HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$508+ Cheap flights from Dublin (DUB) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dublin to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dublin to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$496
(Iberia)

Popular in

July

Cheapest in

February

Average price

$587
Provider with most accurate pricing for Dublin-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Ontario flights.
Search Deals
From Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Dublin to Ontario

Cheapest flights from Dublin to Ontario
Explore the most affordable flight options available from Dublin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This American Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2211:30 amDUB - ONT
2 stops34h 48mAmerican Airlines
Sun 1/257:16 amONT - DUB
2 stops17h 24mAmerican Airlines
Deal found 1/7$508
This Iberia deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/19:30 amDUB - ONT
1 stop22h 29mIberia
Wed 4/1510:59 amONT - DUB
1 stop14h 46mIberia
Deal found 1/8$559
This American Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2312:40 pmDUB - ONT
1 stop16h 46mAmerican Airlines
Mon 6/1512:46 pmONT - DUB
1 stop12h 59mAmerican Airlines
Deal found 1/7$560
This Trip.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:30 amDUB - ONT
1 stop21h 05mIberia
Mon 4/202:08 pmONT - DUB
1 stop35h 37mIberia
Deal found 1/7$585
This United Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/79:30 amDUB - ONT
2 stops20h 28mUnited Airlines
Sat 2/145:00 amONT - DUB
2 stops18h 30mUnited Airlines
Deal found 1/8$740
This Delta deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1210:45 amDUB - ONT
2 stops32h 46mDelta
Sat 1/1710:30 pmONT - DUB
2 stops26h 15mDelta
Deal found 1/6$830
This United Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1210:40 amDUB - ONT
2 stops34h 07mUnited Airlines
Sat 1/175:05 amONT - DUB
2 stops18h 25mUnited Airlines
Deal found 1/7$898
This KLM deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1911:00 amDUB - ONT
1 stop15h 28mKLM
Fri 5/17:00 amONT - DUB
1 stop17h 45mKLM
Deal found 1/7$905
This Trip.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/204:30 pmDUB - ONT
1 stop14h 29mMultiple Airlines
Sun 3/2910:56 amONT - DUB
1 stop14h 49mMultiple Airlines
Deal found 1/8$984
This Icelandair deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:15 pmDUB - ONT
2 stops16h 24mMultiple Airlines
Thu 10/1510:03 amONT - DUB
2 stops17h 02mMultiple Airlines
Deal found 1/7$1,006
This Delta deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1210:45 amDUB - ONT
2 stops42h 20mDelta
Wed 1/1410:30 pmONT - DUB
2 stops50h 15mDelta
Deal found 1/7$1,009

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Dublin to Ontario that are best for you.

Fly from

Dublin

Fly to

Ontario

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/22

11:30 am-2:18 pm

2 stops34h 48m

Ontario

Sun 1/25

7:16 am-8:40 am

2 stops17h 24m

$508

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 5/23

12:40 pm-9:26 pm

1 stop16h 46m

Ontario

Mon 6/15

12:46 pm-9:45 am

1 stop12h 59m

$560

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 5/26

12:40 pm-10:36 pm

1 stop17h 56m

Ontario

Mon 6/15

12:46 pm-9:45 am

1 stop12h 59m

$560

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 2/7

9:30 am-9:58 pm

2 stops20h 28m

Ontario

Sat 2/14

5:00 am-7:30 am

2 stops18h 30m

$740

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 4/19

11:00 am-6:28 pm

1 stop15h 28m

Ontario

Fri 5/1

7:00 am-8:45 am

1 stop17h 45m

$905

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 3/20

4:30 pm-11:59 pm

1 stop14h 29m

Ontario

Sun 3/29

10:56 am-9:45 am

1 stop14h 49m

$984

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/9

2:15 pm-10:40 pm

2 stops16h 25m

Ontario

Sat 4/18

10:59 am-11:05 am

2 stops16h 06m

$1,090

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/30

2:15 pm-11:59 pm

2 stops17h 44m

Ontario

Thu 5/7

10:48 am-11:05 am

2 stops16h 17m

$1,105

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 7/1

12:40 pm-9:26 pm

1 stop16h 46m

Ontario

Wed 7/15

12:46 pm-9:45 am

1 stop12h 59m

$1,312

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 5/25

12:40 pm-9:26 pm

1 stop16h 46m

Ontario

Tue 6/16

12:46 pm-9:45 am

1 stop12h 59m

$1,318

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Dublin to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dublin to Ontario in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Dublin-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Dublin-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Dublin-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dublin-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dublin to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Dublin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Dublin to Ontario

What is the cheapest month to book a flight from Dublin to Ontario?

Currently, February is the cheapest month in which you can book a flight from Dublin to Ontario (average of $436). Flying from Dublin to Ontario in July is currently the most expensive (average of $701). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Dublin to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Dublin to Ontario?

    There are many flights that can get you from Dublin to Ontario in 19h 18m. Fly via American Airlines or Iberia to get the fastest option. Airlines will cover a distance of 5132 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Dublin to Ontario that include hotel bookings?

    Yes. In addition to deals on Dublin to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Ontario.

  • Can I find deals for business class flights from Dublin to Ontario?

    Yes. Cheapflights offers flight deals from Dublin to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dublin to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Dublin to Ontario (average of $436). Flying from Dublin to Ontario in July is currently the most expensive (average of $701). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.