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Cheap flights from Ontario to Ireland from C$ 259

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DUB
7 Jul — 14 Jul1
1 adult

Cheap flight deals from Ontario to Ireland

Keep the following information in mind while searching for Ontario to Ireland flight deals. Data was last updated 2 July 2025.

Round-trip from

C$ 526

One-way from

C$ 318

Popular in

December

Cheapest in

November

Average price

C$ 808

Good round-trip deal

C$ 608 or less

Good one-way deal

C$ 364 or less
Porter Airlines
  • Porter Airlines
  • 7/7-14/8
  • Nonstop
  • 14h 10m total
  • Ontario to Ireland
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 1/9
  • 1 total stop
  • 14h 05m total
  • Ontario to Ireland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Ireland.
Search Deals
Price to beat on a 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 2 July 2025.

Mon 7/711:55 p.m.YYZ - DUB
Nonstop6h 35mPorter Airlines
Thu 14/81:15 p.m.DUB - YYZ
Nonstop7h 35mPorter Airlines
Deal found 30/6C$ 526
Tue 7/1011:55 p.m.YYZ - DUB
Nonstop6h 35mAir Transat
Sun 12/101:15 p.m.DUB - YYZ
Nonstop7h 35mAir Transat
Deal found 2/7C$ 529
Fri 3/1010:10 p.m.YYZ - DUB
Nonstop6h 50mWestJet
Thu 9/1010:00 a.m.DUB - YYZ
1 stop12h 10mWestJet
Deal found 30/6C$ 538
Mon 15/95:20 p.m.YYZ - DUB
Nonstop6h 35mAer Lingus
Sat 27/91:15 p.m.DUB - YYZ
Nonstop7h 35mAer Lingus
Deal found 1/7C$ 542
Thu 2/1011:55 p.m.YYZ - DUB
Nonstop6h 35mMultiple Airlines
Tue 7/1010:10 a.m.DUB - YYZ
1 stop12h 00mMultiple Airlines
Deal found 30/6C$ 566
Sun 28/94:20 p.m.YTZ - DUB
2 stops10h 25mAir Canada
Tue 7/109:20 a.m.DUB - YTZ
1 stop10h 25mAir Canada
Deal found 30/6C$ 613
Thu 9/1010:20 a.m.YTZ - DUB
2 stops15h 50mMultiple Airlines
Mon 13/1010:40 a.m.DUB - YTZ
2 stops15h 54mMultiple Airlines
Deal found 1/7C$ 664
Wed 8/1010:00 p.m.YYZ - SNN
1 stop13h 10mAmerican Airlines
Wed 15/109:15 p.m.SNN - YYZ
1 stop23h 45mAmerican Airlines
Deal found 30/6C$ 675
Wed 8/105:20 p.m.YYZ - SNN
2 stops13h 00mAer Lingus
Wed 15/109:15 p.m.SNN - YYZ
2 stops23h 35mAer Lingus
Deal found 30/6C$ 745
Sat 27/910:15 p.m.YYZ - SNN
1 stop9h 25mMultiple Airlines
Sat 4/107:30 p.m.SNN - YYZ
2 stops23h 40mMultiple Airlines
Deal found 30/6C$ 762
Mon 29/98:40 p.m.YUL - DUB
Nonstop6h 05mLufthansa
Tue 7/109:20 a.m.DUB - YUL
Nonstop6h 30mLufthansa
Deal found 1/7C$ 782
Wed 17/98:40 p.m.YUL - DUB
Nonstop6h 05mAir Canada
Thu 2/109:50 a.m.DUB - YUL
1 stop11h 30mAir Canada
Deal found 2/7C$ 793

Cheapflights Fare Finder

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 629,999 searches. Data last updated 2 July 2025.
Use the filters below to find and compare flights from Ontario to Ireland that are best for you.

Fly from

Ontario

Fly to

Ireland

Route

Depart

Return

Price

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Mon 15/9

5:20 p.m.-4:55 a.m.

Nonstop6h 35m

Dublin

Wed 24/9

1:15 p.m.-3:50 p.m.

Nonstop7h 35m

C$ 529

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Thu 2/10

11:55 p.m.-11:30 a.m.

Nonstop6h 35m

Dublin

Sat 11/10

1:15 p.m.-3:50 p.m.

Nonstop7h 35m

C$ 530

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Fri 3/10

11:55 p.m.-11:30 a.m.

Nonstop6h 35m

Dublin

Sat 18/10

1:15 p.m.-3:50 p.m.

Nonstop7h 35m

C$ 534

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Fri 3/10

10:10 p.m.-10:00 a.m.

Nonstop6h 50m

Dublin

Thu 9/10

10:00 a.m.-5:10 p.m.

1 stop12h 10m

C$ 538

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Thu 2/10

11:55 p.m.-11:30 a.m.

Nonstop6h 35m

Dublin

Tue 7/10

10:10 a.m.-5:10 p.m.

1 stop12h 00m

C$ 566

TorontoDublin

YTZ - DUB

YTZDUB

Toronto Island

Sun 28/9

4:20 p.m.-7:45 a.m.

2 stops10h 25m

Dublin

Tue 7/10

9:20 a.m.-2:45 p.m.

1 stop10h 25m

C$ 613

TorontoDublin

YTZ - DUB

YTZDUB

Toronto Island

Thu 9/10

10:20 a.m.-7:10 a.m.

2 stops15h 50m

Dublin

Mon 13/10

10:40 a.m.-9:34 p.m.

2 stops15h 54m

C$ 664

TorontoShannon

YYZ - SNN

YYZSNN

Toronto Pearson Intl

Wed 8/10

10:00 p.m.-4:10 p.m.

1 stop13h 10m

Shannon

Wed 15/10

9:15 p.m.-4:00 p.m.

1 stop23h 45m

C$ 675

TorontoShannon

YYZ - SNN

YYZSNN

Toronto Pearson Intl

Wed 8/10

5:20 p.m.-11:20 a.m.

2 stops13h 00m

Shannon

Wed 15/10

9:15 p.m.-3:50 p.m.

2 stops23h 35m

C$ 745

TorontoShannon

YYZ - SNN

YYZSNN

Toronto Pearson Intl

Sat 27/9

10:15 p.m.-12:40 p.m.

1 stop9h 25m

Shannon

Sat 4/10

7:30 p.m.-2:10 p.m.

2 stops23h 40m

C$ 762

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/6

Showing 1-10 of 60 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Ireland

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Ireland (average of C$ 458). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 760). 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 ON 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 2 July 2025.

When flying from Region of Ontario to Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to Ireland

Explore weekly flight availability from Ontario to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 2 July 2025.

The most flights from CAON to IE0 are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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 2 July 2025.
See what other customers who have flown with Delta,Porter Airlines, andKLM 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
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Porter Airlines
8.0
Very good
298 reviews
Delta
8.0
Very good
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Air Transat
7.8
Good
407 reviews
Delta
8.0
Very good
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,983 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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 are the cheapest airlines to fly from Region of Ontario to Ireland one-way?

    The cheapest airlines for a one-way flight from Region of Ontario to Ireland are TAP AIR PORTUGAL (C$ 318), WestJet (C$ 319), and Porter Airlines (C$ 341).

  • 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 Region of Ontario to Ireland?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Ireland (average of C$ 458). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 760). 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 Ontario to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Ontario to Ireland

Discover the top 10 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 629,999 searches. Data last updated 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapestC$ 321AverageC$ 487FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
Air CanadaCheapestC$ 419AverageC$ 997FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Aer LingusCheapestC$ 420AverageC$ 767FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
WestJetCheapestC$ 423AverageC$ 758FlexibilityNo cancel feeOn-time60%
Search WestJet flights
LufthansaCheapestC$ 433AverageC$ 963FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapestC$ 494AverageC$ 909FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 523AverageC$ 767FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 528AverageC$ 761FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
IcelandairCheapestC$ 574AverageC$ 734FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapestC$ 691AverageC$ 1,217FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Ireland?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ireland from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Ireland?

Cheapflights helps you find that perfect flight to Ireland from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to Ireland with no change fees?

Need flexible booking options for your flight to Ireland from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Ireland become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ireland from Ontario today and book when prices fit your budget.

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