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Cheap flights from Dublin to Ontario from £278

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
16 Aug — 23 Aug1
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 17 July 2026.

Wed 26/808:35
DUB
-
ONT
2 stops32h 59m
British Airways
Fri 11/914:22
ONT
-
DUB
2 stops21h 03m
British Airways
Deal found 14/7£512
Thu 29/1013:00
DUB
-
ONT
1 stop15h 11m
Iberia
Tue 3/1106:10
ONT
-
DUB
1 stop17h 05m
Iberia
Deal found 14/7£517
Wed 26/812:40
DUB
-
ONT
1 stop14h 07m
American Airlines
Sat 12/910:25
ONT
-
DUB
1 stop15h 20m
American Airlines
Deal found 14/7£521
Wed 21/1012:40
DUB
-
ONT
1 stop16h 31m
Iberia
Wed 28/1010:25
ONT
-
DUB
1 stop13h 50m
Iberia
Deal found 17/7£524
Sat 29/812:40
DUB
-
ONT
1 stop14h 18m
Iberia
Sat 12/914:22
ONT
-
DUB
2 stops34h 43m
Iberia
Deal found 14/7£529
Sat 29/813:45
DUB
-
ONT
2 stops17h 14m
American Airlines
Sat 12/906:00
ONT
-
DUB
2 stops16h 30m
American Airlines
Deal found 14/7£531
Thu 27/811:10
DUB
-
ONT
2 stops19h 49m
British Airways
Mon 31/816:07
ONT
-
DUB
2 stops18h 33m
British Airways
Deal found 13/7£576
Thu 29/1009:40
DUB
-
ONT
1 stop17h 38m
KLM
Thu 5/1107:05
ONT
-
DUB
1 stop16h 40m
KLM
Deal found 13/7£609
Fri 28/805:55
DUB
-
ONT
2 stops23h 57m
Delta
Fri 4/922:00
ONT
-
DUB
2 stops25h 55m
Delta
Deal found 14/7£625
Sun 30/806:00
DUB
-
ONT
2 stops25h 34m
Delta
Sun 6/906:20
ONT
-
DUB
2 stops25h 05m
Delta
Deal found 15/7£634
Fri 28/809:20
DUB
-
ONT
2 stops18h 41m
United Airlines
Fri 4/905:00
ONT
-
DUB
2 stops18h 30m
United Airlines
Deal found 13/7£635
Sun 30/811:35
DUB
-
ONT
2 stops17h 18m
United Airlines
Mon 14/905:00
ONT
-
DUB
2 stops18h 30m
United Airlines
Deal found 14/7£637

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 17 July 2026.

Round-trip from

£512

One-way from

£278

Popular in

July

Cheapest in

January

Average price

£743
British Airways
  • British Airways
  • 27/8-15/9
  • 4 total stops
  • 55h 47m total
  • Dublin to Ontario
Search Deals
JetBlue
  • JetBlue
  • 26/8
  • 1 total stop
  • 19h 07m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£96 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 July 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 17 July 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

Sun 30/8

06:00-23:34

2 stops25h 34m

Ontario

Sun 6/9

06:20-15:25

2 stops25h 05m

£634

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 28/8

11:35-22:35

1 stop19h 00m

Ontario

Fri 4/9

05:00-07:30

2 stops18h 30m

£638
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 19/11

11:30-22:54

2 stops19h 24m

Ontario

Thu 10/12

10:03-10:15

2 stops16h 12m

£710

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 28/7

11:00-21:50

1 stop18h 50m

Ontario

Sat 1/8

17:10-07:55

2 stops30h 45m

£718

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 5/10

05:55-23:45

2 stops25h 50m

Ontario

Sat 10/10

23:05-09:35

2 stops26h 30m

£874

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 28/7

05:35-23:11

2 stops25h 36m

Ontario

Mon 10/8

23:59-23:05

2 stops39h 06m

£1,204

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 21/10

12:15-23:53

2 stops19h 38m

Ontario

Wed 28/10

11:13-10:15

2 stops16h 02m

£1,274

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 28/8

05:35-21:59

2 stops48h 24m

Ontario

Thu 10/9

21:10-09:35

2 stops28h 25m

£1,329

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 3/9

14:15-23:24

2 stops17h 09m

Ontario

Wed 16/9

10:47-13:15

2 stops18h 28m

£1,383

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 1/8

05:35-23:11

2 stops25h 36m

Ontario

Fri 14/8

23:59-16:00

2 stops56h 01m

£1,445

Flights are sorted by cheapest return flights first.

Deals found on 12/7

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 £638, Delta can have you in Ontario from Dublin in 19h. 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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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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