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Cheap flights from Ireland to Ontario from C$ 294

DUB — YYZ
19 Oct — 26 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Ontario

Sun 20/910:40 a.m. -
Nonstop7h 40m
Sat 3/1011:55 p.m. -
Nonstop6h 35m
Deal found 16/9C$ 547
Fri 11/1211:30 a.m. -
1 stop11h 45m
Mon 14/127:40 p.m. -
1 stop9h 35m
Deal found 17/9C$ 584
Sat 12/1211:30 a.m. -
1 stop11h 45m
Mon 21/127:15 p.m. -
1 stop10h 00m
Deal found 14/9C$ 595
Mon 23/1111:30 a.m. -
1 stop11h 45m
Sat 28/117:40 p.m. -
1 stop9h 35m
Deal found 16/9C$ 596
Sun 20/910:40 a.m. -
Nonstop7h 40m
Tue 29/911:55 p.m. -
Nonstop6h 35m
Deal found 16/9C$ 616
Mon 16/1111:30 a.m. -
1 stop11h 45m
Sat 28/117:40 p.m. -
1 stop9h 35m
Deal found 16/9C$ 617
Tue 1/1211:30 a.m. -
1 stop11h 45m
Tue 8/127:40 p.m. -
1 stop9h 35m
Deal found 15/9C$ 624
Thu 5/1111:45 a.m. -
1 stop13h 00m
Wed 11/117:45 p.m. -
Nonstop6h 25m
Deal found 18/9C$ 635
Thu 5/1111:30 a.m. -
1 stop11h 45m
Wed 11/117:40 p.m. -
1 stop9h 35m
Deal found 19/9C$ 638
Thu 19/117:55 p.m. -
1 stop28h 45m
Fri 27/119:40 p.m. -
1 stop29h 50m
Deal found 17/9C$ 669
Thu 5/115:40 a.m. -
1 stop15h 00m
Sat 14/1110:20 p.m. -
1 stop11h 25m
Deal found 19/9C$ 708
Thu 5/115:40 a.m. -
1 stop15h 00m
Thu 12/116:30 p.m. -
1 stop15h 15m
Deal found 14/9C$ 715

Find flight deals from Ireland to Ontario

Round-trip from

C$ 584

One-way from

C$ 294

Popular in

December

Cheapest in

February

Average price

C$ 719

Good round-trip deal

C$ 755 or less

Good one-way deal

C$ 465 or less
Icelandair
  • Icelandair
  • 11/12-14/12
  • 2 total stops
  • 21h 20m total
  • Ireland to Ontario
Search Deals
Aer Lingus
  • Aer Lingus
  • 24/9-31/12
  • Nonstop
  • 7h 30m total
  • Ireland to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 42 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Ireland to Ontario.
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Price to beat on a one-way flight from Ireland to Ontario.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinMontreal

DUB Dublin - YUL Montreal Pierre Elliott Trudeau Intl

DUBYUL

Dublin

Sun 29/11

9:10 a.m.-7:40 p.m.

1 stop15h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 425

DublinOttawa

DUB Dublin - YOW Ottawa

DUBYOW

Dublin

Thu 22/10

4:20 p.m.-12:40 p.m.

1 stop25h 20m

Ottawa

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 497

DublinOttawa

DUB Dublin - YOW Ottawa

DUBYOW

Dublin

Sat 3/10

5:25 p.m.-12:40 p.m.

1 stop24h 15m

Ottawa

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 498

DublinOttawa

DUB Dublin - YOW Ottawa

DUBYOW

Dublin

Sun 4/10

6:45 a.m.-5:35 p.m.

2 stops15h 50m

Ottawa

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 501

DublinMontreal

DUB Dublin - YUL Montreal Pierre Elliott Trudeau Intl

DUBYUL

Dublin

Sun 4/10

6:45 a.m.-2:15 p.m.

1 stop12h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 501

DublinOttawa

DUB Dublin - YOW Ottawa

DUBYOW

Dublin

Wed 21/10

6:50 a.m.-8:00 p.m.

2 stops18h 10m

Ottawa

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 507

DublinMontreal

DUB Dublin - YUL Montreal Pierre Elliott Trudeau Intl

DUBYUL

Dublin

Sun 15/11

9:10 a.m.-7:40 p.m.

1 stop15h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 507

DublinOttawa

DUB Dublin - YOW Ottawa

DUBYOW

Dublin

Tue 13/10

6:00 p.m.-8:00 p.m.

2 stops31h 00m

Ottawa

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 508

DublinMontreal

DUB Dublin - YUL Montreal Pierre Elliott Trudeau Intl

DUBYUL

Dublin

Sun 18/10

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

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 521

DublinMontreal

DUB Dublin - YUL Montreal Pierre Elliott Trudeau Intl

DUBYUL

Dublin

Wed 21/10

7:30 p.m.-4:35 p.m.

2 stops26h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 526

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 60 resultsSorted by cheapest first
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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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Ireland to Region of Ontario (average of C$ 661). Flying from Ireland to Region of Ontario in December is currently the most expensive (average of C$ 998). 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 IE to ON?

When flying from Ireland to Region of Ontario, 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 Ireland to Region of Ontario

The most flights from IE0 to CAON are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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

To ensure you get the cheapest price possible for a flight from Ireland to Region of Ontario, you should look to book at least 23 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Ontario

Check out reviews from past customers who have flown with Aer Lingus,WestJet, andAir Canada from Ireland to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Aer Lingus
7.3
Good
1,768 reviews
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
WestJet
7.2
Good
3,446 reviews
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Air Canada
7.1
Good
11,652 reviews
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
American Airlines
7.0
Good
12,087 reviews
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Lufthansa
6.8
Okay
8,236 reviews
Aer Lingus
7.3
Good
1,768 reviews
Check prices

Overall

7.3

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Related info for your journey

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

    A quick flight from Ireland to Region of Ontario can take about 11h 45m. Icelandair provides one of the quickest options available for as low as C$ 669. There are 5258 km between Ireland and Region of Ontario. 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 Ireland to Region of Ontario one-way?

    C$ 224 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Aer Lingus, with prices starting from C$ 327 and C$ 496, respectively.

  • 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 Region of Ontario?

    Currently, February is the cheapest month in which you can book a flight from Ireland to Region of Ontario (average of C$ 661). Flying from Ireland to Region of Ontario in December is currently the most expensive (average of C$ 998). 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

Top 5 airlines flying from Ireland to Ontario

AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 566AverageC$ 785FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Aer LingusCheapestC$ 626AverageC$ 871FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapestC$ 710AverageC$ 922FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 719AverageC$ 1,714FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapestC$ 761AverageC$ 998FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Ireland to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Ireland.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ireland to Ontario flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Ireland to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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