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$269+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
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 November 20, 2024.

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 November 20, 2024.

This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:00 amONT - DUB
2 stops20h 05mUnited Airlines
Sun 12/811:50 amDUB - ONT
2 stops20h 08mUnited Airlines
Deal found 11/19$507
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 12/106:00 amONT - DUB
2 stops18h 25mDelta
Mon 1/1310:45 amDUB - ONT
2 stops21h 08mDelta
Deal found 11/19$592
This Justfly.com deal was found by Cheapflights users on 11/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/66:00 amONT - DUB
2 stops17h 10mAir Canada
Sat 3/19:00 amDUB - ONT
2 stops17h 31mAir Canada
Deal found 11/19$604
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Sat 12/285:05 amONT - DUB
2 stops18h 05mMultiple Airlines
Fri 1/109:00 amDUB - ONT
3 stops32h 51mMultiple Airlines
Deal found 11/19$614
This KLM deal was found by Cheapflights users on 11/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:10 amONT - DUB
1 stop17h 15mKLM
Thu 12/2611:30 amDUB - ONT
1 stop16h 11mKLM
Deal found 11/19$928
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2712:36 pmONT - DUB
2 stops37h 14mBritish Airways
Tue 1/78:30 pmDUB - ONT
2 stops49h 21mBritish Airways
Deal found 11/19$978
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2110:02 amONT - DUB
2 stops19h 08mAmerican Airlines
Sat 12/2811:30 amDUB - ONT
2 stops20h 27mAmerican Airlines
Deal found 11/19$1,287
This KAYAK deal was found by Cheapflights users on 11/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2512:45 pmONT - ORK
2 stops24h 15mBritish Airways
Mon 1/64:05 pmORK - ONT
2 stops34h 32mBritish Airways
Deal found 11/19$1,305
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:00 amONT - ORK
2 stops30h 00mMultiple Airlines
Mon 1/137:40 amORK - ONT
2 stops22h 52mMultiple Airlines
Deal found 11/19$1,307
This KAYAK deal was found by Cheapflights users on 11/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/207:15 amONT - DUB
2 stops30h 50mIberia
Wed 11/277:25 amDUB - ONT
2 stops24h 32mIberia
Deal found 11/18$1,360
This British Airways deal was found by Cheapflights users on 11/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/212:53 pmONT - SNN
2 stops17h 52mBritish Airways
Sun 11/247:45 amSNN - ONT
2 stops22h 29mBritish Airways
Deal found 11/20$1,498
This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/211:57 pmONT - DUB
1 stop13h 28mAer Lingus
Sat 12/2812:30 pmDUB - ONT
1 stop18h 30mAer Lingus
Deal found 11/20$2,872

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/25

6:00 am-10:05 am

3 stops21h 05m

Dublin

Tue 4/1

9:50 am-3:46 pm

2 stops37h 56m

$481

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/22

6:00 am-6:10 am

2 stops41h 10m

Dublin

Tue 4/1

9:50 am-12:33 pm

2 stops34h 43m

$482

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/25

11:02 am-10:15 am

2 stops16h 13m

Dublin

Tue 4/1

12:40 pm-8:16 pm

1 stop15h 36m

$500

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/22

1:31 am-3:05 pm

2 stops30h 34m

Dublin

Tue 4/1

10:50 am-9:42 pm

2 stops18h 52m

$544

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/24

7:00 am-8:45 am

2 stops18h 45m

Dublin

Tue 4/1

11:00 am-10:58 pm

1 stop19h 58m

$584

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 12/10

7:10 am-8:25 am

1 stop17h 15m

Dublin

Mon 1/13

10:45 am-10:52 pm

2 stops20h 07m

$592

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/1

6:00 am-7:10 am

2 stops17h 10m

Dublin

Sat 3/8

9:00 am-6:04 pm

2 stops17h 04m

$599

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/25

12:39 pm-9:45 am

1 stop14h 06m

Dublin

Tue 4/1

11:00 am-10:58 pm

1 stop19h 58m

$717

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 4/30

10:58 am-9:45 am

1 stop14h 47m

Dublin

Wed 5/7

12:40 pm-11:35 pm

1 stop18h 55m

$773

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 2/7

10:56 am-11:30 am

2 stops16h 34m

Shannon

Sun 2/16

7:45 am-10:05 pm

2 stops22h 20m

$817

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 29 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 $498). Flying from Ontario to Ireland in June is currently the most expensive (average of $944). 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 November 20, 2024.

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 November 20, 2024.
See what other customers who have flown with United Airlines, American Airlines and British Airways 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
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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

Air France
7.4
Good
1,523 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
9,171 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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 United Airlines, with whom users have recently found tickets for as low as $410. However, be on the lookout for offers from British Airways and American 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 - Cork or Ontario - Shannon 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 $498). Flying from Ontario to Ireland in June is currently the most expensive (average of $944). 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 Ontario to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Ireland

Discover the top 6 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$505Average$922FlexibilityNo cancel feeOn-time75%
DeltaCheapest$505Average$897FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$507Average$572FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$532Average$872FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$557Average$952FlexibilityNo cancel feeOn-time71%
IberiaCheapest$580Average$808FlexibilityNo cancel feeOn-time77%
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