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Cheap flights from Ontario to Dublin from €308

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 Dublin departing on 1/3. 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
0 bags
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Find the cheapest flights from Ontario to Dublin

Cheap return flights

KLM Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
KLM Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€387KLM
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Mon, 20 Oct - Wed, 5 Nov
Delta Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
Delta Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€406Delta
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Mon, 20 Oct - Wed, 5 Nov
United Airlines Logo
07:00 - 08:10ONT-DUB
17h 10m1 stop
United Airlines Logo
09:00 - 22:31DUB-ONT
21h 31m2 stops
€407United Airlines
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Mon, 10 Nov - Wed, 19 Nov
United Airlines Logo
07:00 - 08:10ONT-DUB
17h 10m1 stop
United Airlines Logo
10:40 - 22:31DUB-ONT
19h 51m1 stop
€412United Airlines
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Sun, 9 Nov - Wed, 19 Nov
Logo
07:00 - 07:10ONT-DUB
16h 10m2 stops
Logo
09:00 - 22:31DUB-ONT
21h 31m2 stops
€413
Find Deal
Tue, 11 Nov - Wed, 19 Nov
American Airlines Logo
12:48 - 12:35ONT-DUB
16h 47m2 stops
American Airlines Logo
12:55 - 11:36DUB-ONT
30h 41m1 stop
€446American Airlines
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Mon, 27 Oct - Mon, 3 Nov
Logo
07:00 - 07:10ONT-DUB
16h 10m2 stops
Logo
09:00 - 18:36DUB-ONT
17h 36m2 stops
€456
Find Deal
Tue, 11 Nov - Mon, 17 Nov
American Airlines Logo
12:48 - 12:35ONT-DUB
16h 47m2 stops
American Airlines Logo
10:45 - 21:59DUB-ONT
19h 14m2 stops
€493American Airlines
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Mon, 27 Oct - Mon, 3 Nov
Air Canada Logo
05:05 - 08:15ONT-DUB
19h 10m2 stops
Air Canada Logo
09:20 - 22:52DUB-ONT
21h 32m2 stops
€521Air Canada
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Thu, 16 Oct - Wed, 22 Oct
Air Canada Logo
05:05 - 08:15ONT-DUB
19h 10m2 stops
Air Canada Logo
09:20 - 22:52DUB-ONT
21h 32m2 stops
€521Air Canada
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Thu, 16 Oct - Wed, 22 Oct

Delta flights from Ontario to Dublin

Our best Delta deals on Ontario to Dublin flight tickets
Delta
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€406
Find similar
Delta
15 Oct
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
22 Oct
DUB11:00Dublin
19h 22m
1 stop
ONT22:22Ontario
€488
Find similar
Delta
15 Feb
ONT13:00Ontario
19h 20m
2 stops
DUB16:20Dublin
1 Mar
DUB09:45Dublin
19h 29m
1 stop
ONT21:14Ontario
€527
Find similar

American Airlines flights from Ontario to Dublin

Our best American Airlines deals on Ontario to Dublin flight tickets
American Airlines
27 Oct
ONT12:48Ontario
16h 47m
2 stops
DUB12:35Dublin
3 Nov
DUB12:55Dublin
30h 41m
1 stop
ONT11:36Ontario
€446
Find similar
American Airlines
27 Oct
ONT12:48Ontario
16h 47m
2 stops
DUB12:35Dublin
3 Nov
DUB10:45Dublin
19h 14m
2 stops
ONT21:59Ontario
€493
Find similar
American Airlines
4 Nov
ONT10:47Ontario
19h 33m
2 stops
DUB14:20Dublin
14 Nov
DUB12:55Dublin
17h 34m
1 stop
ONT22:29Ontario
€580
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ontario to Dublin 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 15 September 2025.
Use the filters below to find and compare flights from Ontario to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€387

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€406

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 10/11

07:00-08:10

1 stop17h 10m

Dublin

Wed 19/11

09:00-22:31

2 stops21h 31m

€407

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 9/11

07:00-08:10

1 stop17h 10m

Dublin

Wed 19/11

10:40-22:31

1 stop19h 51m

€412

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 11/11

07:00-07:10

2 stops16h 10m

Dublin

Wed 19/11

09:00-22:31

2 stops21h 31m

€413

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 27/10

12:48-12:35

2 stops16h 47m

Dublin

Mon 3/11

12:55-11:36

1 stop30h 41m

€446

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 11/11

07:00-07:10

2 stops16h 10m

Dublin

Mon 17/11

09:00-18:36

2 stops17h 36m

€456

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 27/10

12:48-12:35

2 stops16h 47m

Dublin

Mon 3/11

10:45-21:59

2 stops19h 14m

€493

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 16/10

05:05-08:15

2 stops19h 10m

Dublin

Wed 22/10

09:20-22:52

2 stops21h 32m

€521

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 16/10

05:05-08:15

2 stops19h 10m

Dublin

Wed 22/10

09:20-22:52

2 stops21h 32m

€521

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Dublin from

How to get the cheapest flight ticket from Ontario to Dublin

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 month to fly to Dublin?

If you aren’t able to travel during the month of December, then book flights to Dublin from Ontario during March instead. Flights to Dublin in March, while not as cheap as those in December, still average around €517.

What is the cheapest day to depart on your flight to Dublin?

Our data shows that Friday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €421. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around €882. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

What is the cheapest time of day to depart on your flight to Dublin?

Our data shows that the cheapest Ontario to Dublin flights are usually those with departure times at midday. Our users have found flights to Dublin at midday for as low as €351. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €515 on average. Flights to Dublin from Ontario in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

When to book flights from Ontario to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Dublin according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Ontario to Dublin (ONT to DUB) flight deals and tips

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

Direct flights

None
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
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  • How far is Ontario to Dublin by plane?

    The distance between Ontario and Dublin is about 8266.8 km. Typically, this will take 12h 50m by plane in normal conditions.

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

    Prices for flights from Ontario Airport to Dublin Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The required travel and health documents for your Dublin Airport 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 Dublin Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Kilkenny
Athlone
Wicklow
Cavan
Swords
Dundalk
Tullamore
Enniscorthy
Kildare
Naas
Mullingar
Bray
Maynooth
Arklow
Drogheda
Malahide
Carlingford
Portmarnock
Castleknock
Leixlip

Why use momondo?

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

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

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

All flight searches from Ontario to Dublin on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Dublin.

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

Yes momondo offers price alerts on flights to Dublin from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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