Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Ontario to Ireland from €306

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Ireland departing on 31/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€671JetBlue
Sun, 13 Sep - Tue, 29 Sep
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 21:00DUB  Dublin-ONT Ontario
17h 30m1 stop New York John F Kennedy Intl
€672JetBlue
Sat, 3 Oct - Tue, 6 Oct
JetBlue Logo
23:05 - 09:00ONT  Ontario-DUB Dublin
25h 55m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 22:09DUB  Dublin-ONT Ontario
18h 39m1 stop New York John F Kennedy Intl
€684JetBlue
Tue, 13 Oct - Mon, 19 Oct
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€697JetBlue
Thu, 10 Sep - Thu, 17 Sep
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 21:00DUB  Dublin-ONT Ontario
17h 30m1 stop New York John F Kennedy Intl
€698JetBlue
Wed, 23 Sep - Wed, 7 Oct
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 21:00DUB  Dublin-ONT Ontario
17h 30m1 stop New York John F Kennedy Intl
€701JetBlue
Wed, 23 Sep - Wed, 7 Oct
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€715JetBlue
Fri, 11 Sep - Wed, 16 Sep
United Airlines Logo
07:00 - 07:30ONT  Ontario-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 20:58SNN  Shannon-ONT Ontario
16h 28m2 stops Newark Denver Intl
€720United Airlines
Sun, 20 Sep - Tue, 6 Oct
Air Canada Logo
18:53 - 07:10ONT  Ontario-DUB Dublin
52h 17m2 stops San Francisco Toronto Pearson Intl
Air Canada Logo
09:00 - 12:20DUB  Dublin-ONT Ontario
35h 20m2 stops Toronto Pearson Intl San Francisco
€745Air Canada
Mon, 11 Jan - Fri, 26 Feb
United Airlines Logo
06:45 - 08:10ONT  Ontario-DUB Dublin
17h 25m1 stop Chicago O'Hare Intl
United Airlines Logo
09:00 - 20:20DUB  Dublin-ONT Ontario
19h 20m2 stops Toronto Pearson Intl Denver Intl
€753United Airlines
Tue, 8 Dec - Tue, 15 Dec

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Air Canada flights from Ontario to Ireland

Our best Air Canada deals on Ontario to Ireland flight tickets
Air Canada
11 Jan
ONT18:53Ontario
52h 17m
2 stops
DUB07:10Dublin
26 Feb
DUB09:00Dublin
35h 20m
2 stops
ONT12:20Ontario
€745
Air Canada
10 Sept
ONT05:00Ontario
18h 45m
2 stops
DUB07:45Dublin
17 Sept
DUB09:50Dublin
21h 01m
2 stops
ONT22:51Ontario
€792
Air Canada
23 Sept
ONT05:00Ontario
18h 45m
2 stops
DUB07:45Dublin
7 Oct
DUB09:50Dublin
45h 01m
2 stops
ONT22:51Ontario
€802

Air France flights from Ontario to Ireland

Our best Air France deals on Ontario to Ireland flight tickets
Air France
26 Oct
ONT12:18Ontario
12h 27m
1 stop
DUB07:45Dublin
4 Nov
DUB09:40Dublin
17h 50m
1 stop
ONT19:30Ontario
€756
Air France
30 Aug
ONT07:05Ontario
20h 05m
2 stops
SNN11:10Shannon
3 Sept
SNN13:05Shannon
35h 19m
2 stops
ONT16:24Ontario
€1,235

momondo Fare Finder

 
Customise 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, momondo users made 13,528 searches. Data last updated 17 August 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 return flight

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sun 13/9

22:39-09:00

1 stop26h 21m

Dublin

Tue 29/9

11:30-20:57

1 stop17h 27m

€671

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sat 3/10

22:39-09:00

1 stop26h 21m

Dublin

Tue 6/10

11:30-21:00

1 stop17h 30m

€672

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 13/10

23:05-09:00

1 stop25h 55m

Dublin

Mon 19/10

11:30-22:09

1 stop18h 39m

€684

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Thu 10/9

22:39-09:00

1 stop26h 21m

Dublin

Thu 17/9

11:30-20:57

1 stop17h 27m

€697

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

22:39-09:00

1 stop26h 21m

Dublin

Wed 7/10

11:30-21:00

1 stop17h 30m

€698

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

22:39-09:00

1 stop26h 21m

Dublin

Wed 7/10

11:30-21:00

1 stop17h 30m

€701

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Fri 11/9

22:39-09:00

1 stop26h 21m

Dublin

Wed 16/9

11:30-20:57

1 stop17h 27m

€715
Fastest return journey

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Sun 20/9

07:00-07:30

1 stop16h 30m

Shannon

Tue 6/10

12:30-20:58

2 stops16h 28m

€720

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/1

18:53-07:10

2 stops52h 17m

Dublin

Fri 26/2

09:00-12:20

2 stops35h 20m

€745

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 8/12

06:45-08:10

1 stop17h 25m

Dublin

Tue 15/12

09:00-20:20

2 stops19h 20m

€753

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ireland from

How to get the cheapest flight ticket from Ontario to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Ireland?

JetBlue and United Airlines are the most popular carriers operating from Ontario to Ireland

Cheap Ontario to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Ireland

Best price found

€306

Fastest flight time

15h 14m

Direct flights

None
The best one-way flight to Ireland from Ontario in the past 72 hours is €306. The best return flight deal from Ontario to Ireland found on momondo in the last 72 hours is €671.
The fastest flight from Ontario to Ireland takes 15h 14m
There are no direct flights from Ontario to Ireland. There are no popular flight routes from Ontario to Ireland.
Search flight deals

Frequently asked questions about flying from Ontario to Ireland

  • When did momondo last update prices for flights from Ontario Airport to Ireland?

    Prices for flights from Ontario Airport to Ireland refresh daily.

  • How old do you have to be to fly from Ontario Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Ireland?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Ireland. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Ireland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Ireland flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Ireland?

momondo provides multiple filters to help you find the best flight to Ireland from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Ireland right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 16/9
Wed 23/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €38
Flights to Corkfrom €77
Flights to Shannon, Clarefrom €83
Flights to Milltown (Kerry)from €40
Flights to Donegalfrom €75