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Ontario

$453+ 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap 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 December 28, 2025.

This Iberia deal was found by Cheapflights users on 12/25. 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 12/2612:55 pmDUB - ONT
1 stop17h 19mIberia
Tue 12/3010:50 amONT - DUB
1 stop12h 25mIberia
Deal found 12/25$1,154
This American Airlines deal was found by Cheapflights users on 12/28. 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.
Sun 12/2812:55 pmDUB - ONT
1 stop30h 58mAmerican Airlines
Thu 1/16:10 amONT - DUB
1 stop17h 00mAmerican Airlines
Deal found 12/28$1,205
This Finnair deal was found by Cheapflights users on 12/26. 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.
Tue 12/301:00 pmDUB - ONT
1 stop17h 14mMultiple Airlines
Sun 1/410:50 amONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 12/26$1,320
This American Airlines deal was found by Cheapflights users on 12/26. 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.
Tue 12/301:00 pmDUB - ONT
1 stop17h 14mAmerican Airlines
Sun 1/46:10 amONT - DUB
2 stops18h 30mAmerican Airlines
Deal found 12/26$1,325
This Finnair deal was found by Cheapflights users on 12/27. 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 12/2812:55 pmDUB - ONT
1 stop18h 51mMultiple Airlines
Tue 1/610:58 amONT - DUB
1 stop12h 17mMultiple Airlines
Deal found 12/27$1,531
This Kissandfly.com deal was found by Cheapflights users on 12/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:00 pmDUB - ONT
1 stop28h 38mMultiple Airlines
Wed 1/145:05 amONT - DUB
1 stop18h 25mMultiple Airlines
Deal found 12/27$1,572
This Finnair deal was found by Cheapflights users on 12/28. 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 12/2811:30 amDUB - ONT
2 stops18h 22mMultiple Airlines
Thu 1/110:50 amONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 12/28$1,595
This Gotogate deal was found by Cheapflights users on 12/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:00 amDUB - ONT
2 stops16h 43mAir Canada
Tue 12/305:05 amONT - DUB
2 stops18h 05mAir Canada
Deal found 12/25$1,754
This Kissandfly.com deal was found by Cheapflights users on 12/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:30 amDUB - ONT
2 stops19h 37mLufthansa
Wed 1/148:00 amONT - DUB
2 stops15h 30mLufthansa
Deal found 12/27$1,773
This Air Canada deal was found by Cheapflights users on 12/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:00 amDUB - ONT
2 stops16h 43mMultiple Airlines
Sun 1/116:00 amONT - DUB
2 stops17h 10mMultiple Airlines
Deal found 12/27$2,144
This American Airlines deal was found by Cheapflights users on 12/27. 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 12/273:20 pmDUB - ONT
2 stops16h 26mAmerican Airlines
Wed 12/3110:47 amONT - DUB
1 stop12h 28mAmerican Airlines
Deal found 12/27$5,083
This Finnair deal was found by Cheapflights users on 12/27. 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.
Mon 12/2912:55 pmDUB - ONT
1 stop17h 19mMultiple Airlines
Mon 1/510:50 amONT - DUB
1 stop12h 25mMultiple Airlines
Deal found 12/27$9,986

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$453
(British Airways)

Popular in

July

Cheapest in

February

Average price

$719
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 ($139 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 December 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 December 28, 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

Sat 2/14

5:55 pm-10:04 pm

2 stops36h 09m

Ontario

Sun 3/1

2:44 pm-7:40 pm

2 stops20h 56m

$453

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 2/15

10:45 am-10:49 pm

2 stops20h 04m

Ontario

Mon 3/2

7:10 am-5:05 pm

2 stops25h 55m

$453

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 2/12

8:50 am-10:49 pm

2 stops21h 59m

Ontario

Thu 2/26

5:06 pm-5:25 pm

2 stops16h 19m

$453

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 2/16

8:50 am-10:49 pm

2 stops21h 59m

Ontario

Sat 2/28

5:06 pm-5:40 pm

2 stops16h 34m

$453

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 2/14

3:10 pm-10:04 pm

2 stops38h 54m

Ontario

Wed 2/25

10:59 am-5:00 pm

2 stops22h 01m

$453

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 1/13

11:30 am-10:48 pm

2 stops19h 18m

Ontario

Sat 1/17

3:09 pm-8:40 am

2 stops33h 31m

$510

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/22

11:30 am-10:48 pm

2 stops19h 18m

Ontario

Sun 1/25

11:59 pm-8:40 am

2 stops24h 41m

$510

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/2

12:40 pm-10:30 pm

1 stop17h 50m

Ontario

Sat 4/11

12:55 pm-9:45 am

1 stop12h 50m

$561

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 5/4

12:40 pm-8:18 pm

1 stop15h 38m

Ontario

Sun 5/17

12:55 pm-9:45 am

1 stop12h 50m

$562

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 1/23

12:30 pm-10:53 pm

1 stop18h 23m

Ontario

Fri 1/30

6:00 am-11:25 am

1 stop21h 25m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 22 results
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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 December.
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 $698). 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 36h 09m. Fly via British Airways to get the fastest option. Airlines will cover a distance of 5132 mi.

  • 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 $698). 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.

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