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Cheap flights from Dublin to Ontario from £337

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
3 Feb — 10 Feb1
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 4 January 2026.

Sat 21/215:10DUB - ONT
2 stops38h 57mBritish Airways
Sun 1/314:39ONT - DUB
2 stops21h 01mBritish Airways
Deal found 2/1£337
Mon 12/111:30DUB - ONT
2 stops34h 48mAmerican Airlines
Sat 24/110:58ONT - DUB
2 stops13h 42mAmerican Airlines
Deal found 4/1£379
Tue 20/105:55DUB - ONT
2 stops23h 10mDelta
Sat 24/122:30ONT - DUB
2 stops33h 15mDelta
Deal found 2/1£451
Thu 19/207:35DUB - ONT
2 stops19h 07mBritish Airways
Sun 1/314:39ONT - DUB
2 stops17h 01mBritish Airways
Deal found 2/1£454
Fri 20/219:45DUB - ONT
2 stops28h 34mBritish Airways
Mon 2/314:39ONT - DUB
2 stops18h 26mBritish Airways
Deal found 2/1£455
Sat 17/112:30DUB - ONT
1 stop18h 23mMultiple Airlines
Wed 21/106:00ONT - DUB
1 stop21h 25mMultiple Airlines
Deal found 2/1£497
Mon 16/210:40DUB - ONT
2 stops31h 18mUnited Airlines
Thu 26/206:10ONT - DUB
2 stops19h 45mUnited Airlines
Deal found 2/1£523
Thu 19/210:45DUB - ONT
2 stops18h 20mDelta
Tue 3/322:20ONT - DUB
1 stop25h 25mDelta
Deal found 2/1£540
Sun 11/110:40DUB - ONT
2 stops34h 07mUnited Airlines
Thu 22/113:53ONT - DUB
2 stops34h 17mUnited Airlines
Deal found 4/1£591
Fri 9/106:00DUB - ONT
2 stops18h 12mDelta
Fri 23/112:41ONT - DUB
2 stops19h 04mDelta
Deal found 4/1£594
Sat 10/116:05DUB - ONT
2 stops33h 17mAmerican Airlines
Sun 25/116:45ONT - DUB
2 stops16h 05mAmerican Airlines
Deal found 4/1£648
Sat 10/110:40DUB - ONT
3 stops32h 38mUnited Airlines
Sat 24/106:00ONT - DUB
2 stops17h 30mUnited Airlines
Deal found 4/1£667

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 4 January 2026.

Round-trip from

£337

Popular in

July

Cheapest in

February

Average price

£436
British Airways
  • British Airways
  • 21/2-27/2
  • 4 total stops
  • 64h 49m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£74 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 January 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 4 January 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

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Fri 27/2

23:58-09:50

2 stops25h 52m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Mon 2/3

14:39-19:40

2 stops21h 01m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 22/2

10:45-22:07

2 stops19h 22m

Ontario

Sun 1/3

10:56-19:40

2 stops24h 44m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Sat 28/2

17:02-18:40

2 stops17h 38m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 22/2

10:45-22:07

2 stops19h 22m

Ontario

Fri 27/2

23:58-09:50

2 stops25h 52m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 20/1

05:55-21:05

2 stops23h 10m

Ontario

Sat 24/1

22:30-15:45

2 stops33h 15m

£451

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

12:05-22:49

2 stops18h 44m

Ontario

Tue 3/3

14:39-15:40

2 stops17h 01m

£455

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 17/2

19:45-16:19

2 stops28h 34m

Ontario

Wed 4/3

14:39-15:40

2 stops17h 01m

£455

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 20/2

19:45-16:19

2 stops28h 34m

Ontario

Sun 1/3

14:39-15:40

2 stops17h 01m

£455

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 16/2

06:40-22:49

2 stops24h 09m

Ontario

Wed 4/3

14:39-15:40

2 stops17h 01m

£455

Flights are sorted by cheapest return flights first.

Deals found on 4/1

Showing 1-10 of 23 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 £324). Flying from Dublin to Ontario in July is currently the most expensive (average of £521). 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 £337, British Airways can have you in Ontario from Dublin in 38h 57m. 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 £324). Flying from Dublin to Ontario in July is currently the most expensive (average of £521). 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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