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$585+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$585
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$529
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
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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 5/112:40 pmDUB - ONT
2 stops17h 18mAmerican Airlines
Thu 5/82:44 pmONT - DUB
1 stop35h 01mAmerican Airlines
Deal found 2/20$585
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 5/111:35 amDUB - ONT
2 stops17h 18mUnited Airlines
Mon 5/125:05 amONT - DUB
2 stops22h 05mUnited Airlines
Deal found 2/20$668
This KLM deal was found by Cheapflights users on 2/20. 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.
Thu 3/2012:00 pmDUB - ONT
1 stop17h 43mKLM
Thu 3/2712:46 pmONT - DUB
1 stop13h 59mKLM
Deal found 2/20$680
This Iberia deal was found by Cheapflights users on 2/20. 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.
Thu 5/112:40 pmDUB - ONT
1 stop17h 30mIberia
Mon 5/1212:46 pmONT - DUB
1 stop12h 59mIberia
Deal found 2/20$692
This Kissandfly.com deal was found by Cheapflights users on 2/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/177:30 amDUB - ONT
2 stops18h 50mBritish Airways
Mon 4/212:44 pmONT - DUB
2 stops18h 31mBritish Airways
Deal found 2/20$706
This Iberia deal was found by Cheapflights users on 2/20. 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.
Thu 4/1712:40 pmDUB - ONT
1 stop19h 10mMultiple Airlines
Mon 4/217:00 amONT - DUB
2 stops18h 40mMultiple Airlines
Deal found 2/20$721

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 February 20, 2025.

Fly from

Dublin

Fly to

Ontario

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 5/1

12:40 pm-9:58 pm

2 stops17h 18m

Ontario

Sun 5/11

11:59 pm-9:45 am

1 stop25h 46m

$585

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 5/1

11:35 am-8:53 pm

2 stops17h 18m

Ontario

Mon 5/12

5:05 am-11:10 am

2 stops22h 05m

$668

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 3/20

12:00 pm-10:43 pm

1 stop17h 43m

Ontario

Thu 3/27

12:46 pm-9:45 am

1 stop13h 59m

$680

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 5/1

12:40 pm-10:10 pm

1 stop17h 30m

Ontario

Mon 5/12

12:46 pm-9:45 am

1 stop12h 59m

$692

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/17

7:30 am-6:20 pm

2 stops18h 50m

Ontario

Mon 4/21

2:44 pm-5:15 pm

2 stops18h 31m

$706

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/17

12:40 pm-11:50 pm

1 stop19h 10m

Ontario

Mon 4/21

7:00 am-9:40 am

2 stops18h 40m

$721

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/10

12:40 pm-10:10 pm

1 stop17h 30m

$597

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/10

10:40 am-10:10 pm

2 stops19h 30m

$598

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 3/28

8:40 am-11:54 pm

2 stops22h 14m

$599

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 3/20

12:00 pm-10:43 pm

1 stop17h 43m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 15 results
1
2
  • 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 $315). 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 February 20, 2025.
Read reviews from past customers who have flown Delta, KLM and United Airlines from Dublin to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

WestJet
7.2
Good
2,801 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 American Airlines is currently your cheapest option to Ontario, with prices starting at $585. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $668 and $680, respectively.

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

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as $597. However, be on the lookout for offers from British Airways 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 $315). 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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