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Cheap flights from Dublin to Ontario from £397

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

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 November 2025.

Round-trip from

£511

One-way from

£449

Popular in

July

Cheapest in

February

Average price

£470
United Airlines
  • United Airlines
  • 5/12-9/12
  • 5 total stops
  • 38h 49m total
  • Dublin to Ontario
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1/2
  • 1/2
  • 2 total stops
  • 18h 43m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from Dublin to Ontario

Enter your travel dates to find the best prices.

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 November 2025.

Sun 23/1112:55DUB - ONT
1 stop17h 28mMultiple Airlines
Sat 6/1210:47ONT - DUB
1 stop12h 23mMultiple Airlines
Deal found 16/11£397
Fri 5/1209:30DUB - ONT
3 stops21h 19mUnited Airlines
Tue 9/1206:00ONT - DUB
2 stops17h 30mUnited Airlines
Deal found 16/11£511
Wed 3/1212:30DUB - ONT
1 stop18h 19mMultiple Airlines
Sun 7/1206:00ONT - DUB
1 stop23h 10mMultiple Airlines
Deal found 17/11£516
Wed 10/1210:40DUB - ONT
2 stops20h 09mUnited Airlines
Thu 25/1205:05ONT - DUB
2 stops18h 25mUnited Airlines
Deal found 17/11£533
Sat 13/1212:55DUB - ONT
1 stop17h 33mMultiple Airlines
Fri 2/110:50ONT - DUB
1 stop12h 20mMultiple Airlines
Deal found 16/11£561
Wed 10/1209:45DUB - ONT
1 stop17h 54mKLM
Thu 25/1207:05ONT - DUB
1 stop16h 40mKLM
Deal found 17/11£611
Mon 24/1111:30DUB - ONT
2 stops20h 25mMultiple Airlines
Wed 10/1211:15ONT - DUB
2 stops15h 00mMultiple Airlines
Deal found 16/11£801
Wed 17/1209:45DUB - ONT
1 stop17h 54mKLM
Sun 4/111:10ONT - DUB
1 stop12h 35mKLM
Deal found 16/11£828
Sat 20/1212:55DUB - ONT
1 stop17h 19mMultiple Airlines
Mon 5/110:50ONT - DUB
1 stop12h 25mMultiple Airlines
Deal found 16/11£908
Mon 1/1212:55DUB - ONT
1 stop17h 28mMultiple Airlines
Fri 5/1210:47ONT - DUB
1 stop12h 23mMultiple Airlines
Deal found 17/11£928
Wed 19/1111:30DUB - ONT
2 stops18h 35mMultiple Airlines
Wed 3/1211:15ONT - DUB
2 stops15h 00mMultiple Airlines
Deal found 16/11£1,067

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 November 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

Wed 3/12

09:30-22:49

3 stops21h 19m

Ontario

Sun 7/12

05:05-07:30

2 stops18h 25m

£511

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 5/12

09:30-22:49

3 stops21h 19m

Ontario

Tue 9/12

06:00-07:30

2 stops17h 30m

£511

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 3/12

12:30-22:49

1 stop18h 19m

Ontario

Sun 7/12

06:00-13:10

1 stop23h 10m

£516

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 13/12

12:55-22:28

1 stop17h 33m

Ontario

Fri 2/1

10:50-07:10

1 stop12h 20m

£561

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 1/5

12:40-20:18

1 stop15h 38m

Ontario

Sat 16/5

12:55-09:45

1 stop12h 50m

£631

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 10/4

12:40-20:18

1 stop15h 38m

Ontario

Sat 25/4

12:55-09:45

1 stop12h 50m

£631

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 4/2

09:00-20:58

2 stops19h 58m

Ontario

Mon 16/2

13:45-07:10

2 stops33h 25m

£676

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 23/1

11:30-23:56

2 stops20h 26m

Ontario

Fri 30/1

08:55-10:15

2 stops17h 20m

£776

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 17/12

09:45-19:39

1 stop17h 54m

Ontario

Sun 4/1

11:10-07:45

1 stop12h 35m

£828

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/1

13:00-22:14

1 stop17h 14m

Ontario

Mon 5/1

10:50-07:15

1 stop12h 25m

£858

Flights are sorted by cheapest return flights first.

Deals found on 17/11

Showing 1-10 of 22 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, February is the cheapest month in which you can book a flight from Dublin to Ontario (average of £331). Flying from Dublin to Ontario in July is currently the most expensive (average of £530). 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 £511, United Airlines can have you in Ontario from Dublin in 21h 19m. The distance between Dublin and Ontario is about 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 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, February is the cheapest month in which you can book a flight from Dublin to Ontario (average of £331). Flying from Dublin to Ontario in July is currently the most expensive (average of £530). 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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