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$361+ Cheap flights from Ontario (ONT) to Ireland

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Ontario to Ireland

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

Round-trip from

$520
(KLM)

One-way from

$361
(Kiwi.com)
From Ontario to Ireland
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One-way flight from Ontario to Ireland
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Find flight deals from Ontario to Ireland

Cheapest flights from Ontario to Ireland
Explore the most affordable flight options available from Ontario to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/247:05 amONT - DUB
1 stop18h 40mKLM
Wed 3/512:00 pmDUB - ONT
1 stop18h 52mKLM
Deal found 1/20$520
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.
Mon 2/246:00 amONT - DUB
2 stops17h 00mUnited Airlines
Wed 3/59:00 amDUB - ONT
2 stops19h 52mUnited Airlines
Deal found 1/20$551
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/17:00 amONT - DUB
1 stop18h 45mIberia
Mon 4/712:40 pmDUB - ONT
1 stop19h 11mIberia
Deal found 1/20$574
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.
Sun 3/210:51 amONT - SNN
2 stops21h 54mAmerican Airlines
Wed 4/27:40 amSNN - ONT
2 stops24h 14mAmerican Airlines
Deal found 1/20$579
This Air Canada deal was found by Cheapflights users on 1/19. 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.
Wed 4/235:00 amONT - DUB
2 stops19h 15mMultiple Airlines
Wed 5/79:20 amDUB - ONT
2 stops19h 14mMultiple Airlines
Deal found 1/19$615
This Delta deal was found by Cheapflights users on 1/19. 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.
Sat 4/2612:39 pmONT - DUB
1 stop36h 06mDelta
Thu 5/811:00 amDUB - ONT
1 stop16h 42mDelta
Deal found 1/19$625
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.
Sun 4/206:00 amONT - DUB
1 stop19h 45mAmerican Airlines
Fri 5/27:30 amDUB - ONT
2 stops18h 50mAmerican Airlines
Deal found 1/21$631
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:45 amONT - DUB
3 stops18h 00mAir Canada
Sat 9/69:20 amDUB - ONT
3 stops35h 13mAir Canada
Deal found 1/20$732
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/25:05 amONT - SNN
3 stops22h 25mAir Canada
Wed 4/29:15 pmSNN - ONT
3 stops31h 27mAir Canada
Deal found 1/20$792
This British Airways deal was found by Cheapflights users on 1/19. 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.
Tue 4/2210:51 amONT - DUB
2 stops16h 24mBritish Airways
Mon 5/57:00 pmDUB - ONT
2 stops30h 42mBritish Airways
Deal found 1/19$858
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/33:00 pmONT - SNN
2 stops17h 10mBritish Airways
Mon 9/87:40 amSNN - ONT
2 stops22h 00mBritish Airways
Deal found 1/21$1,162

Find flights from Ontario to Ireland within your budget

Customize your flight search to find flights from Ontario to Ireland 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 2/24

7:05 am-9:45 am

1 stop18h 40m

Dublin

Wed 3/5

12:00 pm-10:52 pm

1 stop18h 52m

$520

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 2/24

6:00 am-7:00 am

2 stops17h 00m

Dublin

Wed 3/5

9:00 am-8:52 pm

2 stops19h 52m

$551

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 4/1

7:00 am-9:45 am

1 stop18h 45m

Dublin

Mon 4/7

12:40 pm-11:51 pm

1 stop19h 11m

$574

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 3/2

10:51 am-4:45 pm

2 stops21h 54m

Shannon

Wed 4/2

7:40 am-11:54 pm

2 stops24h 14m

$579

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 4/23

5:00 am-8:15 am

2 stops19h 15m

Dublin

Wed 5/7

9:20 am-8:34 pm

2 stops19h 14m

$615

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 4/26

10:59 pm-8:45 am

1 stop25h 46m

Dublin

Tue 5/6

11:00 am-7:42 pm

1 stop16h 42m

$625

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 4/20

6:00 am-9:45 am

1 stop19h 45m

Dublin

Fri 5/2

7:30 am-6:20 pm

2 stops18h 50m

$631

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 3/2

5:05 am-11:30 am

3 stops22h 25m

Shannon

Wed 4/2

9:15 pm-8:42 pm

3 stops31h 27m

$792

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 7/10

1:00 pm-7:45 am

2 stops34h 45m

Dublin

Thu 7/24

9:20 am-10:53 pm

2 stops45h 33m

$857

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 4/22

10:51 am-11:15 am

2 stops16h 24m

Dublin

Mon 5/5

7:00 pm-5:42 pm

2 stops30h 42m

$858

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 22 results
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Best time to book a flight from Ontario to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Ontario 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 Ontario to Ireland

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Ireland (average of $509). Flying from Ontario to Ireland in June is currently the most expensive (average of $1,016). 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.

What is the cheapest time of day to fly from ONT to IE?

Find hourly flight availability from Ontario to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Ireland as you normally would.

Rainfall in Ireland by month

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

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

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

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated January 21, 2025.
See what other customers who have flown with American Airlines, United Airlines and Air Canada from Ontario to Ireland 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

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada
7.0
Good
8,633 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Ireland. 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 from for flights from Ontario to Ireland?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ireland from Ontario.

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

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $420. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Ontario to Ireland for a low price.

  • What are the most popular routes from Ontario to Ireland?

    When deciding which route to take from Ontario to Ireland consider Ontario - Dublin, Ontario - Shannon or Ontario - Cork as they are the most popular.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Ontario to Ireland (average of $509). Flying from Ontario to Ireland in June is currently the most expensive (average of $1,016). 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.

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Alternative routes for Ontario to Ireland

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Top 5 airlines flying from Ontario to Ireland

Discover the top 5 airlines that operate flights from Ontario to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$507Average$572FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$557Average$1,030FlexibilityNo cancel feeOn-time71%
IberiaCheapest$580Average$808FlexibilityNo cancel feeOn-time77%
KLMCheapest$607Average$893FlexibilityNo cancel feeOn-time75%
DeltaCheapest$807Average$922FlexibilityNo cancel feeOn-timeN/A
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