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Cheap flights from Ontario to Dublin from €371

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 18/8. 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
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.
Air Canada Logo
13:44 - 07:45
ONT
-
DUB
34h 01m
2 stops
Air Canada Logo
09:50 - 12:12
DUB
-
ONT
34h 22m
2 stops
€579Air Canada
vie., 21 ago. - mié., 2 sep.
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:50 - 18:19
DUB
-
ONT
40h 29m
2 stops
€581United Airlines
mar., 18 ago. - mar., 1 sep.
United Airlines Logo
07:00 - 07:30
ONT
-
DUB
16h 30m
2 stops
United Airlines Logo
09:50 - 20:52
DUB
-
ONT
43h 02m
2 stops
€585United Airlines
mar., 18 ago. - mar., 1 sep.
Air Canada Logo
06:00 - 07:45
ONT
-
DUB
17h 45m
2 stops
Air Canada Logo
09:50 - 22:59
DUB
-
ONT
45h 09m
2 stops
€593Air Canada
mar., 5 may. - vie., 15 may.
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:20 - 18:01
DUB
-
ONT
40h 41m
2 stops
€600United Airlines
mar., 5 may. - vie., 15 may.
Multiple Airlines Logo
08:00 - 07:45
ONT
-
DUB
15h 45m
2 stops
Multiple Airlines Logo
09:50 - 18:11
DUB
-
ONT
16h 21m
2 stops
€601Multiple Airlines
mié., 12 ago. - mié., 19 ago.
KLM Logo
07:00 - 08:45
ONT
-
DUB
17h 45m
1 stop
KLM Logo
11:10 - 22:40
DUB
-
ONT
19h 30m
2 stops
€605KLM
vie., 21 ago. - mié., 2 sep.
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
€606United Airlines
mié., 29 abr. - mar., 5 may.
Air Canada Logo
13:50 - 07:45
ONT
-
DUB
33h 55m
2 stops
Air Canada Logo
09:50 - 22:37
DUB
-
ONT
44h 47m
2 stops
€608Air Canada
jue., 21 may. - dom., 31 may.
KLM Logo
07:00 - 08:45
ONT
-
DUB
17h 45m
1 stop
KLM Logo
11:00 - 21:56
DUB
-
ONT
18h 56m
1 stop
€609KLM
vie., 21 ago. - mié., 2 sep.

Air Canada flights from Ontario to Dublin

Our best Air Canada deals on Ontario to Dublin flight tickets
Air Canada
21 Aug
ONT13:44Ontario
34h 01m
2 stops
DUB07:45Dublin
2 Sept
DUB09:50Dublin
34h 22m
2 stops
ONT12:12Ontario
€579
Air Canada
5 May
ONT06:00Ontario
17h 45m
2 stops
DUB07:45Dublin
15 May
DUB09:50Dublin
45h 09m
2 stops
ONT22:59Ontario
€593
Air Canada
21 May
ONT13:50Ontario
33h 55m
2 stops
DUB07:45Dublin
31 May
DUB09:50Dublin
44h 47m
2 stops
ONT22:37Ontario
€608

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
40h 29m
2 stops
ONT18:19Ontario
€581
United Airlines
18 Aug
ONT07:00Ontario
16h 30m
2 stops
DUB07:30Dublin
1 Sept
DUB09:50Dublin
43h 02m
2 stops
ONT20:52Ontario
€585
United Airlines
5 May
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
15 May
DUB09:20Dublin
40h 41m
2 stops
ONT18:01Ontario
€600

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 12 marzo 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

vie. 21/8

13:44-07:45

2 stops34h 01m

Dublin

mié. 2/9

09:50-12:12

2 stops34h 22m

€579

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mar. 18/8

07:00-09:45

1 stop18h 45m

Dublin

mar. 1/9

09:50-18:19

2 stops40h 29m

€581

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mar. 18/8

07:00-07:30

2 stops16h 30m

Dublin

mar. 1/9

09:50-20:52

2 stops43h 02m

€585

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mar. 5/5

06:00-07:45

2 stops17h 45m

Dublin

vie. 15/5

09:50-22:59

2 stops45h 09m

€593

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mar. 5/5

07:00-09:45

1 stop18h 45m

Dublin

vie. 15/5

09:20-18:01

2 stops40h 41m

€600
Fastest return journey

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mié. 12/8

08:00-07:45

2 stops15h 45m

Dublin

mié. 19/8

09:50-18:11

2 stops16h 21m

€601

OntarioDublin

ONT - DUB

ONTDUB

Ontario

vie. 21/8

07:00-08:45

1 stop17h 45m

Dublin

mié. 2/9

11:10-22:40

2 stops19h 30m

€605

OntarioDublin

ONT - DUB

ONTDUB

Ontario

mié. 29/4

07:00-09:45

1 stop18h 45m

Dublin

mar. 5/5

09:50-22:35

2 stops44h 45m

€606

OntarioDublin

ONT - DUB

ONTDUB

Ontario

jue. 21/5

13:50-07:45

2 stops33h 55m

Dublin

dom. 31/5

09:50-22:37

2 stops44h 47m

€608

OntarioDublin

ONT - DUB

ONTDUB

Ontario

vie. 21/8

07:00-08:45

1 stop17h 45m

Dublin

mié. 2/9

11:00-21:56

1 stop18h 56m

€609

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 €426. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €586. 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
Cavan
Wicklow
Dundalk
Naas
Tullamore
Kildare
Swords
Bray
Gorey
Mullingar
Leixlip
Malahide
Maynooth
Carlingford
Enniscorthy
Arklow
Castleknock
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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1 adult
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