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Ontario

$506+ Cheap flights from Ireland to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
1 adult, Economy
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Cheap flight deals from Ireland to Ontario

Keep the following information in mind while searching for Ireland to Ontario flight deals. Data was last updated enero 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$507
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$586
Provider with most accurate pricing for Dublin-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Dublin-Los Angeles flights.
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From Ireland to Ontario
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Highest demand for flights based on searches. 16% potential increase in price ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Ireland to Ontario

Cheapest flights from Ireland to Ontario
Explore the most affordable flight options available from Ireland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 15, 2026.

This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/2211:30 am
DUB
-
ONT
2 stops43h 18m
American Airlines
dom. 1/2510:58 am
ONT
-
DUB
2 stops13h 42m
American Airlines
Deal found 1/14$506
This Iberia deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2212:40 pm
DUB
-
ONT
1 stop17h 11m
Iberia
jue. 11/510:47 am
ONT
-
DUB
1 stop12h 28m
Iberia
Deal found 1/13$521
This Iberia deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/2412:40 pm
DUB
-
ONT
1 stop17h 10m
Iberia
vie. 10/912:48 pm
ONT
-
DUB
1 stop12h 57m
Iberia
Deal found 1/14$543
This American Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/111:45 am
DUB
-
ONT
1 stop17h 43m
American Airlines
sáb. 9/510:29 pm
ONT
-
DUB
1 stop27h 06m
American Airlines
Deal found 1/15$557
This British Airways deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/411:50 am
ORK
-
ONT
2 stops18h 33m
British Airways
dom. 11/87:00 am
ONT
-
ORK
2 stops32h 25m
British Airways
Deal found 1/14$654
This TravelUp deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/17:40 am
ORK
-
ONT
2 stops22h 27m
British Airways
dom. 3/82:39 pm
ONT
-
ORK
2 stops17h 46m
British Airways
Deal found 1/15$688
This United Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/2010:40 am
DUB
-
ONT
2 stops18h 18m
United Airlines
mar. 1/278:00 am
ONT
-
DUB
2 stops16h 10m
United Airlines
Deal found 1/13$700
This Air Canada deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/249:00 am
DUB
-
ONT
2 stops19h 58m
Air Canada
mar. 1/275:05 am
ONT
-
DUB
2 stops18h 05m
Air Canada
Deal found 1/14$704
This Air Canada deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/249:00 am
DUB
-
ONT
2 stops19h 58m
Air Canada
dom. 1/255:05 am
ONT
-
DUB
2 stops18h 05m
Air Canada
Deal found 1/14$705
This Iberia deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/149:30 am
DUB
-
ONT
1 stop19h 24m
Iberia
lun. 4/2010:59 am
ONT
-
DUB
1 stop14h 46m
Iberia
Deal found 1/15$740
This United Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/269:20 am
DUB
-
ONT
2 stops21h 06m
United Airlines
dom. 8/307:00 am
ONT
-
DUB
1 stop18h 45m
United Airlines
Deal found 1/15$757
This American Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/197:40 am
ORK
-
ONT
2 stops20h 44m
American Airlines
lun. 3/236:00 am
ONT
-
ORK
2 stops32h 00m
American Airlines
Deal found 1/13$758

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland 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 2,558,603 searches. Data last updated enero 15, 2026.
Use the filters below to find and compare flights from Ireland to Ontario that are best for you.

Fly from

Ireland

Fly to

Ontario

Route

Depart

Return

Price

CorkOntario

ORK - ONT

ORKONT

Cork

dom. 3/1

7:40 am-10:07 pm

2 stops22h 27m

Ontario

dom. 3/8

2:39 pm-3:25 pm

2 stops17h 46m

$688

DublinOntario

DUB - ONT

DUBONT

Dublin

mar. 4/14

9:30 am-8:54 pm

1 stop19h 24m

Ontario

lun. 4/20

10:59 am-9:45 am

1 stop14h 46m

$740

CorkOntario

ORK - ONT

ORKONT

Cork

jue. 3/19

7:40 am-9:24 pm

2 stops20h 44m

Ontario

lun. 3/23

6:00 am-9:00 pm

2 stops32h 00m

$758

DublinOntario

DUB - ONT

DUBONT

Dublin

mié. 3/11

11:30 am-11:52 pm

2 stops19h 22m

Ontario

mié. 3/25

10:33 am-10:15 am

2 stops16h 42m

$969

CorkOntario

ORK - ONT

ORKONT

Cork

mar. 3/3

11:55 am-10:49 pm

2 stops18h 54m

Ontario

mar. 3/31

3:19 pm-7:50 pm

2 stops20h 31m

$993

DublinOntario

DUB - ONT

DUBONT

Dublin

mar. 2/3

11:30 am-9:45 pm

2 stops18h 15m

Ontario

vie. 2/6

9:45 am-10:15 am

2 stops16h 30m

$1,069

DublinOntario

DUB - ONT

DUBONT

Dublin

dom. 2/1

11:30 am-10:20 pm

2 stops18h 50m

Ontario

dom. 2/8

8:55 am-10:15 am

2 stops17h 20m

$1,184

DublinOntario

DUB - ONT

DUBONT

Dublin

dom. 1/25

6:25 am-11:56 pm

2 stops25h 31m

Ontario

dom. 2/8

11:53 am-10:10 pm

2 stops26h 17m

$1,211

DublinOntario

DUB - ONT

DUBONT

Dublin

lun. 1/26

11:30 am-11:56 pm

2 stops20h 26m

Ontario

mié. 2/11

8:55 am-10:15 am

2 stops17h 20m

$1,451

DublinOntario

DUB - ONT

DUBONT

Dublin

dom. 3/15

11:30 am-10:35 pm

2 stops18h 05m

Ontario

lun. 3/23

10:33 am-10:15 am

2 stops16h 42m

$1,478

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 27 results
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Best time to book a flight from Ireland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Ireland with our price prediction graph.
Estimated round-trip 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 Ireland to Ontario

What is the cheapest month to book a flight from Ireland to Ontario?

Currently, February is the cheapest month in which you can book a flight from Ireland to Ontario (average of $436). Flying from Ireland to Ontario in July is currently the most expensive (average of $701). 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 Ireland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Ireland?

    If you book a flight to Ontario from Ireland, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ireland to Ontario?

    For as low as $740, British Airways can have you in Ontario from Ireland in 19h 24m. There are 5132 mi between Ireland and Ontario. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ireland to Ontario that include hotel bookings?

    Yes. In addition to deals on Ireland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Ontario.

  • Can I find deals for business class flights from Ireland to Ontario?

    Yes. Cheapflights offers flight deals from Ireland 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 Ireland to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Ireland to Ontario (average of $436). Flying from Ireland to Ontario in July is currently the most expensive (average of $701). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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