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Find cheap flights from Ontario to Ireland from $398

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Ireland departing on 9/14. 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
0 bags
Fri 7/5
Fri 7/12

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Best Ireland Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Dublin
Dublin2 stops$440
Shannon
Shannon2 stops$696

Good to know

Low season

March

High season

June

Cheapest flight

$398
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 36% increase in price.
Flight from Ontario to Dublin

FAQs - booking Ireland flights

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

    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 Ontario to Ireland.

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

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

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

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

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

    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 to Ireland from 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 Ireland

  • Morning departure is around 20% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to Ireland

Need help choosing which airline to fly with from Ontario to Ireland? 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.
8.0
DeltaOverall score based on 10377 reviews
7.9Comfort
7.4Food
8.6Crew
8.2Boarding
8.0Entertainment
Airline reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Quick and efficient as always. Air France managed to loose and damage my luggage that never made it onto my KLM flight.

The food from Lagos to Amsterdam was was very poor compared to AMS-YYZ

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Booked connecting flights with KlM. My serving flight was the furthest part of the airport. On arrival in Zurich. My two cases arrived but only one carry on belong to my son. His three suitcase didn't arrive. After enquiring we discovered they were still in Amsterdam. We landed at 11.12. We eventually left the airport just after one.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

The seats are too cramped in that plane. If you’re above 1,80m consider alternatives or first class I guess… There were no emergency exits to seat somewhere with more legroom

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

Flight home was great. But, as should have been expected, Newark Liberty airport sucked.

We left our child’s tablet on our seat 12 B on the plane and we can’t get a hold of anyone to try to get help locating the tablet.

My flight was cancelled after a 7 hour delay. I am awaiting a refund.

Ability to select seating would be nice. We were family of three and they had us seated back to back and one of us on the other side of the plane??? That is pretty goofy. Especially when tickets were placed two months in advance.

I am quite satisfied. The flight was on time and landed early. Staff was friendly.

Needed more info on connecting flight. Late flight made very short connection. Lost luggage that we still do not have!

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Good food, prompt and timely flight, good on-board personnel

I paid for premium economy but BA oversold the seats and we ended up being downgraded. Not acceptable given how much we paid for the flight. We were also separated to 2 different areas so not only did we not get the service we paid for, we didn’t even get to sit together. I’m not happy at this treatment by BA because of corporate greed.

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Sitting in the plane for an extended period of time was very hot and uncomfortable. Very late arrival happened to not affect me but many others probably missed their connection because it also took a long time to get to the terminal.

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Ontario to Ireland

Recent round-trip flight deals

11/12Tue
2 stopsUnited Airlines
17h 00mONT-DUB
11/21Thu
2 stopsUnited Airlines
16h 35mDUB-ONT
$440
11/12Tue
2 stopsUnited Airlines
17h 00mONT-DUB
11/21Thu
2 stopsUnited Airlines
18h 02mDUB-ONT
$462
11/19Tue
2 stopsBritish Airways
15h 59mONT-DUB
11/26Tue
2 stopsBritish Airways
32h 07mDUB-ONT
$470
11/7Thu
2 stopsBritish Airways
22h 07mONT-DUB
11/11Mon
2 stopsBritish Airways
30h 23mDUB-ONT
$533
9/24Tue
1 stopIberia
12h 58mONT-DUB
10/4Fri
1 stopIberia
17h 32mDUB-ONT
$631
9/17Tue
1 stopDelta
26h 45mONT-DUB
9/29Sun
2 stopsDelta
21h 46mDUB-ONT
$661
10/10Thu
1 stopDelta
13h 15mONT-DUB
10/30Wed
1 stopDelta
15h 50mDUB-ONT
$679
10/10Thu
1 stopIberia
17h 04mONT-DUB
10/17Thu
1 stopIberia
18h 46mDUB-ONT
$692
7/2Tue
2 stopsAmerican Airlines
17h 01mONT-DUB
7/9Tue
1 stopAmerican Airlines
19h 15mDUB-ONT
$905
7/2Tue
1 stopAmerican Airlines
12h 56mONT-DUB
7/11Thu
1 stopAmerican Airlines
14h 10mDUB-ONT
$932

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Recent one-way flight deals

9/14Sat
2 stops
36h 50mONT-DUB
$398
7/4Thu
1 stopDelta
13h 15mONT-DUB
$443
7/2Tue
1 stopIberia
12h 56mONT-DUB
$521
8/16Fri
1 stopKLM
13h 22mONT-DUB
$528
7/1Mon
1 stopIberia
35h 01mONT-DUB
$542
11/23Sat
1 stopKLM
13h 55mONT-DUB
$610
8/28Wed
2 stopsAmerican Airlines
18h 24mONT-ORK
$746
6/11Tue
2 stopsBritish Airways
18h 31mONT-DUB
$746
8/3Sat
2 stopsBritish Airways
21h 47mONT-DUB
$797
6/18Tue
1 stopAmerican Airlines
22h 15mONT-DUB
$2,818

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Last minute flights from Ontario to Ireland

Last minute flight, train and bus deals

6/7Fri
multi-stopKLM
13h 15mONT-DUB
6/14Fri
multi-stopKLM
16h 42mDUB-ONT
$962
6/7Fri
multi-stopKLM
13h 15mONT-DUB
6/14Fri
multi-stopKLM
16h 42mDUB-ONT
$1,010
6/7Fri
multi-stopKLM
13h 15mONT-DUB
6/15Sat
multi-stopKLM
16h 42mDUB-ONT
$1,012
6/9Sun
multi-stopBritish Airways
20h 16mONT-DUB
6/15Sat
multi-stopBritish Airways
14h 17mDUB-ONT
$1,502
6/7Fri
multi-stop
17h 05mONT-DUB
6/17Mon
multi-stop
19h 44mDUB-ONT
$1,544
6/7Fri
multi-stop
17h 05mONT-DUB
6/12Wed
multi-stop
19h 43mDUB-ONT
$1,562
6/9Sun
multi-stopIberia
12h 56mONT-DUB
6/23Sun
multi-stopIberia
25h 39mDUB-ONT
$1,584
6/8Sat
multi-stopBritish Airways
23h 46mONT-DUB
6/15Sat
multi-stopBritish Airways
14h 17mDUB-ONT
$1,688
6/8Sat
multi-stopIberia
35h 01mONT-DUB
7/31Wed
multi-stopIberia
20h 30mDUB-ONT
$1,728
6/5Wed
multi-stopAmerican Airlines
14h 51mONT-DUB
6/8Sat
multi-stopAmerican Airlines
14h 17mDUB-ONT
$2,852

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Ontario - Ireland Flights

Departure:

Ontario (ONT)United States

Return flight deals:

Ireland - Ontario

Cabin classes: