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Cheap flights from Ontario to Dublin from €371

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 28/1. 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

Enter your travel dates to find the best prices.
United Airlines Logo
05:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
09:50 - 22:26DUB-ONT
44h 36m2 stops
€434United Airlines
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Wed, 6 May - Wed, 13 May
British Airways Logo
16:45 - 19:40ONT-DUB
18h 55m2 stops
British Airways Logo
10:55 - 22:49DUB-ONT
19h 54m2 stops
€438British Airways
Find Deal
Tue, 3 Feb - Tue, 24 Feb
United Airlines Logo
08:00 - 07:30ONT-DUB
15h 30m2 stops
United Airlines Logo
08:00 - 22:25DUB-ONT
21h 25m2 stops
€450United Airlines
Find Deal
Wed, 4 Mar - Wed, 11 Mar
United Airlines Logo
06:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
09:50 - 22:11DUB-ONT
20h 21m2 stops
€453United Airlines
Find Deal
Tue, 24 Mar - Tue, 7 Apr
Iberia Logo
12:55 - 09:45ONT-DUB
12h 50m1 stop
Iberia Logo
13:45 - 21:56DUB-ONT
16h 11m1 stop
€454Iberia
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Wed, 15 Apr - Wed, 22 Apr
United Airlines Logo
06:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
11:35 - 23:06DUB-ONT
19h 31m2 stops
€458United Airlines
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Wed, 18 Mar - Wed, 1 Apr
United Airlines Logo
05:05 - 07:30ONT-DUB
18h 25m2 stops
United Airlines Logo
09:00 - 22:00DUB-ONT
45h 00m2 stops
€473United Airlines
Find Deal
Wed, 11 Feb - Sun, 15 Feb
Multiple Airlines Logo
10:57 - 12:10ONT-DUB
18h 13m2 stops
Multiple Airlines Logo
12:40 - 21:56DUB-ONT
17h 16m1 stop
€479Multiple Airlines
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Tue, 24 Mar - Tue, 7 Apr
British Airways Logo
10:58 - 12:15ONT-DUB
17h 17m2 stops
British Airways Logo
20:40 - 17:22DUB-ONT
28h 42m2 stops
€481British Airways
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Wed, 21 Jan - Sat, 31 Jan
United Airlines Logo
06:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
12:05 - 22:25DUB-ONT
17h 20m2 stops
€487United Airlines
Find Deal
Wed, 11 Mar - Tue, 17 Mar

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
3 Feb
ONT16:45Ontario
18h 55m
2 stops
DUB19:40Dublin
24 Feb
DUB10:55Dublin
19h 54m
2 stops
ONT22:49Ontario
€438
Find similar
British Airways
21 Jan
ONT10:58Ontario
17h 17m
2 stops
DUB12:15Dublin
31 Jan
DUB20:40Dublin
28h 42m
2 stops
ONT17:22Ontario
€481
Find similar
British Airways
11 Jan
ONT16:45Ontario
16h 05m
2 stops
DUB16:50Dublin
18 Jan
DUB10:45Dublin
20h 03m
2 stops
ONT22:48Ontario
€513
Find similar

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
6 May
ONT05:00Ontario
18h 30m
2 stops
DUB07:30Dublin
13 May
DUB09:50Dublin
44h 36m
2 stops
ONT22:26Ontario
€434
Find similar
United Airlines
4 Mar
ONT08:00Ontario
15h 30m
2 stops
DUB07:30Dublin
11 Mar
DUB08:00Dublin
21h 25m
2 stops
ONT22:25Ontario
€450
Find similar
United Airlines
24 Mar
ONT06:00Ontario
18h 30m
2 stops
DUB07:30Dublin
7 Apr
DUB09:50Dublin
20h 21m
2 stops
ONT22:11Ontario
€453
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 1 December 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

Wed 6/5

05:00-07:30

2 stops18h 30m

Dublin

Wed 13/5

09:50-22:26

2 stops44h 36m

€434

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/2

16:45-19:40

2 stops18h 55m

Dublin

Tue 24/2

10:55-22:49

2 stops19h 54m

€438

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 4/3

08:00-07:30

2 stops15h 30m

Dublin

Wed 11/3

08:00-22:25

2 stops21h 25m

€450

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 24/3

06:00-07:30

2 stops18h 30m

Dublin

Tue 7/4

09:50-22:11

2 stops20h 21m

€453

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 15/4

12:55-09:45

1 stop12h 50m

Dublin

Wed 22/4

13:45-21:56

1 stop16h 11m

€454

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/3

06:00-07:30

2 stops18h 30m

Dublin

Wed 1/4

11:35-23:06

2 stops19h 31m

€458

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/2

05:05-07:30

2 stops18h 25m

Dublin

Sun 15/2

09:00-22:00

2 stops45h 00m

€473

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 24/3

10:57-12:10

2 stops18h 13m

Dublin

Tue 7/4

12:40-21:56

1 stop17h 16m

€479

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 21/1

10:58-12:15

2 stops17h 17m

Dublin

Sat 31/1

20:40-17:22

2 stops28h 42m

€481

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/3

06:00-07:30

2 stops18h 30m

Dublin

Tue 17/3

12:05-22:25

2 stops17h 20m

€487

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 €530.

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 €425. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €586. 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 in the morning. Our users have found flights to Dublin in the morning for as low as €468. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €521 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

Fastest flight time

12h 20m

Direct flights

None
The fastest flight from Ontario to Dublin takes 12h 20m
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 23m 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
Swords
Cavan
Dundalk
Tullamore
Kildare
Enniscorthy
Bray
Naas
Mullingar
Carlingford
Arklow
Maynooth
Gorey
Leixlip
Malahide
Castleknock
Drogheda

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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