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ONT - DUB

Find cheap flights from Ontario to Dublin from $329

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 7/29. 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 6/8
Sat 6/15

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 43,968,530 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
6:02 am - 7:00 amONT-DUB
17h 58m2 stops
11:50 am - 10:05 pmDUB-ONT
18h 15m2 stops
$570United Airlines
Find Deal
Wed, Oct 30 - Tue, Nov 12
7:00 am - 8:45 amONT-DUB
17h 45m1 stop
12:20 pm - 10:28 pmDUB-ONT
18h 08m1 stop
$663Delta
Find Deal
Sun, Oct 20 - Wed, Nov 6
12:45 pm - 9:45 amONT-DUB
13h 00m1 stop
12:40 pm - 11:26 pmDUB-ONT
18h 46m1 stop
$723Iberia
Find Deal
Wed, Sep 4 - Thu, Sep 19
8:10 am - 9:45 amONT-DUB
17h 35m1 stop
9:30 am - 8:21 pmDUB-ONT
18h 51m2 stops
$726American Airlines
Find Deal
Tue, Aug 13 - Sat, Aug 31
8:41 am - 9:45 amONT-DUB
17h 04m1 stop
12:40 pm - 9:42 pmDUB-ONT
17h 02m1 stop
$809Iberia
Find Deal
Sat, Sep 21 - Mon, Sep 30
11:30 pm - 5:00 amONT-DUB
21h 30m1 stop
11:45 am - 10:59 pmDUB-ONT
19h 14m1 stop
$847American Airlines
Find Deal
Sun, May 26 - Sun, Jun 9
12:49 pm - 2:35 pmONT-DUB
17h 46m2 stops
7:15 am - 6:27 pmDUB-ONT
19h 12m2 stops
$851British Airways
Find Deal
Mon, Jun 17 - Mon, Aug 19
6:00 am - 9:45 amONT-DUB
19h 45m1 stop
7:15 am - 10:03 pmDUB-ONT
22h 48m2 stops
$859British Airways
Find Deal
Sun, Jun 16 - Mon, Aug 19
11:30 am - 8:45 amONT-DUB
13h 15m1 stop
11:00 am - 10:12 pmDUB-ONT
19h 12m1 stop
$870KLM
Find Deal
Sun, Jun 16 - Mon, Aug 19
11:30 am - 8:45 amONT-DUB
13h 15m1 stop
11:00 am - 7:05 pmDUB-ONT
16h 05m1 stop
$902KLM
Find Deal
Sat, Jun 15 - Mon, Aug 19

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 $516 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $1,081 and $1,076 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 63 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 $570 on United Airlines, followed by Delta ($663). One-way flight deals have also been found from as low as $443 on United Airlines and from $453 on Air France.

Good to know

Low season

March

High season

May

Cheapest flight

$329
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 45% 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 $329 for a one-way ticket and $570 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 $803 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 10778 reviews
7.9Comfort
8.0Entertainment
7.4Food
8.2Boarding
8.6Crew
Airline reviews

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

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

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).

You need to be a hacker to get the (Free) WiFi

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.

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.

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

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.

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

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.

Boarding process was chaotic and disorganized. The plane needs updating in the interior. Things are broken, worn out, and dated

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

I like the team but I don't like the food you provided with money. I want free food and free water.

Iberia personnel on the ground is so rude. I would think twice in the future before booking another Iberia flight

I’m hoping for WiFi included. Everything else was very good

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

Excellent! Great flight attendants, good food (in business class, at least), very comfortable. Touchscreen and remote wasn’t great.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

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.
7/29Mon
2 stops
36h 11mONT-DUB
$329
7/29Mon
3 stops
37h 09mONT-DUB
$362
9/9Mon
1 stopAmerican Airlines
22h 00mONT-DUB
$662
9/19Thu
1 stopIberia
14h 55mONT-DUB
$663
10/29Tue
1 stopKLM
13h 40mONT-DUB
$673
7/5Fri
1 stopKLM
13h 15mONT-DUB
$698
5/20Mon
1 stopAmerican Airlines
25h 46mONT-DUB
$801
6/21Fri
1 stopIberia
12h 56mONT-DUB
$835
6/27Thu
2 stopsBritish Airways
20h 21mONT-DUB
$1,018
8/20Tue
1 stopBritish Airways
13h 05mONT-DUB
$9,389

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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.
5/11Sat
multi-stopUnited Airlines
17h 05mONT-DUB
5/13Mon
multi-stopUnited Airlines
17h 29mDUB-ONT
$898
5/14Tue
multi-stopBritish Airways
16h 55mONT-DUB
5/20Mon
multi-stopBritish Airways
15h 28mDUB-ONT
$1,086
5/14Tue
multi-stopBritish Airways
16h 55mONT-DUB
5/20Mon
multi-stopBritish Airways
18h 26mDUB-ONT
$1,095
5/12Sun
multi-stopIberia
18h 14mONT-DUB
5/20Mon
multi-stopIberia
19h 16mDUB-ONT
$1,183
5/11Sat
multi-stopIberia
19h 35mONT-DUB
5/13Mon
multi-stopIberia
19h 16mDUB-ONT
$1,306
5/11Sat
multi-stopIberia
15h 11mONT-DUB
5/13Mon
multi-stopIberia
15h 28mDUB-ONT
$1,653
5/12Sun
multi-stopIberia
12h 55mONT-DUB
6/30Sun
multi-stopIberia
20h 37mDUB-ONT
$2,329
5/13Mon
multi-stopAmerican Airlines
12h 55mONT-DUB
5/24Fri
multi-stopAmerican Airlines
15h 28mDUB-ONT
$2,340
5/12Sun
multi-stopIberia
12h 55mONT-DUB
6/30Sun
multi-stopIberia
14h 17mDUB-ONT
$2,519
5/14Tue
multi-stopIberia
12h 55mONT-DUB
6/11Tue
multi-stopIberia
14h 17mDUB-ONT
$7,179

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Ontario - Dublin Flights

Departure:

Ontario (undefined)United States

Destination:

Dublin (DUB)Ireland

Return flight deals:

Dublin - Ontario

Cabin classes:

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