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Cheap flights from Dublin to Ontario from £280

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 16/7. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
9 Jun — 16 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 10 May 2026.

Wed 16/912:40
DUB
-
ONT
1 stop14h 17m
Iberia
Fri 25/912:35
ONT
-
DUB
1 stop13h 10m
Iberia
Deal found 9/5£456
Mon 22/611:45
DUB
-
ONT
1 stop18h 51m
American Airlines
Mon 29/607:00
ONT
-
DUB
1 stop18h 45m
American Airlines
Deal found 8/5£463
Fri 20/1109:45
DUB
-
ONT
1 stop16h 33m
KLM
Sat 28/1107:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 9/5£596
Thu 12/1105:55
DUB
-
ONT
2 stops18h 17m
Delta
Sat 14/1117:05
ONT
-
DUB
2 stops30h 50m
Delta
Deal found 7/5£604
Mon 14/912:40
DUB
-
ONT
1 stop14h 17m
Iberia
Wed 23/912:35
ONT
-
DUB
1 stop13h 10m
Iberia
Deal found 9/5£619
Thu 14/508:55
DUB
-
ONT
2 stops21h 39m
Delta
Thu 28/506:00
ONT
-
DUB
2 stops19h 15m
Delta
Deal found 5/5£632
Tue 26/505:55
DUB
-
ONT
2 stops25h 39m
Delta
Sat 30/522:00
ONT
-
DUB
2 stops25h 55m
Delta
Deal found 9/5£634
Thu 21/509:20
DUB
-
ONT
2 stops21h 31m
United Airlines
Mon 25/505:00
ONT
-
DUB
2 stops18h 30m
United Airlines
Deal found 9/5£637
Wed 21/1011:00
DUB
-
ONT
1 stop15h 18m
KLM
Wed 28/1012:00
ONT
-
DUB
1 stop12h 45m
KLM
Deal found 5/5£640
Mon 17/811:30
DUB
-
ONT
1 stop19h 05m
JetBlue
Tue 25/823:50
ONT
-
DUB
1 stop25h 10m
JetBlue
Deal found 7/5£648

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 May 2026.

Round-trip from

£456

One-way from

£280

Popular in

July

Cheapest in

January

Average price

£520
Iberia
  • Iberia
  • 23/9-7/10
  • 2 total stops
  • 29h 37m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 16/7
  • 1 total stop
  • 19h 05m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£12 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 10 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

Thu 21/5

09:20-22:51

2 stops21h 31m

Ontario

Mon 25/5

05:00-07:30

2 stops18h 30m

£637

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 9/7

09:50-22:51

2 stops45h 01m

Ontario

Tue 28/7

05:00-07:20

2 stops18h 20m

£719

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 2/7

09:20-22:51

2 stops21h 31m

Ontario

Sun 5/7

05:00-07:30

2 stops18h 30m

£725

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 1/7

11:00-10:40

1 stop31h 40m

Ontario

Sun 5/7

22:00-09:15

2 stops27h 15m

£745
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 29/6

11:00-18:30

1 stop15h 30m

Ontario

Sat 4/7

11:50-08:45

1 stop12h 55m

£862

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 22/6

09:30-20:46

2 stops19h 16m

Ontario

Mon 29/6

06:10-09:45

1 stop19h 35m

£876

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 17/8

14:15-22:10

2 stops15h 55m

Ontario

Tue 25/8

15:05-13:15

2 stops38h 10m

£1,044

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 29/5

12:15-23:56

2 stops19h 41m

Ontario

Sat 6/6

16:03-13:15

2 stops37h 12m

£1,193

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 14/7

14:15-23:11

2 stops16h 56m

Ontario

Tue 18/8

14:05-13:15

2 stops39h 10m

£1,330

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 14/9

05:55-23:24

2 stops25h 29m

Ontario

Wed 23/9

21:10-09:35

2 stops28h 25m

£1,364

Flights are sorted by cheapest return flights first.

Deals found on 6/5

Showing 1-10 of 24 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 £640, United Airlines can have you in Ontario from Dublin in 15h 18m. 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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