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Cheap flights from Dublin to Ontario from £379

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
18 Mar — 25 Mar1
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 16 February 2026.

Mon 2/1113:00
DUB
-
ONT
1 stop18h 57m
American Airlines
Wed 11/1110:47
ONT
-
DUB
1 stop12h 28m
American Airlines
Deal found 16/2£379
Sat 31/1013:00
DUB
-
ONT
1 stop15h 51m
Iberia
Sun 8/1110:47
ONT
-
DUB
1 stop12h 28m
Iberia
Deal found 16/2£385
Tue 3/313:25
DUB
-
ONT
2 stops30h 37m
Delta
Sat 7/315:30
ONT
-
DUB
2 stops32h 15m
Delta
Deal found 14/2£387
Thu 26/206:00
DUB
-
ONT
2 stops18h 02m
Delta
Thu 5/307:30
ONT
-
DUB
2 stops16h 15m
Delta
Deal found 16/2£392
Fri 29/512:50
DUB
-
ONT
2 stops17h 07m
British Airways
Thu 11/612:40
ONT
-
DUB
2 stops21h 15m
British Airways
Deal found 15/2£406
Fri 30/1009:45
DUB
-
ONT
1 stop15h 33m
KLM
Sun 8/1107:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 16/2£414
Thu 7/509:30
DUB
-
ONT
1 stop21h 06m
Iberia
Thu 14/507:30
ONT
-
DUB
1 stop18h 15m
Iberia
Deal found 13/2£422
Sat 31/1017:15
DUB
-
ONT
2 stops30h 57m
KLM
Sun 8/1107:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 16/2£472
Sun 1/1109:45
DUB
-
ONT
1 stop16h 33m
KLM
Sun 8/1107:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 16/2£487
Wed 28/1009:45
DUB
-
ONT
1 stop15h 33m
Delta
Mon 9/1107:00
ONT
-
DUB
1 stop16h 45m
Delta
Deal found 16/2£560

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 16 February 2026.

Round-trip from

£387

Popular in

July

Cheapest in

January

Average price

£458
Delta
  • Delta
  • 3/3-7/3
  • 4 total stops
  • 62h 52m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 16 February 2026.
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

Tue 3/3

17:15-16:02

2 stops30h 47m

Ontario

Sat 7/3

13:15-07:45

1 stop34h 30m

£387

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 3/3

13:25-12:02

2 stops30h 37m

Ontario

Sat 7/3

22:20-07:45

2 stops25h 25m

£388

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 26/2

06:00-16:02

2 stops18h 02m

Ontario

Thu 5/3

07:30-07:45

2 stops16h 15m

£392

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 29/5

12:40-19:56

1 stop15h 16m

Ontario

Tue 9/6

10:22-09:45

1 stop15h 23m

£406

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 27/5

20:30-19:56

2 stops31h 26m

Ontario

Thu 11/6

12:40-17:55

2 stops21h 15m

£406

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 26/5

12:50-21:57

2 stops17h 07m

Ontario

Thu 11/6

12:40-17:55

2 stops21h 15m

£406

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 25/5

10:30-21:57

2 stops19h 27m

Ontario

Thu 11/6

12:40-17:55

2 stops21h 15m

£406

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 29/5

12:50-21:57

2 stops17h 07m

Ontario

Thu 11/6

12:40-17:55

2 stops21h 15m

£406

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 1/3

06:00-16:02

2 stops18h 02m

Ontario

Thu 5/3

07:30-07:45

2 stops16h 15m

£635

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 12/5

14:15-22:32

2 stops16h 17m

£486

Flights are sorted by cheapest return flights first.

Deals found on 14/2

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, February is the cheapest month in which you can book a flight from Dublin to Ontario (average of £337). Flying from Dublin to Ontario in July is currently the most expensive (average of £513). 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 £388, KLM can have you in Ontario from Dublin in 30h 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.

  • 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 £337). Flying from Dublin to Ontario in July is currently the most expensive (average of £513). 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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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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