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Cheap flights from Dublin to Ontario from £418

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
18 loka — 25 loka1
1 adult
1 adult, Economy

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 syyskuu 2025.

Round-trip from

£423

Popular in

July

Cheapest in

February

Average price

£470
19/12-28/12
  • 19/12-28/12
  • 2 total stops
  • 29h 39m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£73 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 September 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 syyskuu 2025.

ke 24/913:20DUB - ONT
2 stops18h 22mKLM
ke 1/1007:05ONT - DUB
1 stop17h 40mKLM
Deal found 17/9£418
pe 19/1212:55DUB - ONT
1 stop17h 19mMultiple Airlines
su 28/1210:50ONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 17/9£423
pe 3/1011:00DUB - ONT
1 stop16h 15mKLM
su 5/1011:55ONT - DUB
1 stop12h 50mKLM
Deal found 16/9£424
pe 19/1212:55DUB - ONT
1 stop17h 19mMultiple Airlines
pe 2/110:50ONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 16/9£437
ma 27/1012:55DUB - ONT
1 stop16h 23mMultiple Airlines
su 9/1110:47ONT - DUB
1 stop12h 23mMultiple Airlines
Deal found 18/9£440
ma 27/1010:45DUB - ONT
2 stops20h 14mBritish Airways
su 9/1110:47ONT - DUB
2 stops17h 28mBritish Airways
Deal found 17/9£444
la 20/1212:55DUB - ONT
1 stop17h 19mMultiple Airlines
pe 2/110:50ONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 16/9£472
pe 3/1011:00DUB - ONT
1 stop16h 15mKLM
ti 7/1011:36ONT - DUB
1 stop13h 09mKLM
Deal found 17/9£487
su 28/911:30DUB - ONT
1 stop17h 59mJetBlue
pe 3/1022:56ONT - DUB
1 stop25h 24mJetBlue
Deal found 16/9£580
ma 22/911:00DUB - ONT
1 stop16h 15mKLM
ma 6/1011:36ONT - DUB
1 stop13h 09mKLM
Deal found 17/9£602
su 21/911:00DUB - ONT
1 stop16h 15mKLM
la 27/911:55ONT - DUB
1 stop12h 50mKLM
Deal found 17/9£604

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 syyskuu 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

pe 19/12

12:55-22:14

1 stop17h 19m

Ontario

su 28/12

10:50-07:10

1 stop12h 20m

£423

DublinOntario

DUB - ONT

DUBONT

Dublin

pe 3/10

11:00-19:15

1 stop16h 15m

Ontario

su 5/10

11:55-08:45

1 stop12h 50m

£424

DublinOntario

DUB - ONT

DUBONT

Dublin

pe 19/12

12:55-22:14

1 stop17h 19m

Ontario

pe 2/1

10:50-07:10

1 stop12h 20m

£437

DublinOntario

DUB - ONT

DUBONT

Dublin

ke 25/2

09:45-21:14

1 stop19h 29m

Ontario

su 1/3

06:45-07:45

2 stops17h 00m

£440

DublinOntario

DUB - ONT

DUBONT

Dublin

ma 27/10

12:55-22:18

1 stop16h 23m

Ontario

su 9/11

10:47-07:10

1 stop12h 23m

£455

DublinOntario

DUB - ONT

DUBONT

Dublin

la 20/12

12:55-22:14

1 stop17h 19m

Ontario

pe 2/1

10:50-07:10

1 stop12h 20m

£472

DublinOntario

DUB - ONT

DUBONT

Dublin

ke 25/2

09:45-21:14

1 stop19h 29m

Ontario

su 1/3

22:30-07:45

1 stop25h 15m

£481

DublinOntario

DUB - ONT

DUBONT

Dublin

pe 3/10

11:00-19:15

1 stop16h 15m

Ontario

ti 7/10

11:36-08:45

1 stop13h 09m

£487

DublinOntario

DUB - ONT

DUBONT

Dublin

su 26/10

12:55-22:18

1 stop16h 23m

Ontario

la 8/11

10:46-07:10

1 stop12h 24m

£633

DublinOntario

DUB - ONT

DUBONT

Dublin

su 5/10

11:00-19:15

1 stop16h 15m

Ontario

pe 10/10

11:36-08:45

1 stop13h 09m

£666

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 21 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.

  • How long is the flight from Dublin to Ontario?

    For as low as £424, KLM can have you in Ontario from Dublin in 16h 15m. The distance between Dublin and Ontario is about 5132 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with 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 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.

See more FAQs

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How does Cheapflights help users find flights from Dublin to Ontario?

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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