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Cheap flights from Ontario to Dublin from €432

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 25/8. 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 - 18:19
DUB
-
ONT
40h 59m
2 stops
€725United Airlines
Tue, 1 Sep - Tue, 8 Sep
Air Canada Logo
13:44 - 08:15
ONT
-
DUB
34h 31m
2 stops
Air Canada Logo
09:20 - 12:38
DUB
-
ONT
35h 18m
2 stops
€732Air Canada
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
07:00 - 08:15
ONT
-
DUB
17h 15m
2 stops
Multiple Airlines Logo
09:20 - 12:38
DUB
-
ONT
35h 18m
3 stops
€740Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
JetBlue Logo
23:50 - 09:00
ONT
-
DUB
25h 10m
1 stop
JetBlue Logo
11:30 - 20:13
DUB
-
ONT
16h 43m
1 stop
€743JetBlue
Mon, 7 Sep - Thu, 17 Sep
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:20 - 22:35
DUB
-
ONT
21h 15m
2 stops
€749United Airlines
Tue, 5 May - Wed, 13 May
Delta Logo
07:05 - 08:45
ONT
-
DUB
17h 40m
1 stop
Delta Logo
11:00 - 18:36
DUB
-
ONT
15h 36m
1 stop
€752Delta
Tue, 5 May - Wed, 13 May
United Airlines Logo
07:00 - 07:20
ONT
-
DUB
16h 20m
2 stops
United Airlines Logo
09:20 - 22:35
DUB
-
ONT
21h 15m
2 stops
€753United Airlines
Mon, 4 May - Wed, 13 May
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
12:30 - 22:35
DUB
-
ONT
18h 05m
2 stops
€756United Airlines
Tue, 5 May - Tue, 12 May
Delta Logo
22:15 - 09:15
ONT
-
DUB
27h 00m
2 stops
Delta Logo
11:00 - 18:36
DUB
-
ONT
15h 36m
1 stop
€757Delta
Mon, 4 May - Tue, 12 May
Air Canada Logo
05:00 - 07:45
ONT
-
DUB
18h 45m
2 stops
Air Canada Logo
09:50 - 20:36
DUB
-
ONT
42h 46m
2 stops
€758Air Canada
Fri, 8 May - Tue, 12 May

JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
7 Sept
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
17 Sept
DUB11:30Dublin
16h 43m
1 stop
ONT20:13Ontario
€743
JetBlue
18 Aug
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
1 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€772
JetBlue
18 Aug
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
1 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€781

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
5 May
ONT10:59Ontario
19h 36m
2 stops
DUB14:35Dublin
12 May
DUB08:35Dublin
22h 05m
2 stops
ONT22:40Ontario
€807
British Airways
7 Sept
ONT12:33Ontario
17h 57m
2 stops
DUB14:30Dublin
14 Sept
DUB08:30Dublin
20h 38m
2 stops
ONT21:08Ontario
€835
British Airways
6 May
ONT07:30Ontario
17h 30m
2 stops
DUB09:00Dublin
13 May
DUB12:30Dublin
19h 16m
2 stops
ONT23:46Ontario
€928

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 24 April 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

Cheapest return flight

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 1/9

07:00-09:45

1 stop18h 45m

Dublin

Tue 8/9

09:20-18:19

2 stops40h 59m

€725

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 1/9

13:44-08:15

2 stops34h 31m

Dublin

Tue 8/9

09:20-12:38

2 stops35h 18m

€732

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 1/9

07:00-08:15

2 stops17h 15m

Dublin

Tue 8/9

09:20-12:38

3 stops35h 18m

€740

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 7/9

23:50-09:00

1 stop25h 10m

Dublin

Thu 17/9

11:30-20:13

1 stop16h 43m

€743

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 5/5

07:00-09:45

1 stop18h 45m

Dublin

Wed 13/5

09:20-22:35

2 stops21h 15m

€749
Fastest return journey

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 5/5

07:05-08:45

1 stop17h 40m

Dublin

Wed 13/5

11:00-18:36

1 stop15h 36m

€752

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 4/5

07:00-07:20

2 stops16h 20m

Dublin

Wed 13/5

09:20-22:35

2 stops21h 15m

€753

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 5/5

07:00-09:45

1 stop18h 45m

Dublin

Tue 12/5

12:30-22:35

2 stops18h 05m

€756

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 4/5

22:15-09:15

2 stops27h 00m

Dublin

Tue 12/5

11:00-18:36

1 stop15h 36m

€757

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 8/5

05:00-07:45

2 stops18h 45m

Dublin

Tue 12/5

09:50-20:36

2 stops42h 46m

€758

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 Tuesday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €420. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around €576. 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

12h 45m

Direct flights

None
The fastest flight from Ontario to Dublin takes 12h 45m
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
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Frequently asked questions about flying from Ontario to Dublin

  • How far is Ontario to Dublin by plane?

    The distance between Ontario and Dublin is about 8266.8 km. Typically, this will take 12h 45m 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
Cavan
Wicklow
Dundalk
Naas
Tullamore
Kildare
Swords
Bray
Gorey
Leixlip
Mullingar
Malahide
Maynooth
Carlingford
Castleknock
Enniscorthy
Arklow
Thurles

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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