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Cheap flights from Ontario to Dublin from €261

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 3/3. 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
09:50 - 22:26
DUB
-
ONT
44h 36m
2 stops
€535United Airlines
Tue, 14 Apr - Wed, 22 Apr
Air Canada Logo
06:00 - 08:15
ONT
-
DUB
18h 15m
2 stops
Air Canada Logo
09:50 - 12:20
DUB
-
ONT
34h 30m
2 stops
€543Air Canada
Tue, 14 Apr - Wed, 22 Apr
United Airlines Logo
23:59 - 08:10
ONT
-
DUB
25h 11m
1 stop
United Airlines Logo
11:35 - 22:26
DUB
-
ONT
18h 51m
1 stop
€551United Airlines
Mon, 23 Mar - Tue, 31 Mar
Air France Logo
22:25 - 07:45
ONT
-
DUB
26h 20m
1 stop
Air France Logo
11:00 - 21:00
DUB
-
ONT
18h 00m
1 stop
€555Air France
Mon, 16 Mar - Wed, 1 Apr
Air Canada Logo
05:10 - 08:15
ONT
-
DUB
19h 05m
2 stops
Air Canada Logo
09:50 - 20:36
DUB
-
ONT
18h 46m
2 stops
€557Air Canada
Mon, 30 Mar - Wed, 8 Apr
United Airlines Logo
05:15 - 07:30
ONT
-
DUB
19h 15m
2 stops
United Airlines Logo
10:40 - 22:18
DUB
-
ONT
18h 38m
1 stop
€557United Airlines
Mon, 9 Mar - Thu, 26 Mar
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
11:35 - 22:26
DUB
-
ONT
18h 51m
1 stop
€558United Airlines
Sun, 5 Apr - Tue, 14 Apr
United Airlines Logo
23:59 - 08:10
ONT
-
DUB
25h 11m
1 stop
United Airlines Logo
10:40 - 22:18
DUB
-
ONT
18h 38m
1 stop
€559United Airlines
Sun, 8 Mar - Thu, 26 Mar
Delta Logo
06:00 - 07:55
ONT
-
DUB
17h 55m
2 stops
Delta Logo
05:55 - 16:25
DUB
-
ONT
18h 30m
2 stops
€560Delta
Sun, 12 Apr - Tue, 28 Apr
United Airlines Logo
06:05 - 07:20
ONT
-
DUB
17h 15m
2 stops
United Airlines Logo
09:30 - 21:50
DUB
-
ONT
20h 20m
2 stops
€562United Airlines
Sun, 12 Apr - Fri, 24 Apr

JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
16 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
31 Aug
DUB11:40Dublin
19h 00m
1 stop
ONT22:40Ontario
€621
JetBlue
2 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
20 Aug
DUB11:40Dublin
19h 00m
1 stop
ONT22:40Ontario
€625
JetBlue
23 May
ONT23:25Ontario
25h 35m
1 stop
DUB09:00Dublin
3 Jun
DUB11:40Dublin
18h 29m
1 stop
ONT22:09Ontario
€639

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
14 Apr
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
22 Apr
DUB09:50Dublin
44h 36m
2 stops
ONT22:26Ontario
€535
United Airlines
23 Mar
ONT23:59Ontario
25h 11m
1 stop
DUB08:10Dublin
31 Mar
DUB11:35Dublin
18h 51m
1 stop
ONT22:26Ontario
€551
United Airlines
9 Mar
ONT05:15Ontario
19h 15m
2 stops
DUB07:30Dublin
26 Mar
DUB10:40Dublin
18h 38m
1 stop
ONT22:18Ontario
€557

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 19 February 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

Tue 14/4

07:00-09:45

1 stop18h 45m

Dublin

Wed 22/4

09:50-22:26

2 stops44h 36m

€535

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 14/4

06:00-08:15

2 stops18h 15m

Dublin

Wed 22/4

09:50-12:20

2 stops34h 30m

€543

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 23/3

23:59-08:10

1 stop25h 11m

Dublin

Tue 31/3

11:35-22:26

1 stop18h 51m

€551

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 16/3

22:25-07:45

1 stop26h 20m

Dublin

Wed 1/4

11:00-21:00

1 stop18h 00m

€555

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 30/3

05:10-08:15

2 stops19h 05m

Dublin

Wed 8/4

09:50-20:36

2 stops18h 46m

€556

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 9/3

05:15-07:30

2 stops19h 15m

Dublin

Thu 26/3

10:40-22:18

1 stop18h 38m

€557

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 5/4

07:00-09:45

1 stop18h 45m

Dublin

Tue 14/4

11:35-22:26

1 stop18h 51m

€558

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/3

23:59-08:10

1 stop25h 11m

Dublin

Thu 26/3

10:40-22:18

1 stop18h 38m

€559

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 12/4

06:00-07:55

2 stops17h 55m

Dublin

Tue 28/4

05:55-16:25

2 stops18h 30m

€560

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 12/4

06:05-07:20

2 stops17h 15m

Dublin

Fri 24/4

09:30-21:50

2 stops20h 20m

€562

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 €417. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €575. 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.
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 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
Wicklow
Cavan
Naas
Swords
Tullamore
Dundalk
Kildare
Bray
Mullingar
Enniscorthy
Maynooth
Gorey
Malahide
Carlingford
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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