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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 11/10. 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 7/12
Fri 7/19

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 43,795,805 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
6:00 am - 7:00 amONT-DUB
18h 00m2 stops
11:50 am - 9:52 pmDUB-ONT
18h 02m2 stops
$462United Airlines
Find Deal
Mon, Oct 28 - Wed, Nov 6
6:02 am - 7:00 amONT-DUB
16h 58m2 stops
9:00 am - 9:52 pmDUB-ONT
20h 52m2 stops
$507United Airlines
Find Deal
Wed, Nov 20 - Sun, Nov 24
7:00 am - 9:25 amONT-DUB
18h 25m1 stop
5:20 pm - 7:22 pmDUB-ONT
34h 02m2 stops
$523KLM
Find Deal
Thu, Nov 7 - Mon, Nov 11
3:01 pm - 10:15 amONT-DUB
35h 14m2 stops
10:55 am - 12:07 amDUB-ONT
21h 12m2 stops
$533Iberia
Find Deal
Thu, Nov 7 - Thu, Nov 14
10:50 am - 9:45 amONT-DUB
14h 55m1 stop
12:40 pm - 9:42 pmDUB-ONT
17h 02m1 stop
$617Iberia
Find Deal
Thu, Oct 17 - Mon, Oct 21
11:23 am - 8:45 amONT-DUB
13h 22m1 stop
12:20 pm - 10:28 pmDUB-ONT
18h 08m1 stop
$634Delta
Find Deal
Sun, Sep 8 - Mon, Nov 25
8:10 am - 9:45 amONT-DUB
17h 35m1 stop
9:20 am - 8:02 pmDUB-ONT
18h 42m2 stops
$740British Airways
Find Deal
Mon, Sep 2 - Mon, Sep 9
12:43 pm - 9:45 amONT-DUB
13h 02m1 stop
12:40 pm - 6:48 pmDUB-ONT
14h 08m1 stop
$820American Airlines
Find Deal
Sun, Aug 4 - Tue, Aug 20
2:47 pm - 4:35 pmONT-DUB
17h 48m2 stops
12:40 pm - 6:48 pmDUB-ONT
14h 08m1 stop
$955British Airways
Find Deal
Tue, Jul 23 - Tue, Aug 13
2:44 pm - 9:45 amONT-DUB
35h 01m1 stop
12:40 pm - 9:40 pmDUB-ONT
17h 00m2 stops
$994American Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10

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 $1,077 and $1,070 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 KLM ($523). One-way flight deals have also been found from as low as $437 on KLM and from $448 on Delta.

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?

    SkyTeam, Star Alliance, 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 $863 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 10000 reviews
8.6Crew
8.2Boarding
7.9Comfort
8.0Entertainment
7.4Food
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.

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.

One of the vstewardeses wanted to bump me of the plane for absolutely nothing. There is CCTV in the plane ans everything can be verified. Very disappointing , you all will see, o other 5 years and the passangers who does not smile to flight attendent will be bumped off...

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 flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

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.

Iberia canceled then rescheduled the first leg of this flight three weeks before my trip left on May 11. I had to cancel and get a refund. And scramble to find a different flight through a travel agency flying on United. And Kayak , you’ve been writing me ever since as if I’m still on this original flight! Pretty scary you have no way of knowing what has befallen your customers! I will never buy plane tix from you again!

The flight from Amsterdam to Dallas was great, ok food, good service, great entertainment. But Dallas to SF was very tiring because of two hour delay inside the airplane waiting for AA paper work in 99 degrees in the sun. We had no oxygen and the pilot had to ask everyone to blast the AC because it was getting too hot inside the cabin.

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.

They offered several meals and snacks, the crew was very friendly and kind. There was a broad selection of movies, shows, and games. I was impressed!

Our flight was delayed by 2-hrs but I understand it was beyond the scope of the crew members

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

Booked with Iberia but flight was with Level. This switch of airlines was not published anyware and I was not made aware. Service was horrible, attendants were rude and nowhere to be found. Interior of plane was disgusting and dirty, trash on the floor, bathrooms were dirty (probably because flight attendants were not collecting trash from passengers). I have never encountered this on any other flight or airline. A public bus or metro in Los Angeles is 10 times cleaner. Had I known this was not an Iberia flight I would not have booked this tickets.

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

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

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.

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.
11/10Sun
1 stopKLM
13h 55mONT-DUB
$437
8/6Tue
1 stopKLM
13h 22mONT-DUB
$443
11/30Sat
1 stopDelta
27h 25mONT-DUB
$448
11/25Mon
1 stopDelta
27h 25mONT-DUB
$454
7/1Mon
1 stopAmerican Airlines
35h 01mONT-DUB
$536
6/30Sun
1 stopIberia
35h 01mONT-DUB
$551
6/23Sun
1 stopIberia
12h 56mONT-DUB
$741
6/22Sat
1 stopAmerican Airlines
35h 01mONT-DUB
$771
6/26Wed
2 stopsBritish Airways
18h 51mONT-DUB
$1,060
7/1Mon
2 stopsBritish Airways
19h 41mONT-DUB
$1,453

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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.
6/17Mon
multi-stopIberia
12h 56mONT-DUB
7/4Thu
multi-stopIberia
14h 17mDUB-ONT
$912
6/16Sun
multi-stopAmerican Airlines
12h 56mONT-DUB
7/4Thu
multi-stopAmerican Airlines
14h 17mDUB-ONT
$1,112
6/17Mon
multi-stopKLM
13h 15mONT-DUB
6/24Mon
multi-stopKLM
16h 42mDUB-ONT
$1,157
6/13Thu
multi-stopKLM
13h 15mONT-DUB
6/19Wed
multi-stopKLM
16h 42mDUB-ONT
$1,188
6/13Thu
multi-stopKLM
13h 15mONT-DUB
7/3Wed
multi-stopKLM
16h 44mDUB-ONT
$1,236
6/13Thu
multi-stopKLM
13h 15mONT-DUB
6/22Sat
multi-stopKLM
16h 42mDUB-ONT
$1,258
6/14Fri
multi-stopBritish Airways
35h 01mONT-DUB
6/22Sat
multi-stopBritish Airways
21h 15mDUB-ONT
$1,259
6/14Fri
multi-stopIberia
35h 01mONT-DUB
6/23Sun
multi-stopIberia
20h 37mDUB-ONT
$1,498
6/15Sat
multi-stopAir France
13h 15mONT-DUB
7/3Wed
multi-stopAir France
16h 44mDUB-ONT
$1,502
6/16Sun
multi-stopAmerican Airlines
12h 56mONT-DUB
6/17Mon
multi-stopAmerican Airlines
14h 17mDUB-ONT
$1,664

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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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