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Cheap flights from Ontario to Dublin from €315

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 28/2. 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
05:15 - 06:10ONT-DUB
40h 55m2 stops
United Airlines Logo
08:00 - 20:50DUB-ONT
43h 50m2 stops
€548United Airlines
Find Deal
Sat, 7 Mar - Wed, 18 Mar
United Airlines Logo
23:59 - 08:10ONT-DUB
24h 11m1 stop
United Airlines Logo
08:00 - 12:18DUB-ONT
35h 18m2 stops
€548United Airlines
Find Deal
Sat, 7 Mar - Wed, 18 Mar
British Airways Logo
15:09 - 15:20ONT-DUB
16h 11m2 stops
British Airways Logo
20:40 - 18:45DUB-ONT
30h 05m2 stops
€557British Airways
Find Deal
Mon, 12 Jan - Mon, 19 Jan
United Airlines Logo
06:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
08:00 - 22:25DUB-ONT
21h 25m2 stops
€566United Airlines
Find Deal
Wed, 11 Mar - Wed, 25 Mar
Air Canada Logo
05:05 - 07:10ONT-DUB
18h 05m2 stops
Air Canada Logo
09:00 - 20:58DUB-ONT
19h 58m2 stops
€568Air Canada
Find Deal
Sun, 7 Dec - Wed, 14 Jan
Delta Logo
22:20 - 07:45ONT-DUB
25h 25m1 stop
Delta Logo
05:55 - 17:15DUB-ONT
18h 20m2 stops
€569Delta
Find Deal
Sat, 7 Mar - Tue, 17 Mar
Iberia Logo
11:01 - 09:45ONT-DUB
14h 44m1 stop
Iberia Logo
13:45 - 23:40DUB-ONT
17h 55m1 stop
€570Iberia
Find Deal
Wed, 15 Apr - Wed, 29 Apr
Delta Logo
22:20 - 07:45ONT-DUB
25h 25m1 stop
Delta Logo
09:45 - 21:14DUB-ONT
18h 29m1 stop
€571Delta
Find Deal
Sat, 7 Mar - Tue, 17 Mar
United Airlines Logo
05:15 - 06:10ONT-DUB
17h 55m2 stops
United Airlines Logo
10:40 - 22:25DUB-ONT
18h 45m1 stop
€572United Airlines
Find Deal
Sun, 8 Mar - Tue, 17 Mar
United Airlines Logo
08:00 - 07:30ONT-DUB
15h 30m2 stops
United Airlines Logo
09:00 - 22:57DUB-ONT
45h 57m2 stops
€574United Airlines
Find Deal
Wed, 11 Feb - Sun, 15 Feb

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
7 Mar
ONT05:15Ontario
40h 55m
2 stops
DUB06:10Dublin
18 Mar
DUB08:00Dublin
43h 50m
2 stops
ONT20:50Ontario
€548
Find similar
United Airlines
7 Mar
ONT23:59Ontario
24h 11m
1 stop
DUB08:10Dublin
18 Mar
DUB08:00Dublin
35h 18m
2 stops
ONT12:18Ontario
€548
Find similar
United Airlines
11 Mar
ONT06:00Ontario
18h 30m
2 stops
DUB07:30Dublin
25 Mar
DUB08:00Dublin
21h 25m
2 stops
ONT22:25Ontario
€566
Find similar

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
12 Jan
ONT15:09Ontario
16h 11m
2 stops
DUB15:20Dublin
19 Jan
DUB20:40Dublin
30h 05m
2 stops
ONT18:45Ontario
€557
Find similar
British Airways
1 Jan
ONT16:47Ontario
16h 38m
2 stops
DUB17:25Dublin
12 Jan
DUB20:40Dublin
30h 05m
2 stops
ONT18:45Ontario
€586
Find similar
British Airways
14 Feb
ONT16:59Ontario
16h 41m
2 stops
DUB17:40Dublin
21 Feb
DUB10:55Dublin
19h 56m
2 stops
ONT22:51Ontario
€614
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 22 November 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

Sat 7/3

05:15-06:10

2 stops40h 55m

Dublin

Wed 18/3

08:00-20:50

2 stops43h 50m

€548

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 7/3

23:59-08:10

1 stop24h 11m

Dublin

Wed 18/3

08:00-12:18

2 stops35h 18m

€548

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 12/1

15:09-15:20

2 stops16h 11m

Dublin

Mon 19/1

20:40-18:45

2 stops30h 05m

€557

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/3

06:00-07:30

2 stops18h 30m

Dublin

Wed 25/3

08:00-22:25

2 stops21h 25m

€566

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 7/12

05:05-07:10

2 stops18h 05m

Dublin

Wed 14/1

09:00-20:58

2 stops19h 58m

€568

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 7/3

22:20-07:45

1 stop25h 25m

Dublin

Tue 17/3

05:55-17:15

2 stops18h 20m

€569

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 15/4

11:01-09:45

1 stop14h 44m

Dublin

Wed 29/4

13:45-23:40

1 stop17h 55m

€570

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 7/3

22:20-07:45

1 stop25h 25m

Dublin

Tue 17/3

09:45-21:14

1 stop18h 29m

€571

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/3

05:15-06:10

2 stops17h 55m

Dublin

Tue 17/3

10:40-22:25

1 stop18h 45m

€572

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/2

08:00-07:30

2 stops15h 30m

Dublin

Sun 15/2

09:00-22:57

2 stops45h 57m

€574

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 typical price of a round-trip flight between Ontario and Dublin?

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 €534.

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 €428. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €590. 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 €357. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €524 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 14h 44m 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
Enniscorthy
Kildare
Bray
Mullingar
Naas
Arklow
Carlingford
Maynooth
Leixlip
Drogheda
Gorey
Malahide
Castleknock

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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