Find flights
When to book
FAQs

Cheap flights from Dublin to Ontario from £341

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
11 Jul — 18 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 11 June 2026.

Sun 20/1220:40
DUB
-
ONT
2 stops33h 34m
British Airways
Wed 6/107:16
ONT
-
DUB
2 stops25h 44m
British Airways
Deal found 6/6£517
Sun 14/612:40
DUB
-
ONT
1 stop17h 59m
Iberia
Sun 21/610:22
ONT
-
DUB
1 stop15h 23m
Iberia
Deal found 7/6£575
Thu 3/1209:40
DUB
-
ONT
1 stop16h 38m
KLM
Sat 12/1207:00
ONT
-
DUB
1 stop16h 45m
KLM
Deal found 9/6£604
Mon 21/1208:50
DUB
-
ONT
2 stops21h 24m
British Airways
Tue 5/114:42
ONT
-
DUB
2 stops18h 18m
British Airways
Deal found 6/6£607
Wed 8/713:45
DUB
-
ONT
2 stops16h 47m
American Airlines
Sat 18/712:35
ONT
-
DUB
1 stop13h 10m
American Airlines
Deal found 7/6£634
Fri 10/712:40
DUB
-
ONT
1 stop15h 19m
American Airlines
Sat 18/713:11
ONT
-
DUB
2 stops14h 39m
American Airlines
Deal found 6/6£637
Thu 24/1210:40
DUB
-
ONT
2 stops17h 40m
United Airlines
Thu 31/1218:53
ONT
-
DUB
3 stops28h 37m
United Airlines
Deal found 6/6£642
Mon 15/612:00
DUB
-
ONT
2 stops19h 49m
Delta
Sun 28/607:05
ONT
-
DUB
1 stop17h 40m
Delta
Deal found 6/6£645
Tue 30/612:40
DUB
-
ONT
1 stop19h 19m
Iberia
Tue 14/712:35
ONT
-
DUB
1 stop13h 10m
Iberia
Deal found 6/6£657
Sat 17/1011:00
DUB
-
ONT
1 stop15h 18m
KLM
Tue 27/1012:00
ONT
-
DUB
1 stop12h 45m
KLM
Deal found 8/6£660
Mon 15/615:25
DUB
-
ONT
1 stop15h 46m
Multiple Airlines
Mon 22/613:50
ONT
-
DUB
1 stop13h 55m
Multiple Airlines
Deal found 7/6£670
Sun 20/1210:40
DUB
-
ONT
2 stops41h 40m
United Airlines
Mon 4/105:00
ONT
-
DUB
2 stops18h 30m
United Airlines
Deal found 6/6£689

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 11 June 2026.

Round-trip from

£525

One-way from

£341

Popular in

July

Cheapest in

January

Average price

£586
KLM
  • KLM
  • 4/11-11/11
  • 2 total stops
  • 33h 18m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 11/8
  • 1 total stop
  • 19h 05m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 11 June 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 24/6

05:55-22:41

2 stops24h 46m

Ontario

Fri 7/8

22:00-10:00

2 stops28h 00m

£721

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 23/6

08:55-22:41

2 stops21h 46m

Ontario

Sat 27/6

17:59-07:55

2 stops29h 56m

£721

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 24/6

05:55-22:41

2 stops24h 46m

Ontario

Sun 28/6

06:20-10:25

2 stops20h 05m

£722

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 10/7

09:20-22:51

2 stops21h 31m

Ontario

Sun 19/7

05:00-07:30

2 stops18h 30m

£725

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 10/7

09:20-22:51

2 stops21h 31m

Ontario

Tue 21/7

06:10-07:20

2 stops17h 10m

£725

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 10/7

09:20-22:51

2 stops21h 31m

Ontario

Wed 22/7

05:00-07:30

2 stops18h 30m

£725

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 11/7

11:35-22:51

1 stop19h 16m

Ontario

Mon 20/7

06:10-09:45

1 stop19h 35m

£728

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 6/7

08:50-22:51

2 stops22h 01m

Ontario

Sun 19/7

05:00-07:30

2 stops18h 30m

£728

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 8/7

11:35-22:51

1 stop19h 16m

Ontario

Sun 19/7

06:10-09:45

1 stop19h 35m

£731

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 12/7

11:35-22:51

1 stop19h 16m

Ontario

Thu 16/7

13:50-09:45

2 stops35h 55m

£850

Flights are sorted by cheapest return flights first.

Deals found on 6/6

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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 £725, Delta can have you in Ontario from Dublin in 21h 31m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.