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Cheap flights from Dublin to Ontario from £279

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
9 Aug — 16 Aug1
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 10 July 2026.

Wed 18/1109:45
DUB
-
ONT
1 stop16h 33m
KLM
Wed 9/1207:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 10/7£590
Tue 20/1011:00
DUB
-
ONT
1 stop17h 18m
KLM
Wed 4/1107:05
ONT
-
DUB
1 stop16h 40m
KLM
Deal found 6/7£615
Thu 10/911:00
DUB
-
ONT
1 stop17h 07m
KLM
Wed 2/1207:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 6/7£621
Thu 27/811:00
DUB
-
ONT
1 stop15h 30m
Delta
Tue 1/906:00
ONT
-
DUB
2 stops17h 55m
Delta
Deal found 9/7£635
Thu 27/806:30
DUB
-
ONT
2 stops24h 29m
British Airways
Tue 1/914:27
ONT
-
DUB
2 stops18h 48m
British Airways
Deal found 9/7£641
Wed 18/1111:30
DUB
-
ONT
2 stops19h 24m
Multiple Airlines
Wed 9/1210:05
ONT
-
DUB
2 stops16h 10m
Multiple Airlines
Deal found 10/7£715
Fri 24/705:55
DUB
-
ONT
2 stops19h 26m
Delta
Tue 28/711:48
ONT
-
DUB
2 stops22h 37m
Delta
Deal found 8/7£720
Sat 25/711:35
DUB
-
ONT
2 stops17h 07m
United Airlines
Wed 29/705:00
ONT
-
DUB
2 stops20h 45m
United Airlines
Deal found 10/7£725
Sat 18/710:00
DUB
-
ONT
2 stops20h 23m
Delta
Tue 21/711:48
ONT
-
DUB
1 stop12h 57m
Delta
Deal found 6/7£747
Tue 20/1014:15
DUB
-
ONT
2 stops17h 30m
Icelandair
Thu 5/1106:00
ONT
-
DUB
2 stops20h 15m
Icelandair
Deal found 6/7£771
Mon 13/711:00
DUB
-
ONT
1 stop15h 30m
Multiple Airlines
Sun 26/711:48
ONT
-
DUB
1 stop12h 57m
Multiple Airlines
Deal found 10/7£776

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 10 July 2026.

Round-trip from

£590

One-way from

£279

Popular in

July

Cheapest in

January

Average price

£739
KLM
  • KLM
  • 18/11-9/12
  • 2 total stops
  • 33h 18m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 24/8
  • 1 total stop
  • 19h 08m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£95 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 July 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 10 July 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

Wed 18/11

11:30-22:54

2 stops19h 24m

Ontario

Wed 9/12

10:05-10:15

2 stops16h 10m

£715
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 24/7

11:00-18:30

1 stop15h 30m

Ontario

Tue 28/7

11:48-08:45

1 stop12h 57m

£747

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 19/12

11:30-22:20

2 stops18h 50m

Ontario

Mon 4/1

08:05-10:15

2 stops18h 10m

£1,072

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 27/8

14:15-23:24

2 stops17h 09m

Ontario

Thu 10/9

10:47-11:05

2 stops16h 18m

£1,098

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 27/8

17:05-21:59

2 stops60h 54m

Ontario

Sat 12/9

21:10-09:35

2 stops52h 25m

£1,232

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 30/7

14:15-23:11

2 stops16h 56m

Ontario

Thu 20/8

12:25-11:05

2 stops14h 40m

£1,279

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 25/7

05:35-23:11

2 stops25h 36m

Ontario

Sat 1/8

23:18-23:05

2 stops39h 47m

£1,301

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 28/8

17:05-21:59

2 stops36h 54m

Ontario

Thu 10/9

21:10-09:35

2 stops52h 25m

£1,331

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 4/8

17:05-22:48

2 stops37h 43m

Ontario

Mon 10/8

23:59-16:00

2 stops32h 01m

£1,345

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 23/7

05:45-23:11

2 stops25h 26m

Ontario

Thu 6/8

23:59-23:05

2 stops39h 06m

£1,444

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 22 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 £747, Delta can have you in Ontario from Dublin in 15h 30m. 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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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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