-DUB
€308
14/5Wed
directWestJet
7h 40mDUB-YYZ
19/5Mon
directWestJet
6h 50mYYZ-DUB
€417
10/3Mon
directAer Lingus
7h 45mDUB-YYZ
16/3Sun
directAer Lingus
6h 40mYYZ-DUB
€434
6/3Thu
directAer Lingus
7h 45mDUB-YYZ
28/5Wed
directAer Lingus
6h 30mYYZ-DUB
€438
22/4Tue
directWestJet
7h 45mDUB-YYZ
7/5Wed
directWestJet
6h 50mYYZ-DUB
€453
21/3Fri
2 stopsAir Canada
15h 05mDUB-YTZ
26/3Wed
2 stopsAir Canada
19h 40mYTZ-DUB
€489
4/6Wed
1 stopAir Transat
25h 51mDUB-YOW
13/8Wed
1 stopAir Transat
19h 25mYOW-DUB
€519
9/6Mon
1 stopAir Transat
11h 05mDUB-YUL
12/6Thu
1 stopAir Transat
12h 30mYUL-DUB
€522
6/4Sun
1 stopAir Canada
10h 29mDUB-YYZ
13/4Sun
directAir Canada
6h 35mYYZ-DUB
€523

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
28/5Wed
directWestJet
7h 40mDUB-YYZ
€157
16/5Fri
directWestJet
7h 40mDUB-YYZ
€165
15/8Fri
directAir Transat
7h 35mDUB-YYZ
€357
7/3Fri
directAer Lingus
7h 45mDUB-YYZ
€417
1/4Tue
directAer Lingus
7h 25mDUB-YYZ
€436
14/8Thu
directAir Transat
7h 35mDUB-YYZ
€459
17/6Tue
1 stopAir Canada
13h 30mDUB-YTZ
€547
17/3Mon
directLufthansa
7h 15mDUB-YYZ
€549
3/3Mon
directLufthansa
7h 15mDUB-YYZ
€551
15/4Tue
directAir Canada
7h 05mDUB-YYZ
€553

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Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
26/2Wed
multi-stopBritish Airways
15h 25mDUB-YUL
5/3Wed
multi-stopBritish Airways
15h 10mYUL-DUB
€495
24/2Mon
multi-stop
24h 55mDUB-YYZ
10/3Mon
multi-stop
10h 10mYYZ-DUB
€535
24/2Mon
multi-stopBritish Airways
11h 15mDUB-YYZ
10/3Mon
multi-stopBritish Airways
10h 55mYYZ-DUB
€544
26/2Wed
directAir Canada
7h 15mDUB-YYZ
5/3Wed
multi-stopAir Canada
9h 25mYYZ-DUB
€555
26/2Wed
multi-stopUnited Airlines
11h 32mDUB-YYZ
5/3Wed
multi-stopUnited Airlines
12h 35mYYZ-DUB
€566
26/2Wed
multi-stopUnited Airlines
14h 57mDUB-YYZ
5/3Wed
multi-stopUnited Airlines
12h 35mYYZ-DUB
€588
22/2Sat
directAir Canada
7h 15mDUB-YYZ
28/2Fri
directAir Canada
6h 35mYYZ-DUB
€611
24/2Mon
directAmerican Airlines
7h 45mDUB-YYZ
10/3Mon
multi-stopAmerican Airlines
12h 15mYYZ-DUB
€750
24/2Mon
directAmerican Airlines
7h 45mDUB-YYZ
27/2Thu
directAmerican Airlines
6h 40mYYZ-DUB
€802
22/2Sat
directAer Lingus
7h 45mDUB-YYZ
23/2Sun
directAer Lingus
6h 40mYYZ-DUB
€844

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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.

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