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Cheap flights from Ontario to Dublin from €313

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 23/9. 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
1 adult, Economy, 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.
Multiple Airlines Logo
12:00 - 08:45
ONT
-
DUB
12h 45m
1 stop
Multiple Airlines Logo
11:00 - 18:18
DUB
-
ONT
15h 18m
1 stop
€711Multiple Airlines
Wed, 14 Oct - Wed, 21 Oct
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:50 - 22:35
DUB
-
ONT
44h 45m
2 stops
€733United Airlines
Tue, 18 Aug - Tue, 1 Sep
United Airlines Logo
09:15 - 11:10
ONT
-
DUB
17h 55m
2 stops
United Airlines Logo
09:50 - 22:35
DUB
-
ONT
44h 45m
2 stops
€736United Airlines
Tue, 18 Aug - Tue, 1 Sep
United Airlines Logo
05:00 - 07:45
ONT
-
DUB
18h 45m
2 stops
United Airlines Logo
09:20 - 21:59
DUB
-
ONT
44h 39m
2 stops
€740United Airlines
Wed, 2 Sep - Wed, 9 Sep
American Airlines Logo
12:35 - 09:45
ONT
-
DUB
13h 10m
1 stop
American Airlines Logo
12:40 - 18:47
DUB
-
ONT
14h 07m
1 stop
€748American Airlines
Mon, 3 Aug - Wed, 19 Aug
JetBlue Logo
23:50 - 09:00
ONT
-
DUB
25h 10m
1 stop
JetBlue Logo
11:30 - 22:35
DUB
-
ONT
19h 05m
1 stop
€748JetBlue
Sun, 23 Aug - Tue, 8 Sep
American Airlines Logo
12:35 - 09:45
ONT
-
DUB
13h 10m
1 stop
American Airlines Logo
12:40 - 18:47
DUB
-
ONT
14h 07m
1 stop
€753American Airlines
Mon, 3 Aug - Wed, 19 Aug
American Airlines Logo
12:35 - 09:45
ONT
-
DUB
13h 10m
1 stop
American Airlines Logo
12:40 - 18:47
DUB
-
ONT
14h 07m
1 stop
€754American Airlines
Mon, 3 Aug - Wed, 19 Aug
United Airlines Logo
06:10 - 07:45
ONT
-
DUB
17h 35m
2 stops
United Airlines Logo
09:50 - 22:35
DUB
-
ONT
20h 45m
2 stops
€755United Airlines
Mon, 27 Jul - Thu, 20 Aug
KLM Logo
07:00 - 07:45
ONT
-
DUB
16h 45m
1 stop
KLM Logo
09:40 - 18:18
DUB
-
ONT
16h 38m
1 stop
€756KLM
Tue, 3 Nov - Tue, 10 Nov

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JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
23 Aug
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
8 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€748
JetBlue
4 Sept
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
8 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€758
JetBlue
23 Aug
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
1 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€774

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
18 Aug
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
1 Sept
DUB09:50Dublin
44h 45m
2 stops
ONT22:35Ontario
€733
United Airlines
18 Aug
ONT09:15Ontario
17h 55m
2 stops
DUB11:10Dublin
1 Sept
DUB09:50Dublin
44h 45m
2 stops
ONT22:35Ontario
€736
United Airlines
2 Sept
ONT05:00Ontario
18h 45m
2 stops
DUB07:45Dublin
9 Sept
DUB09:20Dublin
44h 39m
2 stops
ONT21:59Ontario
€740

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 13 June 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

Wed 14/10

12:00-08:45

1 stop12h 45m

Dublin

Wed 21/10

11:00-18:18

1 stop15h 18m

€711

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 18/8

07:00-09:45

1 stop18h 45m

Dublin

Tue 1/9

09:50-22:35

2 stops44h 45m

€733

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 18/8

09:15-11:10

2 stops17h 55m

Dublin

Tue 1/9

09:50-22:35

2 stops44h 45m

€736

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 2/9

05:00-07:45

2 stops18h 45m

Dublin

Wed 9/9

09:20-21:59

2 stops44h 39m

€740
Fastest return journey

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/8

12:35-09:45

1 stop13h 10m

Dublin

Wed 19/8

12:40-18:47

1 stop14h 07m

€748

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 23/8

23:50-09:00

1 stop25h 10m

Dublin

Tue 8/9

11:30-22:35

1 stop19h 05m

€748

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/8

12:35-09:45

1 stop13h 10m

Dublin

Wed 19/8

12:40-18:47

1 stop14h 07m

€753

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/8

12:35-09:45

1 stop13h 10m

Dublin

Wed 19/8

12:40-18:47

1 stop14h 07m

€754

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 27/7

06:10-07:45

2 stops17h 35m

Dublin

Thu 20/8

09:50-22:35

2 stops20h 45m

€755

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/11

07:00-07:45

1 stop16h 45m

Dublin

Tue 10/11

09:40-18:18

1 stop16h 38m

€756

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 €427. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around €582. 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 57m

Direct flights

None
The fastest flight from Ontario to Dublin takes 12h 57m
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 57m 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
Swords
Naas
Gorey
Bray
Tullamore
Kildare
Mullingar
Maynooth
Leixlip
Castleknock
Malahide
Carlingford
Enniscorthy
Drogheda
Portmarnock

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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