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Cheap flights from Ontario to Dublin from €364

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 31/7. 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
11:35 - 18:19
DUB
-
ONT
14h 44m
1 stop
€730United Airlines
Mon, 7 Sep - Thu, 17 Sep
United Airlines Logo
07:00 - 07:45
ONT
-
DUB
16h 45m
2 stops
United Airlines Logo
09:20 - 18:11
DUB
-
ONT
40h 51m
2 stops
€737United Airlines
Fri, 11 Sep - Fri, 18 Sep
American Airlines Logo
16:47 - 17:00
ONT
-
DUB
16h 13m
2 stops
American Airlines Logo
13:00 - 22:23
DUB
-
ONT
17h 23m
1 stop
€739American Airlines
Tue, 3 Nov - Tue, 10 Nov
American Airlines Logo
16:47 - 17:00
ONT
-
DUB
16h 13m
2 stops
American Airlines Logo
11:30 - 21:59
DUB
-
ONT
18h 29m
2 stops
€743American Airlines
Tue, 3 Nov - Tue, 10 Nov
Air Canada Logo
05:00 - 07:45
ONT
-
DUB
18h 45m
2 stops
Air Canada Logo
09:50 - 22:58
DUB
-
ONT
21h 08m
2 stops
€744Air Canada
Wed, 2 Sep - Wed, 9 Sep
KLM Logo
12:00 - 07:45
ONT
-
DUB
12h 45m
1 stop
KLM Logo
09:40 - 18:18
DUB
-
ONT
16h 38m
1 stop
€747KLM
Tue, 27 Oct - Tue, 10 Nov
United Airlines Logo
05:00 - 08:10
ONT
-
DUB
19h 10m
3 stops
United Airlines Logo
12:05 - 20:20
DUB
-
ONT
16h 15m
2 stops
€751United Airlines
Tue, 3 Nov - Tue, 10 Nov
JetBlue Logo
22:41 - 09:00
ONT
-
DUB
26h 19m
1 stop
JetBlue Logo
11:30 - 22:43
DUB
-
ONT
19h 13m
1 stop
€754JetBlue
Fri, 29 May - Wed, 17 Jun
United Airlines Logo
07:00 - 07:45
ONT
-
DUB
16h 45m
2 stops
United Airlines Logo
11:35 - 18:19
DUB
-
ONT
14h 44m
1 stop
€760United Airlines
Fri, 11 Sep - Fri, 18 Sep
United Airlines Logo
19:13 - 08:15
ONT
-
DUB
29h 02m
2 stops
United Airlines Logo
09:50 - 12:12
DUB
-
ONT
34h 22m
2 stops
€763United Airlines
Thu, 3 Sep - Thu, 10 Sep

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
7 Sept
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
17 Sept
DUB11:35Dublin
14h 44m
1 stop
ONT18:19Ontario
€730
United Airlines
11 Sept
ONT07:00Ontario
16h 45m
2 stops
DUB07:45Dublin
18 Sept
DUB09:20Dublin
40h 51m
2 stops
ONT18:11Ontario
€737
United Airlines
3 Nov
ONT05:00Ontario
19h 10m
3 stops
DUB08:10Dublin
10 Nov
DUB12:05Dublin
16h 15m
2 stops
ONT20:20Ontario
€751

JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
29 May
ONT22:41Ontario
26h 19m
1 stop
DUB09:00Dublin
17 Jun
DUB11:30Dublin
19h 13m
1 stop
ONT22:43Ontario
€754
JetBlue
17 Aug
ONT23:50Ontario
25h 10m
1 stop
DUB09:00Dublin
24 Aug
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€767
JetBlue
26 May
ONT22:41Ontario
26h 19m
1 stop
DUB09:00Dublin
9 Jun
DUB11:30Dublin
17h 17m
1 stop
ONT20:47Ontario
€771

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 14 May 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

Mon 7/9

07:00-09:45

1 stop18h 45m

Dublin

Thu 17/9

11:35-18:19

1 stop14h 44m

€730

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 11/9

07:00-07:45

2 stops16h 45m

Dublin

Fri 18/9

09:20-18:11

2 stops40h 51m

€737

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/11

16:47-17:00

2 stops16h 13m

Dublin

Tue 10/11

13:00-22:23

1 stop17h 23m

€739

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/11

16:47-17:00

2 stops16h 13m

Dublin

Tue 10/11

11:30-21:59

2 stops18h 29m

€743

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 2/9

05:00-07:45

2 stops18h 45m

Dublin

Wed 9/9

09:50-22:58

2 stops21h 08m

€744
Fastest return journey

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 27/10

12:00-07:45

1 stop12h 45m

Dublin

Tue 10/11

09:40-18:18

1 stop16h 38m

€747

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/11

05:00-08:10

3 stops19h 10m

Dublin

Tue 10/11

12:05-20:20

2 stops16h 15m

€751

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 29/5

22:41-09:00

1 stop26h 19m

Dublin

Wed 17/6

11:30-22:43

1 stop19h 13m

€754

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 11/9

07:00-07:45

2 stops16h 45m

Dublin

Fri 18/9

11:35-18:19

1 stop14h 44m

€760

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 3/9

19:13-08:15

2 stops29h 02m

Dublin

Thu 10/9

09:50-12:12

2 stops34h 22m

€763

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 €421. If your travel schedule is flexible, try to avoid departing on a Monday 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.
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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
Kildare
Tullamore
Gorey
Swords
Bray
Leixlip
Mullingar
Malahide
Maynooth
Castleknock
Carlingford
Enniscorthy
Arklow
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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