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Cheap flights from Ontario to Dublin from €343

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 16/5. 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.
British Airways Logo
16:45 - 16:35
ONT
-
DUB
15h 50m2 stops
British Airways Logo
19:45 - 18:42
DUB
-
ONT
30h 57m2 stops
€415British Airways
Wed, 4 Feb - Wed, 11 Feb
British Airways Logo
07:00 - 10:15
ONT
-
DUB
19h 15m2 stops
British Airways Logo
08:45 - 19:45
DUB
-
ONT
19h 00m2 stops
€417British Airways
Wed, 18 Feb - Wed, 25 Feb
British Airways Logo
06:00 - 11:15
ONT
-
DUB
21h 15m2 stops
British Airways Logo
19:45 - 17:22
DUB
-
ONT
29h 37m2 stops
€418British Airways
Wed, 21 Jan - Wed, 28 Jan
British Airways Logo
14:08 - 14:50
ONT
-
DUB
16h 42m2 stops
British Airways Logo
13:30 - 23:46
DUB
-
ONT
18h 16m2 stops
€421British Airways
Wed, 8 Apr - Wed, 15 Apr
British Airways Logo
16:45 - 17:00
ONT
-
DUB
16h 15m2 stops
British Airways Logo
07:35 - 22:48
DUB
-
ONT
23h 13m2 stops
€422British Airways
Wed, 28 Jan - Tue, 3 Feb
American Airlines Logo
14:08 - 14:50
ONT
-
DUB
16h 42m2 stops
American Airlines Logo
09:30 - 20:54
DUB
-
ONT
19h 24m1 stop
€428American Airlines
Wed, 22 Apr - Tue, 28 Apr
Multiple Airlines Logo
10:59 - 14:35
ONT
-
DUB
19h 36m2 stops
Multiple Airlines Logo
09:30 - 22:35
DUB
-
ONT
21h 05m1 stop
€429Multiple Airlines
Tue, 21 Apr - Wed, 29 Apr
British Airways Logo
14:39 - 19:40
ONT
-
DUB
21h 01m2 stops
British Airways Logo
20:40 - 18:42
DUB
-
ONT
29h 02m2 stops
€432British Airways
Mon, 2 Mar - Mon, 9 Mar
Delta Logo
06:00 - 08:45
ONT
-
DUB
18h 45m2 stops
Delta Logo
13:25 - 16:15
DUB
-
ONT
34h 50m2 stops
€434Delta
Wed, 28 Jan - Wed, 4 Feb
Delta Logo
22:20 - 07:45
ONT
-
DUB
25h 25m1 stop
Delta Logo
05:55 - 21:04
DUB
-
ONT
22h 09m2 stops
€435Delta
Tue, 3 Mar - Tue, 10 Mar

American Airlines flights from Ontario to Dublin

Our best American Airlines deals on Ontario to Dublin flight tickets
American Airlines
22 Apr
ONT14:08Ontario
16h 42m
2 stops
DUB14:50Dublin
28 Apr
DUB09:30Dublin
19h 24m
1 stop
ONT20:54Ontario
€428
Find similar
American Airlines
5 May
ONT10:59Ontario
16h 16m
2 stops
DUB11:15Dublin
15 May
DUB11:45Dublin
17h 21m
1 stop
ONT21:06Ontario
€517
Find similar
American Airlines
5 May
ONT14:08Ontario
16h 42m
2 stops
DUB14:50Dublin
15 May
DUB13:25Dublin
17h 10m
2 stops
ONT22:35Ontario
€520
Find similar

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
3 Mar
ONT05:00Ontario
21h 20m
3 stops
DUB10:20Dublin
10 Mar
DUB12:05Dublin
17h 20m
2 stops
ONT22:25Ontario
€504
Find similar
United Airlines
30 Apr
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
12 May
DUB11:35Dublin
18h 51m
1 stop
ONT22:26Ontario
€512
Find similar
United Airlines
17 Apr
ONT06:00Ontario
17h 20m
2 stops
DUB07:20Dublin
24 Apr
DUB11:35Dublin
18h 51m
1 stop
ONT22:26Ontario
€516
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 7 January 2026.
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 4/2

16:45-16:35

2 stops15h 50m

Dublin

Wed 11/2

19:45-18:42

2 stops30h 57m

€415

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/2

07:00-10:15

2 stops19h 15m

Dublin

Wed 25/2

08:45-19:45

2 stops19h 00m

€417

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 21/1

06:00-11:15

2 stops21h 15m

Dublin

Wed 28/1

19:45-17:22

2 stops29h 37m

€418

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 8/4

14:08-14:50

2 stops16h 42m

Dublin

Wed 15/4

13:30-23:46

2 stops18h 16m

€421

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 28/1

16:45-17:00

2 stops16h 15m

Dublin

Tue 3/2

07:35-22:48

2 stops23h 13m

€422

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 22/4

14:08-14:50

2 stops16h 42m

Dublin

Tue 28/4

09:30-20:54

1 stop19h 24m

€428

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 21/4

10:59-14:35

2 stops19h 36m

Dublin

Wed 29/4

09:30-22:35

1 stop21h 05m

€429

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 2/3

14:39-19:40

2 stops21h 01m

Dublin

Mon 9/3

20:40-18:42

2 stops29h 02m

€432

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 28/1

06:00-08:45

2 stops18h 45m

Dublin

Wed 4/2

13:25-16:15

2 stops34h 50m

€434

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/3

22:20-07:45

1 stop25h 25m

Dublin

Tue 10/3

05:55-21:04

2 stops22h 09m

€435

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 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 €422. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €580. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

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

16h 16m

Direct flights

None
The fastest flight from Ontario to Dublin takes 16h 16m
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
Search flight deals

  • How far is Ontario to Dublin by plane?

    The distance between Ontario and Dublin is about 8266.8 km. Typically, this will take 16h 16m 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
Naas
Kildare
Enniscorthy
Bray
Mullingar
Carlingford
Gorey
Malahide
Maynooth
Leixlip
Arklow
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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