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ONT - DUB

$437 Find cheap flights from Ontario to Dublin

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 Dublin departing on 10/30. 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
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to Dublin

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Dublin, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Dublin, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Dublin (ONT-DUB)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Dublin 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 and deals for you by selecting your travel dates.
Choose your dates
10:34 am - 9:55 amONT-DUB
16h 21m2 stops
9:00 am - 9:52 pmDUB-ONT
20h 52m2 stops
$462United Airlines
Find Deal
Tue, Oct 29 - Thu, Nov 7
6:00 am - 9:55 amONT-DUB
19h 55m3 stops
11:50 am - 8:25 pmDUB-ONT
16h 35m2 stops
$488United Airlines
Find Deal
Tue, Nov 5 - Sat, Nov 16
10:50 am - 12:05 pmONT-DUB
17h 15m2 stops
12:40 pm - 11:26 pmDUB-ONT
18h 46m1 stop
$515British Airways
Find Deal
Tue, Oct 8 - Thu, Oct 17
8:41 am - 9:45 amONT-DUB
17h 04m1 stop
12:40 pm - 11:26 pmDUB-ONT
18h 46m1 stop
$522Iberia
Find Deal
Tue, Oct 8 - Thu, Oct 17
10:56 am - 7:35 pmONT-DUB
24h 39m2 stops
7:25 pm - 5:52 pmDUB-ONT
30h 27m2 stops
$533British Airways
Find Deal
Thu, Nov 7 - Mon, Nov 11
8:41 am - 9:45 amONT-DUB
17h 04m1 stop
12:40 pm - 9:42 pmDUB-ONT
17h 02m1 stop
$572Iberia
Find Deal
Tue, Oct 8 - Mon, Oct 14
7:00 am - 8:45 amONT-DUB
17h 45m1 stop
11:00 am - 10:28 pmDUB-ONT
19h 28m1 stop
$753Delta
Find Deal
Tue, Sep 24 - Tue, Oct 1
2:47 pm - 3:45 pmONT-DUB
16h 58m2 stops
7:15 am - 6:22 pmDUB-ONT
19h 07m2 stops
$831American Airlines
Find Deal
Wed, Jul 31 - Mon, Aug 5
6:05 am - 9:45 amONT-DUB
19h 40m1 stop
7:30 am - 6:22 pmDUB-ONT
18h 52m2 stops
$838American Airlines
Find Deal
Wed, Jul 31 - Mon, Aug 5
11:23 am - 8:45 amONT-DUB
13h 22m1 stop
10:00 am - 11:59 pmDUB-ONT
21h 59m2 stops
$900Delta
Find Deal
Sat, Jul 20 - Sun, Jul 28

Flights from Ontario to Dublin - Travel Insights & Trends

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Dublin, 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 Ontario to Dublin is February, where tickets cost $522 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,076 and $1,072 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Dublin, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Dublin, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 days before departure.

Which airlines provide the cheapest flights from Ontario to Dublin?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Ontario to Dublin found by KAYAK users in the last 72 hours was for $462 on United Airlines, followed by British Airways ($515). One-way flight deals have also been found from as low as $437 on United Airlines and from $443 on KLM.

Good to know

Low season

March

High season

June

Cheapest flight

$437
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

When to book flights from Ontario to Dublin

Are your dates flexible? Find out the best times to travel from Ontario to Dublin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Dublin

  • What is the cheapest flight from Ontario to Dublin?

    In the last 3 days, the lowest price for a flight from Ontario to Dublin was $437 for a one-way ticket and $462 for a round-trip.

  • Do I need a passport to fly between Ontario and Dublin?

    Yes

  • Which aircraft models fly most regularly from Ontario to Dublin?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Dublin?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Dublin, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Dublin, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Ontario to Dublin are Delta and KLM. With an average price for the route of $859 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $637 and an overall rating of 7.8.

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

    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 Dublin.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Dublin 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 Dublin?

    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 Dublin with an airline and back to Ontario with another airline. Booking your flights between Ontario and DUB can sometimes prove cheaper using this method.

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

    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 Dublin 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 5 airlines serving from Ontario to Dublin

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Dublin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. 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 Ontario to Dublin? 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 10457 reviews
8.2Boarding
7.9Comfort
8.6Crew
7.4Food
8.0Entertainment
Airline reviews

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!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

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.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

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.

The flight was delayed for 2 hrs. Because they didn’t have a crew to fly. And it is not a first time for klm to do that. Last time they cancelled my filght and rebooked me 3 days later. Not reliable airline

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.

no issues at all... Kudos to the food. This time was really really good

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 food quality is poor. The staff are very friendly and accommodating. The entertainment program was limited. I experienced a delay of 30 minutes due to two issues. Passenger luggage had to be removed and there was a technical issue with the stairs not detaching from the aircraft. The pilot managed to compensate and we arrived only 15 minutes later. The luggage at Dubai airport was very slow. I waited over an hour.

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.

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.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

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.

It was not Iberia. It was with United. It was great!!!

My son and I are 193 cm tall. We had reserved and paid for seats with extra leg room towards the front of the cabin. The day of the flight, we learned that Iberia had changed aircraft. We were assigned regular seats way back in the cabin. When we landed from our first leg we spoke with agents at the gate and we were told that they couldn’t improve our seats because the flight was full.

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

I could change to business before flight and everything was perfect except for entertainment which was none.

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.

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.

Thankful for 2-4-2 economy seating. Food was ok. Free beer & wine in economy was nice. Served hot dinner, mud- flight snack and pre-arrival ham sandwich. Seat with pillow & blanket. Reasonable movie options. Overall, a good experience. IBERIA APP is terrible terrible terrible.... needs to get upgraded to equivalent of TAP Airlines App. No option to bid or request an upgrade. Very disappointing.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

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.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Leg space was not enough. The meal was not satisfactory.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

Book cheap flights from Ontario to Dublin

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Dublin found on KAYAK in the last 72 hours.
10/30Wed
2 stopsUnited Airlines
18h 00mONT-DUB
$437
8/26Mon
1 stopKLM
13h 22mONT-DUB
$443
7/4Thu
1 stopDelta
17h 40mONT-DUB
$458
10/14Mon
1 stopAmerican Airlines
22h 00mONT-DUB
$467
10/15Tue
1 stopAmerican Airlines
22h 00mONT-DUB
$471
9/17Tue
1 stopIberia
13h 00mONT-DUB
$521
7/30Tue
1 stopIberia
13h 02mONT-DUB
$526
7/3Wed
2 stopsBritish Airways
18h 56mONT-DUB
$633
7/3Wed
1 stopDelta
17h 40mONT-DUB
$688
6/12Wed
2 stopsBritish Airways
20h 16mONT-DUB
$924

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Last minute flights from Ontario to Dublin

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 from Ontario to Dublin that are departing in the next 10 days.
6/3Mon
multi-stopIberia
12h 55mONT-DUB
6/17Mon
multi-stopIberia
14h 17mDUB-ONT
$1,224
6/2Sun
multi-stopIberia
39h 25mONT-DUB
6/4Tue
multi-stopIberia
31h 47mDUB-ONT
$1,933
6/2Sun
multi-stopAmerican Airlines
22h 31mONT-DUB
6/4Tue
multi-stopAmerican Airlines
15h 14mDUB-ONT
$2,354
6/1Sat
multi-stopIberia
17h 41mONT-DUB
6/8Sat
multi-stopIberia
20h 37mDUB-ONT
$2,829
6/3Mon
multi-stopIberia
34h 55mONT-DUB
7/7Sun
multi-stopIberia
19h 10mDUB-ONT
$2,894
6/2Sun
multi-stopIberia
12h 55mONT-DUB
6/8Sat
multi-stopIberia
17h 29mDUB-ONT
$5,916
6/2Sun
multi-stopIberia
18h 14mONT-DUB
6/18Tue
multi-stopIberia
19h 19mDUB-ONT
$6,662
6/1Sat
multi-stopIberia
15h 11mONT-DUB
6/8Sat
multi-stopIberia
14h 17mDUB-ONT
$7,512

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Ontario - Dublin Flights

Departure:

Ontario (ONT)United States

Destination:

Dublin (DUB)Ireland

Return flight deals:

Dublin - Ontario

Cabin classes:

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