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Ontario

$517+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ONT
Dec 26 — Jan 21
Thu 12/26
Thu 1/2
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 December 21, 2024.

Round-trip from

$517
(American Airlines)
From Ireland to Ontario
Search Deals

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 December 21, 2024.

This United Airlines deal was found by Cheapflights users on 12/20. 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 12/239:00 amDUB - ONT
2 stops22h 00mUnited Airlines
Thu 1/236:00 amONT - DUB
2 stops17h 00mUnited Airlines
Deal found 12/20$1,293
This KLM deal was found by Cheapflights users on 12/19. 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.
Thu 12/2611:30 amDUB - ONT
1 stop16h 11mKLM
Thu 1/26:52 amONT - DUB
1 stop17h 33mKLM
Deal found 12/19$1,883
This Icelandair deal was found by Cheapflights users on 12/19. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2611:30 amDUB - ONT
2 stops20h 29mMultiple Airlines
Thu 1/210:40 amONT - DUB
2 stops15h 35mMultiple Airlines
Deal found 12/19$2,809

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 December 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 2/3

2:05 pm-1:51 pm

2 stops31h 46m

Ontario

Mon 2/10

10:56 am-12:35 pm

2 stops17h 39m

$517

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/24

12:40 pm-10:11 pm

1 stop17h 31m

Ontario

Mon 4/28

7:00 am-9:45 am

1 stop18h 45m

$584

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 2/19

9:00 am-8:52 pm

2 stops19h 52m

Ontario

Fri 2/28

6:00 am-10:05 am

3 stops20h 05m

$592

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 3/1

7:40 am-6:35 pm

2 stops18h 55m

Ontario

Mon 3/10

6:00 am-9:10 am

2 stops20h 10m

$676

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 1/13

9:00 am-11:23 pm

2 stops22h 23m

Ontario

Sun 1/26

6:45 am-4:40 pm

2 stops25h 55m

$745

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 3/1

12:00 pm-10:52 pm

1 stop18h 52m

Ontario

Mon 3/10

7:00 am-9:45 am

1 stop19h 45m

$772

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 1/6

11:50 am-10:29 pm

2 stops18h 39m

Ontario

Fri 1/10

6:38 pm-7:10 am

2 stops28h 32m

$1,397

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 2/24

12:00 pm-10:52 pm

1 stop18h 52m

$617

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 5/30

11:00 am-10:41 pm

1 stop19h 41m

$663

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 1/31

10:55 am-10:45 pm

2 stops19h 50m

$731

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 15 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 $317). 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 December 21, 2024.
See what other customers who have flown with KLM and United Airlines 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
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

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
8,597 reviews
Delta
8.0
Very good
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

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
1,344 reviews
Delta
8.0
Very good
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

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
9,035 reviews
Delta
8.0
Very good
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

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
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 10

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

Air Canada
7.0
Good
8,403 reviews
Delta
8.0
Very good
8,597 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.3

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 KLM, which is currently one of the cheapest options available, starting at $617. Delta flights start at $663 while deals on Iberia start at $731 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 $317). 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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