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Cheap flights from Ontario to Dublin from €290

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 23/8. 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.
Delta Logo
07:00 - 07:45
ONT
-
DUB
16h 45m
1 stop
Delta Logo
05:45 - 16:12
DUB
-
ONT
18h 27m
2 stops
€619Delta
Thu, 5 Nov - Sat, 14 Nov
Air France Logo
12:00 - 07:45
ONT
-
DUB
12h 45m
1 stop
Air France Logo
09:40 - 18:18
DUB
-
ONT
16h 38m
1 stop
€622Air France
Wed, 28 Oct - Tue, 3 Nov
Air France Logo
12:00 - 07:45
ONT
-
DUB
12h 45m
1 stop
Air France Logo
09:40 - 18:18
DUB
-
ONT
16h 38m
1 stop
€623Air France
Wed, 28 Oct - Tue, 3 Nov
Delta Logo
07:05 - 08:45
ONT
-
DUB
17h 40m
1 stop
Delta Logo
05:55 - 19:53
DUB
-
ONT
21h 58m
2 stops
€623Delta
Tue, 18 Aug - Tue, 1 Sep
Delta Logo
07:05 - 08:45
ONT
-
DUB
17h 40m
1 stop
Delta Logo
11:00 - 19:53
DUB
-
ONT
16h 53m
1 stop
€626Delta
Tue, 18 Aug - Tue, 1 Sep
Delta Logo
09:43 - 07:55
ONT
-
DUB
14h 12m
2 stops
Delta Logo
05:55 - 16:24
DUB
-
ONT
18h 29m
2 stops
€627Delta
Tue, 18 Aug - Tue, 1 Sep
Multiple Airlines Logo
12:00 - 08:45
ONT
-
DUB
12h 45m
1 stop
Multiple Airlines Logo
09:40 - 18:18
DUB
-
ONT
15h 38m
1 stop
€649Multiple Airlines
Wed, 21 Oct - Tue, 27 Oct
Delta Logo
07:05 - 08:45
ONT
-
DUB
17h 40m
1 stop
Delta Logo
08:55 - 22:43
DUB
-
ONT
21h 48m
2 stops
€650Delta
Sat, 3 Oct - Sun, 11 Oct
Delta Logo
07:05 - 08:45
ONT
-
DUB
17h 40m
1 stop
Delta Logo
11:00 - 18:30
DUB
-
ONT
15h 30m
1 stop
€652Delta
Sun, 5 Jul - Sat, 22 Aug
Delta Logo
22:00 - 10:00
ONT
-
DUB
28h 00m
2 stops
Delta Logo
05:55 - 22:45
DUB
-
ONT
24h 50m
2 stops
€653Delta
Fri, 28 Aug - Sun, 6 Sep

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KLM flights from Ontario to Dublin

Our best KLM deals on Ontario to Dublin flight tickets
KLM
9 Aug
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
25 Aug
DUB11:00Dublin
16h 53m
1 stop
ONT19:53Ontario
€655
KLM
7 Jul
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
21 Jul
DUB11:00Dublin
15h 30m
1 stop
ONT18:30Ontario
€905

Delta flights from Ontario to Dublin

Our best Delta deals on Ontario to Dublin flight tickets
Delta
5 Nov
ONT07:00Ontario
16h 45m
1 stop
DUB07:45Dublin
14 Nov
DUB05:45Dublin
18h 27m
2 stops
ONT16:12Ontario
€619
Delta
18 Aug
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
1 Sept
DUB05:55Dublin
21h 58m
2 stops
ONT19:53Ontario
€623
Delta
18 Aug
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
1 Sept
DUB11:00Dublin
16h 53m
1 stop
ONT19:53Ontario
€626

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 25 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

Thu 5/11

07:00-07:45

1 stop16h 45m

Dublin

Sat 14/11

05:45-16:12

2 stops18h 27m

€619

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 28/10

12:00-07:45

1 stop12h 45m

Dublin

Tue 3/11

09:40-18:18

1 stop16h 38m

€622

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 28/10

12:00-07:45

1 stop12h 45m

Dublin

Tue 3/11

09:40-18:18

1 stop16h 38m

€623

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 18/8

07:05-08:45

1 stop17h 40m

Dublin

Tue 1/9

05:55-19:53

2 stops21h 58m

€623

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 18/8

07:05-08:45

1 stop17h 40m

Dublin

Tue 1/9

11:00-19:53

1 stop16h 53m

€626

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 18/8

09:43-07:55

2 stops14h 12m

Dublin

Tue 1/9

05:55-16:24

2 stops18h 29m

€627
Fastest return journey

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 21/10

12:00-08:45

1 stop12h 45m

Dublin

Tue 27/10

09:40-18:18

1 stop15h 38m

€649

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/10

07:05-08:45

1 stop17h 40m

Dublin

Sun 11/10

08:55-22:43

2 stops21h 48m

€650

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 5/7

07:05-08:45

1 stop17h 40m

Dublin

Sat 22/8

11:00-18:30

1 stop15h 30m

€652

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 28/8

22:00-10:00

2 stops28h 00m

Dublin

Sun 6/9

05:55-22:45

2 stops24h 50m

€653

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 €435. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around €684. 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
Swords
Bray
Gorey
Kildare
Tullamore
Leixlip
Mullingar
Maynooth
Castleknock
Carlingford
Enniscorthy
Malahide
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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