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$446+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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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 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$446
(United Airlines)
Provider with most accurate pricing for Dublin-Ontario flight deals.
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Provider most trusted by Cheapflights users for Dublin-Ontario flights.
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From Dublin to Ontario
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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 January 20, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. 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 3/39:00 amDUB - ONT
2 stops32h 15mUnited Airlines
Mon 3/106:00 amONT - DUB
2 stops21h 05mUnited Airlines
Deal found 1/20$446
This Iberia deal was found by Cheapflights users on 1/20. 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 4/2512:40 pmDUB - ONT
1 stop19h 11mMultiple Airlines
Sat 5/37:00 amONT - DUB
2 stops18h 35mMultiple Airlines
Deal found 1/20$463
This American Airlines deal was found by Cheapflights users on 1/20. 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 4/2412:40 pmDUB - ONT
1 stop33h 06mAmerican Airlines
Sun 5/42:44 pmONT - DUB
1 stop35h 01mAmerican Airlines
Deal found 1/20$478
This Iberia deal was found by Cheapflights users on 1/20. 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 4/1612:40 pmDUB - ONT
1 stop19h 11mIberia
Mon 4/2112:50 pmONT - DUB
1 stop12h 55mIberia
Deal found 1/20$509
This Delta deal was found by Cheapflights users on 1/20. 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 3/312:00 pmDUB - ONT
1 stop18h 52mDelta
Mon 3/105:40 amONT - DUB
2 stops27h 00mDelta
Deal found 1/20$528
This Netflights deal was found by Cheapflights users on 1/20. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/226:40 amDUB - ONT
2 stops19h 55mBritish Airways
Wed 2/262:54 pmONT - DUB
2 stops16h 46mBritish Airways
Deal found 1/20$616
This KLM deal was found by Cheapflights users on 1/20. 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.
Mon 4/2111:00 amDUB - ONT
1 stop19h 41mKLM
Mon 5/57:00 amONT - DUB
1 stop17h 45mKLM
Deal found 1/20$651
This Billigflug deal was found by Cheapflights users on 1/20. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:00 pmDUB - ONT
1 stop18h 52mAir France
Thu 3/137:00 amONT - DUB
1 stop19h 45mAir France
Deal found 1/20$1,372
This Air Canada deal was found by Cheapflights users on 1/20. 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.
Sun 5/119:50 amDUB - ONT
2 stops34h 34mAir Canada
Thu 5/226:00 amONT - DUB
2 stops17h 45mAir Canada
Deal found 1/20$2,671

Find flights from Dublin to Ontario within your budget

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 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 3/3

9:00 am-9:15 am

2 stops32h 15m

Ontario

Mon 3/10

6:00 am-10:05 am

2 stops21h 05m

$446

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 4/25

12:40 pm-11:51 pm

1 stop19h 11m

Ontario

Sat 5/3

7:00 am-9:35 am

2 stops18h 35m

$463

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/24

12:40 pm-1:46 pm

1 stop33h 06m

Ontario

Sun 5/4

2:44 pm-9:45 am

1 stop35h 01m

$478

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 4/16

12:40 pm-11:51 pm

1 stop19h 11m

Ontario

Mon 4/21

12:50 pm-9:45 am

1 stop12h 55m

$509

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 3/3

12:00 pm-10:52 pm

1 stop18h 52m

Ontario

Mon 3/10

5:40 am-3:40 pm

2 stops27h 00m

$528

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 2/22

6:40 am-6:35 pm

2 stops19h 55m

Ontario

Wed 2/26

2:54 pm-3:40 pm

2 stops16h 46m

$616

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 4/21

11:00 am-10:41 pm

1 stop19h 41m

Ontario

Mon 5/5

7:00 am-8:45 am

1 stop17h 45m

$651

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 3/6

12:00 pm-10:52 pm

1 stop18h 52m

Ontario

Thu 3/13

7:00 am-9:45 am

1 stop19h 45m

$1,372

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 5/11

9:50 am-12:24 pm

2 stops34h 34m

Ontario

Thu 5/22

6:00 am-7:45 am

2 stops17h 45m

$2,671

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 3/31

5:55 am-4:34 pm

2 stops18h 39m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 16 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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dublin-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Dublin to Ontario

Get recent, data-driven insights about flights from Dublin to Ontario including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Dublin to Ontario (average of $246). Flying from Dublin to Ontario in March is currently the most expensive (average of $311). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 20, 2025.
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,982 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying from Dublin to Ontario round-trip?

    Flying on United Airlines is currently your cheapest option to Ontario, with prices starting at $446. Additional round-trip tickets that might be worth considering are offered by American Airlines and Iberia, with the lowest prices starting at $478 and $509, respectively.

  • What are the cheapest airlines to fly from Dublin to Ontario one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $634. However, be on the lookout for offers from Iberia and KLM, as they are both options that can get you from Dublin to Ontario for a low price.

  • 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, August is the cheapest month in which you can book a flight from Dublin to Ontario (average of $246). Flying from Dublin to Ontario in March is currently the most expensive (average of $311). 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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