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Cheap flights from Dublin to Ontario from £338

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
28 Jun — 5 Jul1
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 29 May 2026.

Wed 17/611:30
DUB
-
ONT
1 stop19h 13m
JetBlue
Sun 21/623:56
ONT
-
DUB
1 stop25h 04m
JetBlue
Deal found 25/5£578
Thu 11/606:30
DUB
-
ONT
2 stops19h 51m
British Airways
Mon 15/614:18
ONT
-
DUB
2 stops17h 27m
British Airways
Deal found 27/5£580
Tue 1/1209:40
DUB
-
ONT
1 stop16h 38m
Delta
Sat 5/1212:00
ONT
-
DUB
2 stops36h 45m
Delta
Deal found 27/5£617
Tue 20/1005:55
DUB
-
ONT
2 stops18h 17m
Delta
Wed 28/1007:00
ONT
-
DUB
1 stop17h 45m
Delta
Deal found 28/5£639
Wed 14/1009:20
DUB
-
ONT
2 stops35h 21m
United Airlines
Sun 18/1007:00
ONT
-
DUB
1 stop18h 45m
United Airlines
Deal found 24/5£642
Fri 9/1011:00
DUB
-
ONT
1 stop15h 18m
Multiple Airlines
Wed 14/1012:00
ONT
-
DUB
1 stop12h 45m
Multiple Airlines
Deal found 25/5£645
Wed 17/612:40
DUB
-
ONT
1 stop17h 59m
Iberia
Sun 21/610:22
ONT
-
DUB
1 stop15h 23m
Iberia
Deal found 25/5£660

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 29 May 2026.

Round-trip from

£578

One-way from

£338

Popular in

July

Cheapest in

January

Average price

£531
JetBlue
  • JetBlue
  • 17/6-21/6
  • 2 total stops
  • 44h 17m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 17/6
  • 1 total stop
  • 19h 13m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£82 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 29 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

Wed 21/10

05:55-16:12

2 stops18h 17m

Ontario

Thu 29/10

07:00-08:45

2 stops18h 45m

£639

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

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 21/10

11:00-18:18

1 stop15h 18m

Ontario

Thu 29/10

07:00-07:45

1 stop17h 45m

£646
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 12/10

11:00-18:18

1 stop15h 18m

Ontario

Mon 19/10

12:00-08:45

1 stop12h 45m

£646

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 17/6

12:40-19:56

1 stop15h 16m

Ontario

Sun 21/6

07:00-09:45

1 stop18h 45m

£663

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 9/7

11:00-18:30

1 stop15h 30m

Ontario

Sun 26/7

11:48-08:45

1 stop12h 57m

£732

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 1/8

11:00-10:38

1 stop31h 38m

Ontario

Sun 9/8

07:05-08:45

1 stop17h 40m

£785

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 22/7

11:00-18:30

1 stop15h 30m

Ontario

Sun 2/8

11:48-08:45

1 stop12h 57m

£799

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 23/6

11:35-22:37

2 stops19h 02m

Ontario

Tue 30/6

06:10-08:15

2 stops42h 05m

£801
Cheapest one-way

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 9/7

11:30-22:44

1 stop19h 14m

£412

Flights are sorted by cheapest return flights first.

Deals found on 25/5

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 £639, British Airways can have you in Ontario from Dublin in 18h 17m. 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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