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Ontario

$463+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Ireland to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Ireland (IE0) 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 enero 21, 2025.

Round-trip from

$480
(Netflights)
From Ireland to Ontario
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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 21, 2025.

This Iberia deal was found by Cheapflights users on 1/21. 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. 1/3010:30 amDUB - ONT
2 stops21h 28mMultiple Airlines
mié. 2/127:00 amONT - DUB
2 stops21h 10mMultiple Airlines
Deal found 1/21$463
This Netflights deal was found by Cheapflights users on 1/21. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/110:30 amDUB - ONT
2 stops19h 57mBritish Airways
sáb. 4/126:00 amONT - DUB
2 stops21h 55mBritish Airways
Deal found 1/21$480
This Iberia deal was found by Cheapflights users on 1/21. 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. 4/112:40 pmDUB - ONT
1 stop19h 14mIberia
sáb. 4/1210:51 amONT - DUB
1 stop14h 54mIberia
Deal found 1/21$481
This American Airlines deal was found by Cheapflights users on 1/21. 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. 4/312:40 pmDUB - ONT
1 stop14h 21mAmerican Airlines
jue. 4/1712:50 pmONT - DUB
1 stop12h 55mAmerican Airlines
Deal found 1/21$482
This KLM deal was found by Cheapflights users on 1/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/66:00 amORK - ONT
2 stops24h 52mKLM
lun. 2/106:00 amONT - ORK
2 stops22h 55mKLM
Deal found 1/21$531
This United Airlines deal was found by Cheapflights users on 1/20. 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.
lun. 2/39:00 amDUB - ONT
2 stops19h 29mUnited Airlines
lun. 2/106:00 amONT - DUB
2 stops17h 00mUnited Airlines
Deal found 1/20$604
This American Airlines deal was found by Cheapflights users on 1/20. 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. 2/611:55 amORK - ONT
2 stops38h 42mAmerican Airlines
lun. 2/107:00 amONT - ORK
2 stops20h 10mAmerican Airlines
Deal found 1/20$604
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/512:00 pmDUB - ONT
1 stop32h 00mDelta
mié. 3/125:40 amONT - DUB
2 stops28h 00mDelta
Deal found 1/21$644
This Billigflug deal was found by Cheapflights users on 1/21. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/512:00 pmDUB - ONT
1 stop18h 52mAir France
mié. 3/1212:46 pmONT - DUB
1 stop13h 59mAir France
Deal found 1/21$769
This TravelUp deal was found by Cheapflights users on 1/20. 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.
jue. 6/2611:00 amDUB - ONT
1 stop19h 29mKLM
sáb. 7/510:59 pmONT - DUB
1 stop25h 46mKLM
Deal found 1/20$926
This Air Canada deal was found by Cheapflights users on 1/21. 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.
jue. 2/67:40 amORK - ONT
3 stops21h 11mAir Canada
lun. 2/105:10 amONT - ORK
3 stops22h 00mAir Canada
Deal found 1/21$1,037
This Air Canada deal was found by Cheapflights users on 1/21. 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.
jue. 1/3010:00 amDUB - ONT
3 stops34h 41mAir Canada
mié. 2/125:10 amONT - DUB
3 stops21h 05mAir Canada
Deal found 1/21$1,221

Find flights from Ireland to Ontario within your budget

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 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

mar. 4/1

10:30 am-10:27 pm

2 stops19h 57m

Ontario

sáb. 4/12

6:00 am-11:55 am

2 stops21h 55m

$480

DublinOntario

DUB - ONT

DUBONT

Dublin

mar. 4/1

12:40 pm-11:54 pm

1 stop19h 14m

Ontario

sáb. 4/12

10:51 am-9:45 am

1 stop14h 54m

$481

DublinOntario

DUB - ONT

DUBONT

Dublin

jue. 4/3

12:40 pm-7:01 pm

1 stop14h 21m

Ontario

jue. 4/17

12:50 pm-9:45 am

1 stop12h 55m

$482

CorkOntario

ORK - ONT

ORKONT

Cork

jue. 2/6

6:00 am-10:52 pm

2 stops24h 52m

Ontario

lun. 2/10

6:00 am-12:55 pm

2 stops22h 55m

$531

DublinOntario

DUB - ONT

DUBONT

Dublin

lun. 2/3

9:00 am-8:29 pm

2 stops19h 29m

Ontario

lun. 2/10

6:00 am-7:00 am

2 stops17h 00m

$604

CorkOntario

ORK - ONT

ORKONT

Cork

jue. 2/6

11:55 am-6:37 pm

2 stops38h 42m

Ontario

lun. 2/10

7:00 am-11:10 am

2 stops20h 10m

$604

DublinOntario

DUB - ONT

DUBONT

Dublin

mié. 3/5

12:00 pm-12:00 pm

1 stop32h 00m

Ontario

mié. 3/12

5:40 am-4:40 pm

2 stops28h 00m

$644

DublinOntario

DUB - ONT

DUBONT

Dublin

vie. 3/7

5:00 am-10:45 pm

2 stops25h 45m

Ontario

vie. 3/14

6:00 am-10:50 pm

2 stops33h 50m

$740

DublinOntario

DUB - ONT

DUBONT

Dublin

mié. 3/5

12:00 pm-10:52 pm

1 stop18h 52m

Ontario

mié. 3/12

12:46 pm-9:45 am

1 stop13h 59m

$769

DublinOntario

DUB - ONT

DUBONT

Dublin

jue. 6/26

11:00 am-10:29 pm

1 stop19h 29m

Ontario

sáb. 7/5

10:59 pm-8:45 am

1 stop25h 46m

$926

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 18 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.

Travel insights for flights from Ireland to Ontario

Get recent, data-driven insights about flights from Ireland to Ontario including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Ireland to Ontario (average of $246). Flying from Ireland to Ontario in March is currently the most expensive (average of $310). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated enero 21, 2025.
See what other customers who have flown with British Airways, American Airlines and KLM from Ireland to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from Ireland to Ontario one-way?

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $521. Delta flights start at $643 while deals on KLM start at $648 one-way.

  • 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, August is the cheapest month in which you can book a flight from Ireland to Ontario (average of $246). Flying from Ireland to Ontario in March is currently the most expensive (average of $310). 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

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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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