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Cheap flights from Dublin to Ontario from £343

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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
21 Jun — 28 Jun1
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 22 May 2026.

Wed 30/911:30
DUB
-
ONT
1 stop16h 43m
JetBlue
Mon 5/1021:10
ONT
-
DUB
1 stop27h 50m
JetBlue
Deal found 20/5£516
Thu 18/612:40
DUB
-
ONT
1 stop15h 16m
Iberia
Wed 8/712:35
ONT
-
DUB
1 stop13h 10m
Iberia
Deal found 20/5£555
Thu 4/611:30
DUB
-
ONT
1 stop17h 17m
JetBlue
Sat 20/623:09
ONT
-
DUB
1 stop25h 51m
JetBlue
Deal found 18/5£564
Tue 1/911:30
DUB
-
ONT
1 stop19h 05m
JetBlue
Mon 14/921:10
ONT
-
DUB
1 stop27h 50m
JetBlue
Deal found 20/5£577
Wed 27/511:10
DUB
-
ONT
2 stops39h 12m
British Airways
Wed 24/614:18
ONT
-
DUB
2 stops18h 57m
British Airways
Deal found 19/5£579
Mon 2/1105:45
DUB
-
ONT
2 stops18h 27m
KLM
Sun 8/1107:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 20/5£598
Mon 14/1205:45
DUB
-
ONT
2 stops18h 27m
Delta
Fri 8/106:00
ONT
-
DUB
2 stops17h 55m
Delta
Deal found 19/5£631
Tue 2/608:55
DUB
-
ONT
2 stops21h 37m
Delta
Sat 6/622:00
ONT
-
DUB
2 stops25h 55m
Delta
Deal found 18/5£637
Sun 13/1209:45
DUB
-
ONT
1 stop16h 33m
Delta
Wed 6/106:00
ONT
-
DUB
2 stops17h 55m
Delta
Deal found 19/5£638

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 22 May 2026.

Round-trip from

£516

One-way from

£343

Popular in

July

Cheapest in

January

Average price

£529
JetBlue
  • JetBlue
  • 30/9-5/10
  • 2 total stops
  • 44h 33m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 6/6
  • 1 total stop
  • 17h 17m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 22 May 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 - ONT

DUBONT

Dublin

Tue 2/6

08:55-22:32

2 stops21h 37m

Ontario

Sat 6/6

22:00-07:55

2 stops25h 55m

£637

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 14/10

09:20-12:41

2 stops35h 21m

Ontario

Sun 18/10

07:00-09:45

1 stop18h 45m

£642
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/10

11:00-18:01

1 stop15h 01m

Ontario

Wed 7/10

12:00-08:45

1 stop12h 45m

£642

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/10

11:00-18:01

1 stop15h 01m

Ontario

Sun 11/10

12:00-08:45

1 stop12h 45m

£648

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 1/10

11:00-18:01

1 stop15h 01m

Ontario

Tue 6/10

12:00-08:45

1 stop12h 45m

£665

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 29/9

11:00-18:01

1 stop15h 01m

Ontario

Tue 6/10

12:00-08:45

1 stop12h 45m

£666

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 2/10

11:00-18:01

1 stop15h 01m

Ontario

Wed 7/10

12:00-08:45

1 stop12h 45m

£669

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 29/6

11:00-18:30

1 stop15h 30m

Ontario

Tue 14/7

11:48-08:45

1 stop12h 57m

£730

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 4/10

11:00-18:01

1 stop15h 01m

Ontario

Tue 6/10

22:59-08:45

1 stop25h 46m

£815

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 24/10

14:15-23:42

2 stops17h 27m

Ontario

Sat 31/10

11:29-10:15

2 stops15h 46m

£1,139

Flights are sorted by cheapest return flights first.

Deals found on 17/5

Showing 1-10 of 21 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 £637, Delta can have you in Ontario from Dublin in 21h 37m. 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

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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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