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Cheap flights from Dublin to Ontario from £284

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
5 Sep — 12 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 6 August 2026.

Tue 8/909:50 -
2 stops21h 09m
Thu 24/912:37 -
1 stop13h 08m
Deal found 3/8£524
Fri 11/912:40 -
1 stop15h 27m
Fri 18/912:37 -
1 stop13h 08m
Deal found 1/8£528
Fri 11/911:45 -
2 stops32h 18m
Fri 18/912:37 -
1 stop13h 08m
Deal found 1/8£529
Wed 21/1012:40 -
1 stop14h 04m
Thu 29/1010:25 -
1 stop13h 45m
Deal found 5/8£538
Tue 8/909:30 -
2 stops21h 29m
Thu 24/908:25 -
2 stops17h 10m
Deal found 3/8£547
Wed 21/1012:40 -
1 stop16h 31m
Sat 31/1007:00 -
1 stop17h 10m
Deal found 3/8£561
Mon 19/1012:40 -
1 stop19h 12m
Wed 28/1010:25 -
1 stop13h 45m
Deal found 5/8£564
Mon 19/1012:40 -
1 stop19h 12m
Sat 31/1010:25 -
1 stop13h 45m
Deal found 3/8£566
Fri 6/1109:40 -
1 stop17h 50m
Fri 4/1207:00 -
1 stop16h 45m
Deal found 4/8£605
Tue 27/1010:40 -
1 stop15h 07m
Tue 3/1109:25 -
2 stops16h 30m
Deal found 2/8£627
Thu 3/911:30 -
1 stop19h 08m
Thu 17/922:39 -
1 stop26h 21m
Deal found 3/8£628

Find 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 6 August 2026.

Round-trip from

£524

One-way from

£284

Popular in

July

Cheapest in

January

Average price

£679
Iberia
  • Iberia
  • 8/9-24/9
  • 3 total stops
  • 34h 17m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 27/8
  • 1 total stop
  • 19h 08m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£94 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 6 August 2026.
Use the filters below to find and compare flights from Dublin to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 20/1

10:40-18:44

1 stop16h 04m

Ontario

Sun 24/1

06:00-07:30

2 stops17h 30m

£606

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 20/10

11:00-20:25

1 stop17h 25m

Ontario

Sun 1/11

07:07-07:45

1 stop16h 38m

£629

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 21/10

11:00-20:25

1 stop17h 25m

Ontario

Sun 1/11

07:07-07:45

1 stop16h 38m

£632

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 15/9

09:20-22:59

2 stops21h 39m

Ontario

Tue 22/9

07:00-07:20

2 stops16h 20m

£645

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 20/10

11:00-20:25

1 stop17h 25m

Ontario

Fri 30/10

12:18-07:45

1 stop12h 27m

£651
Fastest return journey

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 22/10

11:00-18:22

1 stop15h 22m

Ontario

Fri 30/10

12:18-07:45

1 stop12h 27m

£654

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 21/10

11:00-20:25

1 stop17h 25m

Ontario

Fri 30/10

12:18-07:45

1 stop12h 27m

£654

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 8/12

11:30-22:39

2 stops19h 09m

Ontario

Tue 5/1

10:03-10:15

2 stops16h 12m

£711

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 15/9

17:10-20:57

2 stops59h 47m

Ontario

Tue 13/10

23:05-16:05

2 stops33h 00m

£898

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Mon 14/9

17:10-20:57

2 stops59h 47m

Ontario

Tue 13/10

23:05-16:05

2 stops33h 00m

£1,026

Flights are sorted by cheapest return flights first.

Deals found on 1/8

Showing 1-10 of 23 resultsSorted by cheapest first
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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.

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 £606, British Airways can have you in Ontario from Dublin in 16h 04m. 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.

See more FAQs

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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