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Cheap flights from Ontario to Dublin from €348

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 4/5. 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.
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:20 - 22:30
DUB
-
ONT
45h 10m
2 stops
€412United Airlines
Sun, 3 May - Wed, 13 May
United Airlines Logo
05:10 - 07:30
ONT
-
DUB
18h 20m
2 stops
United Airlines Logo
09:50 - 12:14
DUB
-
ONT
34h 24m
2 stops
€416United Airlines
Mon, 30 Mar - Tue, 7 Apr
British Airways Logo
10:58 - 13:35
ONT
-
DUB
18h 37m
2 stops
British Airways Logo
08:45 - 21:24
DUB
-
ONT
20h 39m
2 stops
€417British Airways
Tue, 3 Feb - Thu, 12 Feb
British Airways Logo
15:09 - 16:35
ONT
-
DUB
17h 26m
2 stops
British Airways Logo
19:45 - 18:42
DUB
-
ONT
30h 57m
2 stops
€418British Airways
Wed, 11 Feb - Wed, 18 Feb
British Airways Logo
07:00 - 11:15
ONT
-
DUB
21h 15m
2 stops
British Airways Logo
08:40 - 22:30
DUB
-
ONT
21h 50m
2 stops
€420British Airways
Wed, 25 Mar - Thu, 2 Apr
British Airways Logo
14:39 - 15:40
ONT
-
DUB
17h 01m
2 stops
British Airways Logo
06:40 - 18:42
DUB
-
ONT
19h 02m
2 stops
€426British Airways
Mon, 2 Mar - Tue, 10 Mar
Multiple Airlines Logo
14:08 - 18:00
ONT
-
DUB
19h 52m
2 stops
Multiple Airlines Logo
09:30 - 23:46
DUB
-
ONT
22h 16m
1 stop
€428Multiple Airlines
Wed, 8 Apr - Wed, 15 Apr
Multiple Airlines Logo
10:56 - 17:00
ONT
-
DUB
22h 04m
2 stops
Multiple Airlines Logo
10:20 - 22:49
DUB
-
ONT
20h 29m
2 stops
€431Multiple Airlines
Wed, 18 Feb - Wed, 25 Feb
United Airlines Logo
08:00 - 08:10
ONT
-
DUB
16h 10m
2 stops
United Airlines Logo
09:00 - 20:50
DUB
-
ONT
19h 50m
2 stops
€432United Airlines
Tue, 10 Feb - Wed, 18 Feb
Multiple Airlines Logo
14:08 - 18:00
ONT
-
DUB
19h 52m
2 stops
Multiple Airlines Logo
06:20 - 23:46
DUB
-
ONT
25h 26m
2 stops
€433Multiple Airlines
Wed, 8 Apr - Wed, 15 Apr

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
3 Feb
ONT10:58Ontario
18h 37m
2 stops
DUB13:35Dublin
12 Feb
DUB08:45Dublin
20h 39m
2 stops
ONT21:24Ontario
€417
British Airways
11 Feb
ONT15:09Ontario
17h 26m
2 stops
DUB16:35Dublin
18 Feb
DUB19:45Dublin
30h 57m
2 stops
ONT18:42Ontario
€418
British Airways
25 Mar
ONT07:00Ontario
21h 15m
2 stops
DUB11:15Dublin
2 Apr
DUB08:40Dublin
21h 50m
2 stops
ONT22:30Ontario
€420

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
3 May
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
13 May
DUB09:20Dublin
45h 10m
2 stops
ONT22:30Ontario
€412
United Airlines
30 Mar
ONT05:10Ontario
18h 20m
2 stops
DUB07:30Dublin
7 Apr
DUB09:50Dublin
34h 24m
2 stops
ONT12:14Ontario
€416
United Airlines
10 Feb
ONT08:00Ontario
16h 10m
2 stops
DUB08:10Dublin
18 Feb
DUB09:00Dublin
19h 50m
2 stops
ONT20:50Ontario
€432

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 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

Sun 3/5

07:00-09:45

1 stop18h 45m

Dublin

Wed 13/5

09:20-22:30

2 stops45h 10m

€412

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 30/3

05:10-07:30

2 stops18h 20m

Dublin

Tue 7/4

09:50-12:14

2 stops34h 24m

€416

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/2

10:58-13:35

2 stops18h 37m

Dublin

Thu 12/2

08:45-21:24

2 stops20h 39m

€417

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/2

15:09-16:35

2 stops17h 26m

Dublin

Wed 18/2

19:45-18:42

2 stops30h 57m

€418

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 25/3

07:00-11:15

2 stops21h 15m

Dublin

Thu 2/4

08:40-22:30

2 stops21h 50m

€420

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 2/3

14:39-15:40

2 stops17h 01m

Dublin

Tue 10/3

06:40-18:42

2 stops19h 02m

€426

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 8/4

14:08-18:00

2 stops19h 52m

Dublin

Wed 15/4

09:30-23:46

1 stop22h 16m

€428

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/2

10:56-17:00

2 stops22h 04m

Dublin

Wed 25/2

10:20-22:49

2 stops20h 29m

€431

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 10/2

08:00-08:10

2 stops16h 10m

Dublin

Wed 18/2

09:00-20:50

2 stops19h 50m

€432

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 8/4

14:08-18:00

2 stops19h 52m

Dublin

Wed 15/4

06:20-23:46

2 stops25h 26m

€433

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

15h 50m

Direct flights

None
The fastest flight from Ontario to Dublin takes 15h 50m
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 15h 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
Naas
Tullamore
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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