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$494+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Dec 8 — Dec 151
Mon 12/8
Mon 12/15
1 adult, Economy
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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 November 8, 2025.

This Iberia deal was found by Cheapflights users on 11/6. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:55 pmDUB - ONT
1 stop17h 34mIberia
Sat 11/2910:47 amONT - DUB
1 stop12h 23mIberia
Deal found 11/6$517
This Iberia deal was found by Cheapflights users on 11/8. 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.
Sat 11/1512:55 pmDUB - ONT
1 stop17h 34mIberia
Sun 11/307:00 amONT - DUB
1 stop16h 10mIberia
Deal found 11/8$520
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2110:40 amDUB - ONT
2 stops20h 11mUnited Airlines
Sat 11/297:00 amONT - DUB
1 stop17h 10mUnited Airlines
Deal found 11/6$666
This Iberia deal was found by Cheapflights users on 11/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:55 pmDUB - ONT
1 stop17h 33mIberia
Mon 12/2910:50 amONT - DUB
1 stop12h 25mIberia
Deal found 11/7$687
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:40 amDUB - ONT
1 stop19h 45mUnited Airlines
Thu 1/86:00 amONT - DUB
2 stops17h 30mUnited Airlines
Deal found 11/6$723
This KLM deal was found by Cheapflights users on 11/7. 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 12/79:45 amDUB - ONT
1 stop17h 54mKLM
Sun 12/2111:10 amONT - DUB
1 stop12h 35mKLM
Deal found 11/7$759
This Finnair deal was found by Cheapflights users on 11/7. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:30 amDUB - ONT
2 stops18h 29mMultiple Airlines
Sun 11/306:11 amONT - DUB
2 stops16h 59mMultiple Airlines
Deal found 11/7$763
This Iberia deal was found by Cheapflights users on 11/6. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:55 pmDUB - ONT
1 stop17h 34mIberia
Fri 11/1410:47 amONT - DUB
1 stop12h 23mIberia
Deal found 11/6$945
This Iberia deal was found by Cheapflights users on 11/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/812:55 pmDUB - ONT
1 stop17h 34mIberia
Sat 11/1510:47 amONT - DUB
1 stop12h 23mIberia
Deal found 11/7$947
This Finnair deal was found by Cheapflights users on 11/7. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:55 pmDUB - ONT
1 stop17h 19mMultiple Airlines
Sat 1/310:50 amONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 11/7$1,068
This Icelandair deal was found by Cheapflights users on 11/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:30 amDUB - ONT
2 stops20h 02mMultiple Airlines
Wed 12/1011:15 amONT - DUB
2 stops15h 00mMultiple Airlines
Deal found 11/6$1,090

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 November 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$487
(Delta)

Popular in

July

Cheapest in

February

Average price

$583
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. 17% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 8, 2025.
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

Wed 2/25

9:30 am-10:57 pm

2 stops21h 27m

Ontario

Sun 3/1

6:00 am-9:55 am

2 stops19h 55m

$494

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 11/21

12:55 pm-10:23 pm

1 stop17h 28m

Ontario

Sat 11/29

7:00 am-7:10 am

1 stop16h 10m

$517

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 2/25

9:45 am-9:07 pm

1 stop19h 22m

Ontario

Sun 3/1

7:30 am-7:45 am

2 stops16h 15m

$517

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 2/25

9:45 am-9:07 pm

1 stop19h 22m

Ontario

Sun 3/1

10:20 pm-7:45 am

1 stop25h 25m

$572

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 11/22

10:40 am-10:51 pm

2 stops20h 11m

Ontario

Sat 11/29

7:00 am-8:10 am

1 stop17h 10m

$666

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 11/21

10:40 am-10:51 pm

2 stops20h 11m

Ontario

Sat 11/29

7:00 am-8:10 am

1 stop17h 10m

$666

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 1/18

11:30 am-10:13 pm

2 stops18h 43m

$585

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 12/27

12:55 pm-11:46 pm

1 stop18h 51m

$587

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 5/1

12:40 pm-8:18 pm

1 stop15h 38m

$631

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 11/18

9:10 am-9:49 pm

2 stops20h 39m

$702

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 18 results
1
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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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 $697). 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 17h 28m. Fly via United Airlines, Iberia, or Delta 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 $697). 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

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