Find flights
Deals
When to book
FAQs

Cheap flights from Ontario to Ireland from C$ 289

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DUB
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Ireland

Enter your travel dates to find the best prices.

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 1 May 2026.

Tue 15/912:40 p.m.
YYZ
-
DUB
1 stop14h 35m
Aer Lingus
Tue 13/104:10 p.m.
DUB
-
YYZ
1 stop12h 31m
Aer Lingus
Deal found 30/4C$ 505
Wed 16/92:05 p.m.
YYZ
-
DUB
1 stop13h 10m
Aer Lingus
Wed 30/91:15 p.m.
DUB
-
YYZ
1 stop13h 20m
Aer Lingus
Deal found 29/4C$ 506
Mon 17/82:55 p.m.
YTZ
-
DUB
1 stop13h 00m
Aer Lingus
Mon 24/812:35 p.m.
DUB
-
YTZ
1 stop11h 07m
Aer Lingus
Deal found 29/4C$ 506
Wed 20/52:15 p.m.
YYZ
-
DUB
1 stop13h 10m
Aer Lingus
Tue 26/512:45 p.m.
DUB
-
YYZ
1 stop12h 58m
Aer Lingus
Deal found 30/4C$ 507
Thu 25/612:15 p.m.
YTZ
-
DUB
1 stop11h 55m
Aer Lingus
Fri 17/712:35 p.m.
DUB
-
YTZ
1 stop11h 07m
Aer Lingus
Deal found 30/4C$ 507
Fri 8/56:20 p.m.
YYZ
-
DUB
1 stop11h 15m
Aer Lingus
Sun 7/64:10 p.m.
DUB
-
YYZ
1 stop12h 48m
Aer Lingus
Deal found 30/4C$ 509
Fri 5/64:15 p.m.
YYZ
-
DUB
1 stop11h 10m
Aer Lingus
Thu 11/64:10 p.m.
DUB
-
YYZ
1 stop12h 48m
Aer Lingus
Deal found 27/4C$ 510
Thu 11/64:17 p.m.
YYZ
-
DUB
1 stop10h 58m
Aer Lingus
Mon 15/64:10 p.m.
DUB
-
YYZ
1 stop12h 35m
Aer Lingus
Deal found 28/4C$ 512
Thu 7/57:15 a.m.
YYZ
-
DUB
1 stop16h 15m
Aer Lingus
Thu 14/511:35 a.m.
DUB
-
YYZ
1 stop16h 54m
Aer Lingus
Deal found 27/4C$ 513
Mon 15/610:55 p.m.
YYZ
-
DUB
Nonstop6h 50m
WestJet
Tue 23/610:10 a.m.
DUB
-
YYZ
1 stop12h 00m
WestJet
Deal found 27/4C$ 514
Sun 28/68:05 a.m.
YYZ
-
DUB
1 stop15h 30m
Aer Lingus
Mon 6/711:35 a.m.
DUB
-
YYZ
1 stop11h 55m
Aer Lingus
Deal found 29/4C$ 516
Sat 9/56:20 p.m.
YYZ
-
DUB
1 stop11h 15m
Aer Lingus
Sat 16/511:35 a.m.
DUB
-
YYZ
1 stop16h 54m
Aer Lingus
Deal found 27/4C$ 517

Find flight deals from Ontario to Ireland

Keep the following information in mind while searching for Ontario to Ireland flight deals. Data was last updated 1 May 2026.

Round-trip from

C$ 505

One-way from

C$ 289

Popular in

December

Cheapest in

October

Average price

C$ 713

Good round-trip deal

C$ 736 or less

Good one-way deal

C$ 457 or less
Aer Lingus
  • Aer Lingus
  • 15/9-13/10
  • 2 total stops
  • 27h 06m total
  • Ontario to Ireland
Search Deals
WestJet
  • WestJet
  • 9/6
  • 1 total stop
  • 9h 05m total
  • Ontario to Ireland
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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.
Search Deals

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 1 May 2026.
Use the filters below to find and compare flights from Ontario to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoDublin

YTZ - DUB

YTZDUB

Toronto Island

Wed 27/5

12:30 p.m.-7:45 a.m.

1 stop14h 15m

Dublin

Tue 2/6

9:50 a.m.-2:22 p.m.

1 stop9h 32m

C$ 701

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

4:40 p.m.-8:25 a.m.

1 stop10h 45m

Dublin

Thu 4/6

1:20 p.m.-7:37 a.m.

1 stop23h 17m

C$ 708

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Sat 6/6

8:45 p.m.-11:05 a.m.

1 stop9h 20m

Dublin

Thu 11/6

2:15 p.m.-10:05 p.m.

1 stop12h 50m

C$ 727
Quickest round-trip

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Mon 14/9

8:35 p.m.-11:30 a.m.

1 stop9h 55m

Dublin

Wed 23/9

1:15 p.m.-7:20 p.m.

1 stop11h 05m

C$ 733

OttawaDublin

YOW - DUB

YOWDUB

Ottawa

Wed 16/9

6:55 a.m.-8:20 a.m.

2 stops20h 25m

Dublin

Tue 22/9

10:40 a.m.-5:35 p.m.

1 stop11h 55m

C$ 748

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

8:35 p.m.-11:30 a.m.

1 stop9h 55m

Dublin

Thu 24/9

1:15 p.m.-7:20 p.m.

1 stop11h 05m

C$ 748

TorontoDublin

YTZ - DUB

YTZDUB

Toronto Island

Sun 14/6

7:25 a.m.-7:20 a.m.

2 stops18h 55m

Dublin

Mon 22/6

9:30 a.m.-4:41 p.m.

2 stops36h 11m

C$ 749

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Sun 6/9

8:35 p.m.-11:30 a.m.

1 stop9h 55m

Dublin

Thu 17/9

1:15 p.m.-7:20 p.m.

1 stop11h 05m

C$ 749

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

8:35 p.m.-11:30 a.m.

1 stop9h 55m

Dublin

Thu 17/9

1:15 p.m.-7:20 p.m.

1 stop11h 05m

C$ 749

TorontoDublin

YTZ - DUB

YTZDUB

Toronto Island

Thu 4/6

2:55 p.m.-11:10 a.m.

2 stops15h 15m

Dublin

Wed 17/6

12:30 p.m.-6:42 p.m.

1 stop11h 12m

C$ 750

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

How far ahead should I book a flight from Region of Ontario to Ireland?

The price you pay for your flight from Region of Ontario to Ireland may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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$ 476). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 1,870). 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 1 May 2026.

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 1 May 2026.

The most flights from CAON to IE0 are scheduled on a Tuesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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.

  • How long is the flight from Region of Ontario to Ireland?

    Departing from Region of Ontario to Ireland will take you 10h 45m. There are 4768 km between Region of Ontario and Ireland. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 Air Transat (C$ 214), WestJet (C$ 216), and Porter Airlines (C$ 225).

  • 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$ 476). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 1,870). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Charles de Gaulle flights
Pearson Intl to Heathrow flights
Pearson Intl to Gatwick flights
Pearson Intl to Leonardo da Vinci/Fiumicino flights
Vancouver Intl to Heathrow flights
Pearson Intl to Istanbul flights
Pearson Intl to Charles de Gaulle flights
Pearson Intl to Dublin flights
Pierre Elliott Trudeau Intl to Leonardo da Vinci/Fiumicino flights
Pierre Elliott Trudeau Intl to Lisbon flights
Pierre Elliott Trudeau Intl to Orly flights
Pierre Elliott Trudeau Intl to Athens flights
Pearson Intl to Lisbon flights
Pearson Intl to London City flights
Vancouver Intl to Charles de Gaulle flights
Pearson Intl to Athens flights
Pearson Intl to Stansted flights
Vancouver Intl to Gatwick flights
Toronto Island to Heathrow flights
Pearson Intl to Amsterdam flights
Pearson Intl to Barcelona-El Prat flights
Pearson Intl to Luton flights
Pierre Elliott Trudeau Intl to Istanbul flights
Pierre Elliott Trudeau Intl to Heathrow flights
Pearson Intl to Madrid flights
Pearson Intl to Orly flights
Pierre Elliott Trudeau Intl to Beauvais-Tille flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Québec City to Charles de Gaulle flights
Toronto Island to Gatwick flights
Pierre Elliott Trudeau Intl to Bruxelles-National flights
Vancouver Intl to Amsterdam flights
Vancouver Intl to Frankfurt flights
Vancouver Intl to Istanbul flights
Toronto Island to Charles de Gaulle flights
Vancouver Intl to London City flights
Vancouver Intl to Stansted flights
Vancouver Intl to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Frederic Chopin flights
Pearson Intl to Vicenza flights
Toronto Island to Leonardo da Vinci/Fiumicino flights
Vancouver Intl to Orly flights
Pierre Elliott Trudeau Intl to Marseille flights
Pearson Intl to Sabiha Gokcen flights
Calgary to Heathrow flights
Pierre Elliott Trudeau Intl to Frankfurt flights
Vancouver Intl to Dublin flights
Pearson Intl to Edinburgh flights
Pierre Elliott Trudeau Intl to Malpensa flights
Pierre Elliott Trudeau Intl to Amsterdam flights

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 1 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 393AverageC$ 735FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 413AverageC$ 697FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Aer LingusCheapestC$ 507AverageC$ 846FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapestC$ 508AverageC$ 597FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air TransatCheapestC$ 541AverageC$ 780FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapestC$ 581AverageC$ 694FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapestC$ 597AverageC$ 918FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapestC$ 600AverageC$ 921FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapestC$ 661AverageC$ 815FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapestC$ 670AverageC$ 772FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.