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Cheap flights from Ontario to Ireland from C$ 303

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DUB
14 Mar — 21 Mar1
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 12 February 2026.

Wed 19/86:45 a.m.
YUL
-
DUB
1 stop23h 45m
Porter Airlines
Mon 7/91:15 p.m.
DUB
-
YUL
1 stop11h 17m
Porter Airlines
Deal found 10/2C$ 527
Mon 1/68:35 p.m.
YUL
-
DUB
1 stop9h 55m
Air Transat
Tue 30/61:15 p.m.
DUB
-
YUL
1 stop12h 15m
Air Transat
Deal found 11/2C$ 530
Mon 1/63:10 p.m.
YUL
-
DUB
1 stop15h 20m
Air Transat
Thu 11/61:15 p.m.
DUB
-
YUL
1 stop25h 47m
Air Transat
Deal found 9/2C$ 532
Mon 1/611:00 a.m.
YUL
-
DUB
1 stop19h 30m
Air Transat
Wed 10/61:15 p.m.
DUB
-
YUL
1 stop16h 22m
Air Transat
Deal found 9/2C$ 534
Sun 31/53:10 p.m.
YUL
-
DUB
1 stop15h 20m
Air Transat
Thu 11/61:15 p.m.
DUB
-
YUL
1 stop32h 47m
Air Transat
Deal found 11/2C$ 535
Thu 4/65:10 p.m.
YUL
-
DUB
1 stop13h 20m
Air Transat
Tue 16/61:15 p.m.
DUB
-
YUL
1 stop11h 17m
Air Transat
Deal found 10/2C$ 537
Sun 31/53:10 p.m.
YUL
-
DUB
1 stop15h 20m
Air Transat
Wed 1/71:15 p.m.
DUB
-
YUL
1 stop11h 17m
Air Transat
Deal found 11/2C$ 538
Mon 21/95:10 p.m.
YUL
-
DUB
1 stop13h 20m
Air Transat
Mon 28/91:15 p.m.
DUB
-
YUL
1 stop11h 17m
Air Transat
Deal found 11/2C$ 539
Wed 1/78:35 p.m.
YUL
-
DUB
1 stop9h 55m
Air Transat
Thu 16/71:15 p.m.
DUB
-
YUL
1 stop11h 05m
Air Transat
Deal found 9/2C$ 541
Mon 1/65:10 p.m.
YUL
-
DUB
1 stop13h 20m
Air Transat
Tue 16/61:15 p.m.
DUB
-
YUL
1 stop12h 15m
Air Transat
Deal found 10/2C$ 543
Sun 31/56:45 a.m.
YUL
-
DUB
1 stop23h 45m
Air Transat
Sun 7/61:15 p.m.
DUB
-
YUL
1 stop25h 47m
Air Transat
Deal found 9/2C$ 545
Mon 3/85:10 p.m.
YUL
-
DUB
1 stop13h 20m
Air Transat
Tue 1/91:15 p.m.
DUB
-
YUL
1 stop12h 15m
Air Transat
Deal found 10/2C$ 547

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 12 February 2026.

Round-trip from

C$ 530

One-way from

C$ 303

Popular in

December

Cheapest in

January

Average price

C$ 705

Good round-trip deal

C$ 640 or less

Good one-way deal

C$ 358 or less
Air Transat
  • Air Transat
  • 1/6-30/6
  • 2 total stops
  • 22h 10m total
  • Ontario to Ireland
Search Deals
WestJet
  • WestJet
  • 28/4
  • 1 total stop
  • 9h 05m total
  • Ontario to Ireland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 12 February 2026.
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

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Thu 6/8

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

1 stop9h 55m

Dublin

Wed 2/9

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

1 stop11h 05m

C$ 547

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Tue 5/5

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

1 stop9h 55m

Dublin

Fri 3/7

1:15 p.m.-8:30 p.m.

1 stop12h 15m

C$ 547

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Thu 6/8

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

1 stop9h 55m

Dublin

Thu 3/9

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

1 stop11h 05m

C$ 547

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Mon 3/8

5:10 p.m.-11:30 a.m.

1 stop13h 20m

Dublin

Wed 2/9

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

1 stop11h 05m

C$ 547

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Tue 2/6

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

1 stop9h 55m

Dublin

Sun 28/6

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

1 stop11h 05m

C$ 550

MontrealDublin

YUL - DUB

YULDUB

Montreal Pierre Elliott Trudeau Intl

Thu 4/6

5:10 p.m.-11:30 a.m.

1 stop13h 20m

Dublin

Sun 14/6

1:15 p.m.-7:32 p.m.

1 stop11h 17m

C$ 550

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Fri 3/4

11:10 p.m.-11:05 a.m.

1 stop30h 55m

Dublin

Thu 9/4

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

1 stop12h 50m

C$ 576

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Wed 6/5

11:10 p.m.-1:15 p.m.

1 stop9h 05m

Dublin

Fri 12/6

12:15 p.m.-7:10 p.m.

1 stop11h 55m

C$ 577

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Mon 18/5

11:10 p.m.-11:05 a.m.

1 stop30h 55m

Dublin

Sat 13/6

2:15 p.m.-7:10 p.m.

1 stop9h 55m

C$ 581

TorontoDublin

YYZ - DUB

YYZDUB

Toronto Pearson Intl

Tue 7/4

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

1 stop9h 20m

Dublin

Sun 19/4

12:15 p.m.-7:10 p.m.

1 stop11h 55m

C$ 597

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/2

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, April is the cheapest month in which you can book a flight from Region of Ontario to Ireland (average of C$ 383). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 599). 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 12 February 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 12 February 2026.

The most flights from CAON to IE0 are scheduled on a Tuesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 9h 55m. 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$ 213), WestJet (C$ 215), and Porter Airlines (C$ 224).

  • 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, April is the cheapest month in which you can book a flight from Region of Ontario to Ireland (average of C$ 383). Flying from Region of Ontario to Ireland in December is currently the most expensive (average of C$ 599). 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.
Pearson Intl to Heathrow flights
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Pierre Elliott Trudeau Intl to Beauvais-Tille flights
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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 12 February 2026.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapestC$ 383AverageC$ 459FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
Porter AirlinesCheapestC$ 391AverageC$ 712FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 407AverageC$ 679FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IcelandairCheapestC$ 504AverageC$ 616FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air TransatCheapestC$ 515AverageC$ 746FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Aer LingusCheapestC$ 538AverageC$ 863FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapestC$ 577AverageC$ 689FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapestC$ 591AverageC$ 841FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapestC$ 595AverageC$ 922FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapestC$ 657AverageC$ 776FlexibilityNo cancel feeOn-time70%
Search British Airways 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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