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Cheap flights from Dublin to Ontario from £429

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
23 Aug — 30 Aug1
1 adult

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 18 August 2025.

Round-trip from

£437

One-way from

£429

Popular in

July

Cheapest in

February

Average price

£611
20/12-24/12
  • 20/12-24/12
  • 2 total stops
  • 40h 19m total
  • Dublin to Ontario
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JetBlue
  • JetBlue
  • 8/10
  • 1 total stop
  • 17h 59m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£72 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in August 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 18 August 2025.

Sat 20/1212:55DUB - ONT
1 stop17h 08mMultiple Airlines
Wed 24/1223:59ONT - DUB
1 stop23h 11mMultiple Airlines
Deal found 17/8£437
Fri 26/912:40DUB - ONT
1 stop14h 14mIberia
Mon 6/1012:48ONT - DUB
1 stop12h 57mIberia
Deal found 16/8£439
Fri 3/1012:40DUB - ONT
1 stop14h 14mIberia
Tue 14/1012:47ONT - DUB
1 stop12h 58mIberia
Deal found 16/8£457
Wed 3/911:00DUB - ONT
1 stop16h 11mKLM
Wed 17/911:55ONT - DUB
1 stop12h 50mKLM
Deal found 17/8£546
Fri 5/911:00DUB - ONT
1 stop16h 11mKLM
Wed 17/911:55ONT - DUB
1 stop12h 50mKLM
Deal found 17/8£555
Thu 4/911:00DUB - ONT
1 stop16h 11mDelta
Wed 17/911:55ONT - DUB
1 stop12h 50mDelta
Deal found 18/8£563
Mon 1/911:00DUB - ONT
1 stop16h 11mDelta
Fri 12/911:55ONT - DUB
1 stop12h 50mDelta
Deal found 16/8£571
Fri 3/1009:50DUB - ONT
2 stops35h 01mAir Canada
Tue 14/1018:36ONT - DUB
2 stops53h 09mAir Canada
Deal found 16/8£574
Mon 17/1112:55DUB - ONT
1 stop17h 34mMultiple Airlines
Tue 25/1119:21ONT - DUB
1 stop33h 49mMultiple Airlines
Deal found 17/8£578
Sat 4/1011:30DUB - ONT
1 stop17h 59mJetBlue
Sun 12/1022:56ONT - DUB
1 stop25h 24mJetBlue
Deal found 16/8£580

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 18 August 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 20/12

12:55-22:03

1 stop17h 08m

Ontario

Wed 24/12

23:59-07:10

1 stop23h 11m

£437

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 6/10

12:40-19:02

1 stop14h 22m

Ontario

Wed 22/10

12:47-09:45

1 stop12h 58m

£439

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 26/9

12:40-18:54

1 stop14h 14m

Ontario

Mon 6/10

12:48-09:45

1 stop12h 57m

£439

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 3/10

12:40-18:54

1 stop14h 14m

Ontario

Sun 12/10

12:48-09:45

1 stop12h 57m

£457

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 3/10

12:40-18:54

1 stop14h 14m

Ontario

Tue 14/10

12:47-09:45

1 stop12h 58m

£457

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 3/10

12:40-18:54

1 stop14h 14m

Ontario

Mon 13/10

12:48-09:45

1 stop12h 57m

£457

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 1/10

11:00-19:15

1 stop16h 15m

Ontario

Mon 6/10

11:36-08:45

1 stop13h 09m

£546

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 3/9

11:00-19:11

1 stop16h 11m

Ontario

Wed 17/9

11:55-08:45

1 stop12h 50m

£546

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 5/9

11:00-19:11

1 stop16h 11m

Ontario

Wed 17/9

11:55-08:45

1 stop12h 50m

£555

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 1/9

11:00-19:11

1 stop16h 11m

Ontario

Wed 17/9

11:55-08:45

1 stop12h 50m

£563

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 23 results
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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 return 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, March is the cheapest month in which you can book a flight from Dublin to Ontario (average of £516). Flying from Dublin to Ontario in August is currently the most expensive (average of £827). 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.

  • 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 holiday 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, March is the cheapest month in which you can book a flight from Dublin to Ontario (average of £516). Flying from Dublin to Ontario in August is currently the most expensive (average of £827). 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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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Dublin to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Dublin to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Dublin.

Can Cheapflights find flights from Dublin to Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dublin to Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Dublin to Ontario become cheaper?

Of course! You can now track prices for flights from Dublin to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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